1. Ask a question: This is the first step of the scientific method, in which you must ask a question about a phenomenon or problem that needs to be solved.
2. Do background research: Before you can begin to answer your question, you must do some background research on the subject. This will help you develop a better understanding of the problem and possible solutions.
3. Construct a hypothesis: A hypothesis is an educated guess about the possible outcomes of the research. It is important to remember that the hypothesis is not a fact, but an educated guess.
4. Test your hypothesis: Once you have developed a hypothesis, you must test it to see if it is correct. This can be done through experiments or observations.
5. Analyze your data and draw conclusions: After you have completed your tests, you must analyze the data and draw conclusions from it. This will help you determine if your hypothesis was correct or not.
6. Report your results: Once you have completed your research and drawn conclusions, you must report your findings. This can be done through a written report or a presentation.
7. Formulate a theory: After you have reported your results, you can formulate a theory about the phenomenon or problem. This theory can be tested in the future to see if it is accurate.
What is phenomenon?
Phenomenon in chemistry is a term used to describe a unique and observable event or occurrence. It can refer to a physical or chemical process, the result of a reaction, or the behavior of a substance under certain conditions.
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explain why the dipole moment of NH3 (1.46D) is more than that of NF3 (0.24D)?
Ammonia has a dipole moment (1.47D) that is greater than NF 3's dipole moment (0.24D). For both molecules, the molecular geometry is pyramidal. Each molecule has one lone pair on the N atom. F is more electronegative than H, and the link between them is more polar.
Thus, it is anticipated that NF 3 will have a substantially greater dipole moment than NH 3. However, the contrary is true because, in the case of ammonia, the bond pair and lone pair dipole moments have the same direction, whereas, in the case of NF 3, they have the opposite direction.
Individual dipole moment vectors add in the ammonia molecule but cancel in the NF 3 molecule.
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__________ electrons are the most important electrons to an atom.
Responses
A InnerInner
B OuterOuter
Answer:
B
Explanation:
B. The outer outer electron (valence electrons)... It is more important to an atom's chemical properties.
Students were given three graduated cylinders containing three different liquids: oil, water and syrup. They were asked to predict what would happen when the three liquids were poured into one container. The majority of students said that the liquids would form a mixture. The liquids were poured into a jar and the results can be seen here. Explain what happened to the three liquids.
A The liquids formed three distinct layers because of different densities.The liquids formed three distinct layers because of different densities.
B The liquids formed three distinct layers because of varying masses.The liquids formed three distinct layers because of varying masses.
C The liquids formed three distinct layers because of different volumes.The liquids formed three distinct layers because of different volumes.
D Oil is lighter than water; water is lighter than syrup.Oil is lighter than water; water is lighter than syrup.
The students conducted a second experiment. They measured 100 ml of water, density 1 g/cm3
and 100 ml of mineral oil , density 0.8 g/cm3
. They poured the water into Cup A and the oil in to Cup B. Next they added an ice cube to each cube. All BUT ONE statement is a valid conclusion.
Responses
A If oil and water are combined in one cup, the oil will float on top of the water.If oil and water are combined in one cup, the oil will float on top of the water.
B Ice is more dense than mineral oil.Ice is more dense than mineral oil.
C Ice and liquid water have the same density but ice is buoyant in water.Ice and liquid water have the same density but ice is buoyant in water.
D Ice has a density less than 1 g/cm3
.
The liquids formed three distinct layers because of different densities.
Ice has a density less than 1 g/cm3
What is the nature of the liquids?We have to note that if the density of the liquids are not the same then the liquids would have to separate based on the density of each of the liquids. We have to also note that none of the liquids can be found to be miscible at all.
We know that the object that is less dense is the object that is going to float so the fact that ice was floating on the water means that the ice is less dense than water.
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Any substance that occupies space and has a mass is defined as?
A substance that has mass and occupies space is called matter. Matter is considered as a substance that has a mass in it.
It also occupies space or volume. The matter is considered to consist of various types of particles which have different sizes as well as mass in it. The matter has the capability of existing in several ways.
The major types of existence of matter are solid, liquid and gas in which the existence depends upon the temperature or the pressure that surrounds the particulate matter. The matter of its different types can combine with the other substance in order to perform various types of ingredients.
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Which one of the properties listed below represents a physical property?
Hints
A. The density of iron is 7.9 g/cm^3.
B. Gasoline burns in air to form carbon dioxide and water.
C. An acid neutralizes a base, forming a salt and water.
D. Iron, Fe, reacts with oxygen to form rust.
One of the attributes listed below that reflects a physical property is the density of iron, which is 7.9 g/cm3.
The correct answer is A
Simply put, what is density?The term "density" refers to the ratio between the volume (the amount of space taken up by an object or substance) and the amount of matter contained therein (its mass). The quantity of mass per volume unit is another method to define density.
What is density, for instance?The amount of matter a volume can hold is measured by its density. At the same size, a dense item weighs greater than a lesser dense one. On it, a substance with a density less than seawater will float whereas one with a higher density will sink. The concentration equation is D = M / V, or density equal mass per unit volume.
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This question is about electrolysis.
A student investigated the electrolysis of aqueous solutions using inert electrodes.
The figure below shows the apparatus used.
(a) The electrodes are made of graphite.
Which element is graphite a form of?
Tick (✓) one box.
Aluminium
Carbon
Copper
Power supply
Silicon
Electrodes
Aqueous solution
A student investigated the electrolysis of aqueous solutions using inert electrodes. The element graphite is a form of electrode. The correct option is C.
What is electrolysis?The process of separating water into hydrogen and oxygen is known as electrolysis. This reaction occurs in a device known as an electrolyzer.
Because of the structure of graphite, which makes it a great conductor, graphite rods are employed as electrodes in electrolysis. There are anodes and cathodes in the electrolysis process.
Therefore, the correct option is C. Electrodes.
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What is the Viscosity of Water?
At a level of 20 degrees Celsius, water has a viscosity of roughly 0.01 point or 10-3 Pa. (Pascal seconds). The resistance of the a liquid to deformation at the a specific rate is measured by its viscosity.
What is the water's viscosity rating?
0.010019 poise
The stiffness of water was measured at 0.010019 poise as opposed to the recognized norm of 0.01005 poise during the previous 30 years.
Is water one viscosity?
At the a temperature of twenty degrees Celsius, water has a viscosity of roughly 0.01 point or 10-3 Pa. (Pascal seconds). The resistance of the a fluid to distortion at the a specific rate is measured by its viscosity.
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3.where in an atom would you expect to find electrons? protons? neutrons?
Generally, atoms are made of extremely tiny particles called protons, neutrons, and electrons. Protons and neutrons are present in the center of the atom, making up the nucleus and electrons surround the nucleus.
An electron is defined as a negatively charged subatomic particle that can be either bound to an atom or free (not bound). An electron which is bound to an atom is one of the three primary types of particles within the atom, the other two are protons and neutrons.
A neutron is defined as a subatomic particle found in the nucleus of every atom except that of simple hydrogen. The name of neutron is derived from the fact that it has no electrical charge; it is neutral. Neutrons are basically extremely dense.
Proton is defined as a small, positively charged particle of matter found in the atoms of all elements. Streams of protons which are generated by special equipment can be used for radiation treatment.
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What is combustion reaction Class 10 examples?
Gasoline combustion in a car engine generates heat and light by reacting with oxygen, which propels the vehicle.
What is combustion?A fuel and an oxidizer undergo a chemical reaction known as combustion to create heat and light. The majority of these reactions are exothermic, which means that heat and light are released as forms of energy.
In class 10, some illustrations of combustion reactions are:
Burning wood or paper produces heat, light, and carbon dioxide when combined with oxygen.
Fossil fuels are burned in order to produce heat and light when combined with oxygen.
When used for cooking or heating, propane gas combines with oxygen to produce heat and light when burned in a stove.
Magnesium burns when combined with oxygen, creating a bright white flame that emits energy in the form of heat and light.
These are only a few real-world instances of combustion reactions. To be able to manage and prevent the negative impacts of fire, it is crucial to comprehend the fundamental concepts behind combustion processes.
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how many signals would you expect in the 1h nmr spectrum of the compound shown?
The two methyl groups are equal since they share the same binding and are symmetric to another. The 1H NMR spectrum contains a total of three chemical reaction signals.
What is the short definition of a chemical reaction?In a chemical reaction, one or more substances—also known as reactants—are changed into one or more additional substances—also known as products.
Why are methyl groups useful?The methyl group has two effects: it prevents transcription factors from binding, which in turn recruits RNA polymerase II, but it also permits the binding of a group of proteins that recognise the methylated DNA with particularity. These proteins then recruit histone deacetylases, which modify the histones connected.
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When two atoms form a polar covalent bond the two atoms must have?
When atoms with various electronegativities share electrons inside a covalent link, the result is a polar covalent bond.
How an atom is formed?Atoms are made up of a nucleus in the middle that is surrounded by protons, neutrons, and electrons. Uranium is split into smaller atoms during the fission process, creating new atoms. The creation of atoms in enormous numbers can be seen in the Big Bang as well as Supernova phenomena.
Which element is a atom?Every component of an element is an atom. A specific element only has one kind of atom per atom. Protons, neutrons, and electrons, which are subatomic particles, make up the remainder of an atom. Chemical reactions allow elements to unite to create molecules.
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Which of the following reactants is involved in both fatty acids synthesis and breakdown? A. CO2. B. Malonyl-CoA. C. NADPH. D. Pantothenic acid.
Malonyl-CoA reactant is involved in both fatty acid synthesis and breakdown.
It is used in the formation of fatty acids as an intermediate molecule in fatty acid synthesis. In fatty acid breakdown, on the other hand, it acts as a substrate for the breakdown of fatty acids in the mitochondria to produce energy. Furthermore, NADPH is involved in the synthesis of fatty acids because it provides the necessary reducing power. Pantothenic acid, also known as Vitamin B5, is a cofactor needed for fatty acid synthesis and other cellular processes. A. Although CO2 is not directly involved in the synthesis or breakdown of fatty acids, it is produced as a byproduct of cellular respiration.
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the molecules of which phase have the greatest intermolecular forces, compared to their kinetic energies?
The molecules of a solid phase have the greatest intermolecular forces, compared to their kinetic energies.
This is because solids have a much higher density than gases or liquids, which means that the molecules are more closely packed together and experience stronger intermolecular forces. At the same time, the kinetic energy of molecules in the solid phase is much lower than that of molecules in the gas or liquid phase, since the molecules are not able to move around as freely.
This results in greater intermolecular forces relative to the kinetic energy of the molecules, making the solid phase the phase with the greatest intermolecular forces compared to their kinetic energies.
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what is the formula of the compound forming the reaction when someone reacts oxygen with carbon
CO₂ is the formula of the compound forming the reaction when someone reacts oxygen with carbon.
What is combustion reaction ?Combustion is the chemical reaction that occurs when a substance reacts with oxygen to produce heat. Ethane, wood, and propane are a few examples.
Combustion systems use the energy released by chemical compounds during this reactive process to power vehicles, generate electricity, and provide heat for a variety of applications.
A combustion is another type of combination reaction in which something combines with oxygen and produces heat and light.
Thus, The reaction between carbon and oxygen can be represented as follows:
C(s) + O2 (g) → CO2 (g) + heat.
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Based on what you learned about atoms, select all of the correct statements from the following list. The number of neutrons determines the isotope of an atom. Neutral atoms have the same number of protons as electrons. Electrons surround the nucleus. The nucleus is completely composed of neutrons. Protons are positively charged. Gaining or losing protons produces different ions
Neutral atoms have the same number of protons as electrons, electrons surround the nucleus, the nucleus is composed of protons and neutrons, protons are positively charged, and gaining or losing protons produces different ions.
What is the definition of an isotope in terms of an atom?An isotope is a variation of an element that has a different number of neutrons but the same number of protons. This means that isotopes of an element have the same atomic number, but a different atomic mass due to the difference in neutrons. For example, carbon-12 and carbon-14 are two isotopes of carbon, with the former having 6 neutrons and the latter having 8 neutrons. This distinction of isotopes allows for the study of different atomic structures and their properties.
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Which compound has the lowest boiling point?(a) CH3CH2OH(b) CH3CH2CH3(c) CH3OH.
The compound has the lowest boiling point is the correct option is (a) CH₃CH₂CH₃ compound.
The boiling point depends on the intermolecular force of the attraction. The stronger the intermolecular force of the attraction , the higher will be the boiling point of the compound. The intermolecular force present in the methanol and the ethanol present is the hydrogen bonding. The hydrogen increases the boiling point of the compound.
The hydrogen bonding is absent in the CH₃CH₂CH₃ that is propane, therefore this compound has the lowest boiling point. The ethanol has the higher boiling point.
Thus , propane has the lowest boiling point among the other compounds.
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if such an isotope existed, which one would be best to use for establishing the age of an archeological site that is about 50,000 years old?
Researchers frequently employ radiocarbon dating to establish an archaeological site's age.
The basis for this technique is the radioactive decay of carbon-14 (14C) into nitrogen-14 (14N). The best results from radiocarbon dating come from materials that are older than 50,000 years.
If an isotope with a half-life longer than carbon-14 were to exist, it would probably be based on the decay of a radioactive isotope that was suitable for dating materials older than 50,000 years. For this reason, isotopes like aluminum-26 and beryllium-10 are being researched. These isotopes haven't been employed for dating in a lot of places, though.
In conclusion, there isn't a single "optimal" isotope for dating archaeological sites that are 50,000 years or older. The most popular technique for this is radiocarbon dating, however other approaches are being researched for use in dating ancient materials.
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According to the VSEPR theory, which one of the following species is linear?
A) H2S B) HCN C) BF3 D) H2CO E) SO2
(B) HCN. According to the VSEPR theory, HCN species is linear. It features a triple bond between the C and N atoms and a bond angle of 180 degrees. It is a linear molecule.
What is VSEPR theory and how does it work?According to the theory, electron pairs organize themselves to reduce their magnetic attraction to one another. Lone pair-lone pair > lone pair-bond pair > bond pair-bond pair are the electron pair repulsions in decreasing order. Examples of molecules that follow the VSEPR model include 1.
What are the VSEPR theory's three underlying presumptions?Because they are negatively charged, electron pairs will go as far apart as they can. Space is taken up by lone pairs rather than bonded electron pairs. Compared to single bonds, double bonds take up more room.
What are the VSEPR's restrictions?Because it ignores the relative sizes of the substituents and stereochemically inactive lone pairs, the VSEPR model also fails to predict the structure of some compounds. The d-block elements tend to contain electron pairs that are stereochemically inactive and have relatively high atomic masses.
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Police are investigating the murder of Mr. Trevor Reed. Mr. Reed had a large life insurance policy. Why would the police MOST likely want to know
about this policy?
A.
If Mr. Reed left a lot of money for his family, they would never harm him.
People who would likely benefit from the policy might become suspects.
B.
C.
His policy would list doctors who could supply information about his health.
D. Investigators are in charge of distributing assets to family after someone dies.
The policy's likely beneficiaries could turn out to be suspicions.
What is the largest life insurance?With more than $70 billion in premiums in 2021, State Farm will be the largest provider of property and liability insurance in the country. Whole life insurance, universal life insurance, and term life insurance are the three main types.Limited payment, modified, single-premium, and variable whole life are some of the variants of whole life insurance.Guinness book of records holder: According to Guinness World Records, the most expensive life insurance policy ever sold is on the life of a well-known U.S. millionaire who lives in California's Silicon Valley and is well-known in the technology industry. The policy is valued at a total of $201 million.Term life insurance can be the best option if staying within your financial means is your top priority. if you are a parent to many children.
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How does the replacement of hydrogen with fluorine alter the properties of the compound?
The replacement of hydrogen with fluorine alter the properties of the compound by increasing the density.
Fluorine has special (and frequently significant) properties that are present in organic compounds where some or all of the hydrogen atoms are substituted. Because the C-F bond energy is higher than the C-H bond energy , fluorocarbon compounds have a high degree of kinetic stability but may not be particularly thermodynamically stable.
The density is increased when hydrogen is replaced with fluorine because fluorine's small size means that the substitution causes the least amount of deformation or structural change. Similar to metal salts, fully fluorinated organic molecules have low boiling temperatures due to the weak intermolecular interactions. For fluoropolymers like polytetrafluoroethylene, which is widely used, the low coefficient of friction is one characteristic of the low inter-molecular forces.
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Which of the following statements correctly describe different types of mixtures? Select all that apply.
- A heterogeneous mixture contains two or more different phases.
-The composition of any mixture is variable.
-Differences in particle size account for the main differences between solutions and colloids.
First and second statements are correct regarding different types of mixtures. A heterogeneous mixture contains two or more different phases, and the composition of any mixture is variable.
The first statement, "A heterogeneous mixture contains two or more different phases" is true because heterogeneous mixtures consist of two or more different phases, such as solids, liquids, and gases. Each phase has its own distinct properties, such as viscosity, density, and boiling point, which are determined by the components that make up each phase.
The second statement, "The composition of any mixture is variable" is also true. Mixtures can consist of any combination of the various components that make up the mixture, and the proportions of each component can vary. The different components of a mixture can be combined in a variety of ways, and the proportions of each component can be adjusted to obtain the desired properties of the mixture.
Differences in particle size do not account for the main differences between solutions and colloids, as solutions contain particles that are small enough to be completely dissolved, while colloids contain particles that are larger and remain suspended in the mixture. The main difference is that solutions are homogeneous mixtures, while colloids are heterogeneous mixtures. Solutions are composed of molecules that are small enough to be evenly distributed throughout the mixture, while colloids contain particles large enough to remain suspended in the mixture, creating a heterogeneous mixture.
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you make a 100 ml solution by dissolving 5g of a solid solute in water. the molar mass of the solute is 110 g/mol.What is the molarity?
The molarity to make a 100 ml solution by dissolving 5g of a solid solute is 0.45 M. It can be calculated by using molarity formula.
Molarity is the concentration of a solution in terms of moles of solute per liter of solution. It is denoted by the unit "M" (moles per liter).
The molarity of a solution can be calculated as the number of moles of solute divided by the volume of the solution in liters.
First, we need to determine the number of moles of solute:
5g / 110 g/mol = 0.045 moles
Next, we need to convert the volume of the solution from milliliters to liters:
100 ml * (1 L / 1000 ml) = 0.1 L
Finally, we can calculate the molarity:
0.045 moles / 0.1 L = 0.45 M
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how does hydrogen bonding differ between specific nucleobase pairs?
The hydrogen bonding is differ between the specific nucleobase pairs as cytosine bonds to guanine with the 3 hydrogen bonds and the adenine binds with thymine with the 2 hydrogen bonds .
There ae the four nucleobase, in which the cytosine bonds to guanine with the 3 hydrogen bonds and the adenine binds with thymine with the 2 hydrogen bonds . This is as follows :
G-C base pairs = 3 hydrogen bonds,
A-T base pairs = 2 hydrogen bonds
Therefore, the double-stranded DNA with the higher number of the G-C nucleobase pairs will have more strongly bonded together and are more stable, and they have the higher melting temperature.
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Consider the following thermochemical reaction for Kerosene: 2C12H26(I)+37O2(g)—> 24CO2(g)+26H2O(I)+15,026 KJ
A) When 21. 3 g of Co2 are made, how much heat is released?
B) If 500. 00 KJ of heat are released by the reaction, how many grams of C12H26 must have been consumed?
C) If this reaction were being used to generate heat, how many grams of C12H26 would have to be reacted to generate enough heat to raise the temperature of 750g of liquid water from 10 degrees C to 90 degrees C?
A) The heat released by the reaction can be calculated by using the equation q = ΔH = -nΔHf, where q is the heat, ΔH is the change in enthalpy, n is the number of moles, and ΔHf is the change in enthalpy of formation.
Since the reaction releases 15,026 kJ of heat per mole of C12H26, we can calculate the amount of heat released by 21.3 g of CO2 produced:
First, we need to find the number of moles of CO2 produced: n = mass / molar mass = 21.3 g / (24 g/mol) = 0.8875 mol.
Next, we can use the number of moles to find the heat released: q = ΔH = -nΔHf = -0.8875 * 15026 kJ/mol = -13038.75 kJ.
B) The amount of C12H26 consumed can be calculated by using the equation q = ΔH = -nΔHf, where q is the heat, ΔH is the change in enthalpy, n is the number of moles, and ΔHf is the change in enthalpy of formation.
Since the reaction releases 15,026 kJ of heat per mole of C12H26, we can calculate the number of moles of C12H26 consumed:
n = q / ΔHf = 500 kJ / 15026 kJ/mol = 0.03308 mol.
Finally, we can use the number of moles to find the mass of C12H26 consumed:
mass = n * molar mass = 0.03308 mol * (12 g/mol + 26 g/mol) = 0.03308 mol * 38 g/mol = 1.25 g.
C) The amount of C12H26 required to generate heat to raise the temperature of 750 g of liquid water can be calculated using the equation q = mCΔT, where q is the heat, m is the mass, C is the specific heat capacity of the water, and ΔT is the change in temperature.
First, we need to find the heat required to raise the temperature of 750 g of liquid water:
q = mCΔT = 750 g * 4.18 J/g°C * (90 - 10)°C = 261300 J.
Next, we can use the equation q = ΔH = -nΔHf, where q is the heat, ΔH is the change in enthalpy, n is the number of moles, and ΔHf is the change in enthalpy of formation, to find the number of moles of C12H26 required:
n = q / ΔHf = 261300 J / 15026 kJ/mol = 17.3 mol.
Finally, we can use the number of moles to find the mass of C12H26 required:
mass = n * molar mass = 17.3 mol * (12 g/mol + 26 g/mol) = 17.3 mol * 38 g/mol = 657 g.
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a homogeneous mixture of one or more solutes dissolved in a solvent
A solution is a homogeneous mixture of one or more solutes dissolved in a solvent.
Solutes are substances dissolved in solvents. If the solvent particles attract more than the solute particles, they pull them apart and surround them. These particles leave the solid solute and enter the solution. During solution mixing, chemical polarity causes solvation-specific interactions.
When the solvent constitutes the majority of the combination, the solution usually has the solvent's condition. The concentration of a solution is a key parameter. Aqueous solutions contain water as a solvent. Solutes will not precipitate unless added in excess of the mixture's solubility, which causes hyper saturation.
The complete question is.
What is a homogeneous mixture of one or more solutes dissolved in a solvent?
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Determine the protons, neutrons, and the most likely type of nuclear reaction to occur.
These nuclear processes also produce subatomic particles like protons or neutrons.
How can the kind of nuclear reaction be identified?Nuclear reactions are changes to nuclei that cause adjustments to their atomic weights, masses, or energy levels. We utilize an equation that identifies the nuclides, their mass numbers, atomic numbers, and other particles participating in the process to describe nuclear reactions.These nuclear processes also produce subatomic particles like protons or neutrons.Gamma emission, alpha and beta decay, and other nuclear decay events are the most frequent, but knowledge of the others is crucial.Nuclear reactions are changes to nuclei that cause adjustments to their atomic weights, masses, or energy levels.To learn more about nuclear processes refer to:
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how many oxygen atoms are in 20 molecules of dinitrogen tetroxide, n₂o₄?
There are 80 oxygen atoms present in 20 molecules of dinitrogen tetroxide, N₂O₄.
Steps to be followed to calculate the number of atoms.
For calculating the number of atoms first step is to calculate the number of moles.If the mass of an element or a compound is given then divide the given mass by the molar mass of the element or the compound to find the number of moles.In 1 mole of a substance, the number of atoms denoted as N which equals to 6.023 × 10²³ atoms.Multiply the given moles with N to find the total number of atoms.In one molecule of N₂O₄, 4 oxygen atoms are present.
In 20 molecules of N₂O₄, there are 20 x 4 = 80 oxygen atoms
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Calcium carbonate (CaCO3) is an important component of coral reefs. How many moles are in 98.6 g of CaCO3? Type in your answer using the correct number of significant figures.
98.6 g CaCO3 =
mol CaCO3
Calcium carbonate (CaCO3) is an important component of coral reefs. 0.986 moles are in 98.6 g of CaCO3.
What do you mean by mole ?The term mole is defined as the amount of substance of a system which contains as many elementary entities.
One mole of any substance is equal to 6.023 × 10²³ units of that substance such as atoms, molecules, or ions. The number 6.023 × 10²³ is called as Avogadro's number or Avogadro's constant.
Number of moles of CaCO3 = Mass / Molar mass
Number of moles of CaCO3 = 98.6 g / 100g/ mol
= 0.986 moles
The balanced chemical equation of this reaction is as follows:
CaCO₃ → CaO + CO₂
Therefore, the reaction ratio is 1:1:1.
So, 0.986 moles of CaO are formed.
Thus, 98.6 g CaCO3 = 0.986 moles CaCO3.
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brass is the solution in which a solid is dissolved in a(n)
Brass is the solution in which a solid is dissolved in a solid
What is solution?If we talk about a solution we know that something have been dissolved in another. This is the key conscept when we talk of a solution. We often think of teh dissolution of a solid olr a gas in a liquid when the word solution does pop up.
Has it ever occured to you that a solid can also be dissolved ion a solid? Oh yes! This is what we call the alloys. There is an alloy when there is the solution of a solid in a solid such as brass.
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Brass is the solution in which a solid is dissolved in a solid and is therefore denoted as option D.
What is a Solid?
This is one of the four fundamental states of matter and the molecules are usually closely packed together and contain the least amount of kinetic energy.
Brass is a solution of zinc in copper. Brass is proposed by mixing molten zinc with molten copper and cooling their mixture which brings about them being homogenous.
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The full question:
brass is the solution in which a solid is dissolved in a(n)Select one:
a. gas
b. liquid
c. water
d. solid
does a good hypothesis contradict prior hypothesis
Yes a good hypothesis contradicts prior hypothesis.
Prior hypothesis is defined as a bias a decision-making error in which decision makers rely on strong prior beliefs about the relationship between two variables even when presented with evidence that their beliefs are wrong.
Good hypotheses are also known as testable hypotheses. This means that one can actually carry out the intent of the question reflected by the hypothesis. For example, let's consider number of hours of parental reading and outcome scores as measured by a test of comprehension are all objective and can be incorporated reliably.
Hence, a a good hypothesis contradicts prior hypothesis.
Learn more about good hypothesis from the link given below.
https://brainly.com/question/30361039
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