Cleaning supplies for spills should always be disposed of as hazardous trash. Therefore, it is necessary to store and package items like sorbent materials and cleaning supplies for the disposal of hazardous waste.
What is equipment, briefly?The term "equipment" most frequently refers to a group of items or other things that are regularly employed to accomplish a certain goal. Equipment needs vary depending on the work.
Is there a term for equipment?The plural form of the word equipment is absent. There is no term "equipments," it is only used in the singular, and it goes with a singular verb. There are about 100 common words in this category, which are referred to as "noncount nouns" or "mass nouns."
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Question
Drag each tile to the correct box.
Based on your observations in this task, rank the three types of substances according to the strength of the forces between particles, from weakest to strongest.
Tiles
A. ) polar substances
B. ) nonpolar substances
C. ) ionic substances
Therefore option C is the correct option.
The gravitational force that binds the atom's constituent particles together is known as intermolecular force. The force that unites the many parts when they combine is the one that is being discussed in the inquiry.
Ion-dipole forces, hydrogen bonds between molecules, dipole-dipole forces, and van der Waals forces are the intermolecular forces listed in the answer choices in order of strength to weakness. The strongest intermolecular attraction is between dipoles. They exist between all types of molecules, whether ionic or covalent, polar or non-polar, and are the weakest intermolecular forces.
Compared to liquids and gases, solids typically exhibit the highest intermolecular forces. Because the particles are packed closely together, solids are incompressible and dense. The London dispersion force is the least powerful intermolecular force.
Dispersion Force of London Because it is a transient attractive force that causes a transient dipole, the London dispersion force is also known as the induced dipole. Nonpolar monatomic gases can exhibit London dispersion.
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cesium chloride packs in a crystalline lattice (shown). the cesium ion is the darker atom and the chloride ions are the lighter spheres in the unit cell shown. what is the empirical formula of the salt?
The cesium ion is the darker atom and the chloride ions are the lighter spheres in the unit cell that empirical formula of the salt is CsCl.
A compound's empirical formula yields the simplest whole number ratio of the elements in the compound. Cesium (Cs) ions and chloride (Cl) ions are present in the cesium chloride salt. The unit cell seen in the figure has one cesium ion and one chloride ion, meaning that the two components in the compound are in a 1:1 ratio. As a result, the salt's empirical formula is CsCl.
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Across the unit cell's body diagonal, cations and anions are in contact, with the ammonium ion's radius being 167 pm.
The distance between successive atoms of the same element is divided in half to determine the atomic radius of a molecule. Measuring the atomic radii of chemical elements is difficult since their atomic scale is on the order of 1.210-10 m. Since the electron cloud that makes up the atomic shell is ill-defined, it is difficult to determine an atom's size. The size of an atom can thus be inferred to be essentially impossible to quantify. The radius of an atom increases directly as the atomic number increases. The radius of each atom closest to you increases as you descend a particular column of the periodic table. As you move down the periodic table, the proportion of complete electron shells increases, resulting in a larger size.
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You have two objects made of the same substance. Object 1 is a cube with a mass of 245.9 g. You measure the side of the cube using a ruler and find it to be 3.17 cm. Object 2 is a sphere with a mass of 123.0 g. You find the volume of the sphere using water displacement. The volume of the water in a graduated cylinder initially is 120.0 mL, and when the sphere is added the new volume is 135.8 mL.Having found a density of 7.71 g/cm³ for the cube and a density of 7.78 g/mL for the sphere, which one of the following statements is true?
A) The density of the cube appears to be smaller than the sphere because the units used for the two density values are not the same.
B) The density of the sphere and cube are not the same because their volumes and masses are different.
C) The density of the sphere and cube are different because the shapes of the substance are different
D) The density of the cube and sphere should
The one of the statements is true is the correct option is B) The density of the sphere and cube are not the same because their volumes and masses are different.
The density is define as mass per unit the volume. The formula to calculate the density is as follows :
Density = mass / volume
It is clear from the formula that , the density is depends on the mass and the volume that occupied it. The S.I unit of the density is kg/ m³. the mass increases the density of the substance also increases. If the volume increases the density is decreases.
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A regular 12-oz beer is about 5% alcohol. This works out to about 14. 03 grams of alcohol per beer. If the driver drank two beers, how many grams of alcohol did he consume?.
A regular 12-oz beer is about 5% alcohol. This works out to about 14. 03 grams of alcohol per beer. If the driver drank two beers, he consume 28.06 grams of alcohol.
A regular 12-oz beer has 5% alcohol by volume. According to this, a beer contains roughly 14.03 grams of alcohol.
So the mass alcohol in two beers would be
mass alcohol in 2 beers= 2 x mass alcohol in 1 beer
Mass alcohol in 2 beers=14.03 grams of alcohol x 2 = 28. 06 gram
Therefore, 5% alcohol makes up a typical 12-oz beer. According to this, a beer contains roughly 14.03 grams of alcohol. Two beers would equal 28.06 grams of alcohol for the driver.
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of two different liquids are poured into uncovered identical beakers and let stand for 10 minutes: liquid a liquid b what's different about liquids a and b? your answer should be the one- or two-word name of a physical property.
The difference between liquids A and B can be determined by looking for differences in one or more of their physical properties.
Physical properties that could be used to compare the two liquids include density, viscosity, surface tension, boiling point, freezing point, solubility, and refractive index. By measuring the values of these properties for each liquid, one can compare them to determine if there is a difference between the two. For example, if liquid A has a higher density than liquid B, then it is denser. If liquid A has a higher viscosity than liquid B, then it is more viscous. If liquid A has a higher surface tension than liquid B, then it is more surface active. By comparing the values of these physical properties, one can determine the differences between liquids A and B.
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A sample of baking soda, nahco3, always contains 27. 37% by mass of sodium, 1. 20% of hydrogen, 14. 30% of carbon, and 57. 14% of oxygen. Which law do these data illustrate?.
A sample of baking soda, NaHCO₃, always contains 27. 37% by mass of sodium, 1. 20% of hydrogen, 14. 30% of carbon, and 57. 14% of oxygen. These data illustrate the law of constant proportion.
According to the law of constant proportions, components in chemical compounds are present in a fixed mass ratio. This suggests that no matter the source, any pure sample of a chemical will always have the same elements that are present in the same ratio by mass. For instance, pure water will always have a set mass ratio of hydrogen to oxygen (a gramme of water consists of approximately 0.11 grammes of hydrogen and 0.88 grammes of oxygen, the ratio is 1:8).
Some exceptions to this rule exist. Different samples have different elemental ratios in non-stoichiometric substances. The law of constant proportions does not apply to these compounds, hence they are an exception. The law of definite proportions can also be broken by samples of elements with varied isotopic compositions since different isotopes of an element have different weights. The law of constant proportions is also known to be broken by some natural polymers.
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In Rutherford’s gold foil experiment, many of the alpha particles passed straight through the gold foil, completely undeflected. What did Rutherford conclude from this observation?
A. Alpha particles have a positive charge.
B. Electrons have a negative charge.
C. An atom is made up of mostly empty space.
D. There is a dense area within an atom that has a negative charge.
Answer: C
Explanation:
Rutherford's Gold Foil Experiment
These were his conclusions.
Aimed beam of alpha particles at a thin piece of gold foil and found most of the particles passed through the gold foil without being scattered, except for a few particles.He found the volume of an atom is mostly empty space.He proposed there is a heavy, positively charged body at the center of each atom that contains most of the mass.Electrons are throughout the atom.Number of electrons outside the nucleus equals the number of protons in the nucleus. Atom is electrically neutral."Why does magnesium chloride
(MgCl2) have a higher lattice energy than sodium chloride (NaCl)?"
Magnesium chloride, with the inorganic compound MgCl2, is an inorganic compound. It produces hydrates MgCl2nH2O, where n may be any value around 1 and 12. These salts are solids which are either colorless or white and are very soluble in water. These substances, both in their compounds and in their solutions, are found in nature and have many important uses. The principal precursor of magnesium oxide, which is manufactured on a vast scale, is anhydrous magnesium chloride. The form that is most widely obtainable is calcium magnesium bromide.
The formula for magnesium chloride is MgCl2. This signifies that it has two chloride atoms and one magnesium atom in it. It is a solution that combines either magnesium plus chlorine. It can be obtained from natural from the sun absorption of saltwater.
Despite the fact that the MgCl2 has a greater lattice energy than NaCl, let's examine their melting points. The melting points show a weaker MgCl2 lattice. Furthermore, MgCl2 hydroxyl radicals in water but NaCl does not! This demonstrates that MgCl2's lattice has a covalent character, this indicates that the ionic proportion is smaller.
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the emission spectrum of hydrogen consists of several series of sharp emission lines in the ultraviolet (lyman series) in the visible (balmer series) and in the infrared (paschen series, brackett series, etc.) regions of the spectrum. (a) what feature of the electronic energies of the hydrogen atom explains why the emission spectrum consists of discrete wavelength rather than a continuum wavelength?
The emission spectrum of hydrogen consists of discrete wavelengths rather than a continuum because of the quantization of energy levels in the hydrogen atom.
What is emission spectrum?
An emission spectrum is a spectrum of electromagnetic radiation emitted by a substance as a result of electronic transitions from a higher energy state to a lower energy state. In an emission spectrum, a sample of a substance is excited by an external energy source, such as heat, light, or electricity, which causes electrons in the substance to be elevated to higher energy levels.
According to quantum mechanics, electrons in an atom can occupy only certain energy levels, and they cannot occupy levels in between.
When an electron in an excited state of the hydrogen atom returns to its ground state, it releases energy in the form of a photon with a specific wavelength that corresponds to the difference in energy between the two states.
Since only certain energy levels are allowed in the hydrogen atom, only certain wavelengths of photons can be released, leading to the discrete line spectrum rather than a continuous spectrum.
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What material is MOST effective in washing off explosive residue?
A. kerosene
B. gasoline
C. hydrocarbons
D. acetone
The material which is most effective in washing off explosive residue is referred to as acetone and is therefore denoted as option D.
What is an Explosive?This is referred to as a substance or device that can be made to produce a volume of rapidly expanding gas in an extremely brief period.
Explosive residue which is referred to as fragments of a container in which the residue corresponds to the shell of the container usually have most plastic type of stains that cannot be dissolved by other dryside agents. Acetone on the other hand is used to reduce or even remove many difficult stains such as paints, and the residues which is therefore the reason why it was chosen as the correct choice.
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why is there size dependence for the strength of ceramics but not for metals
There is the size dependence for the strength of the ceramics but not for the metals because in the ceramic the covalent and the ionic bond is present and in the metals metallic bond is present. The metal bond is weaker.
In the ceramics, the strength is the dependence on the size because of their brittle nature and the microcracks present on it. In the metals, the strength is not depend on the size because of their ductile nature and metals have ability to deform the plastically without any breaking.
Thus, the ceramics are the size dependence because of their tough nature and the metals have the ductile nature.
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Which of the following describes viscosity?
A. How shiny a substance is
B. The temperature at which a substance melts
C. How easily a liquid flows
D. The ratio of mass to volume
Answer:
how easily a liquid flows
A student works with a crucible weighing 35.100 g. He obtains a piece of magnesium and adds it to the crucible and weights it to obtain a new weight of 35.153 g. The student burns the magnesium with excess oxygen. The new mass is 35.162. The number of mols of oxygen used in this reaction is _____g mols of O2. The empirical formula of magnesium oxide will contain ___Magnesium atoms to___oxygen atoms.
The number of mols of oxygen used in this reaction is 0.5 mols of O[tex]_2[/tex]. The empirical formula of magnesium oxide will contain one Magnesium atoms to one oxygen atoms.
What is magnesium oxide?To keep the body's magnesium levels balanced, magnesium oxide is taken as a supplement. Additionally, magnesium oxide is employed as a laxative to treat occasional constipation as well as an antacid to cure indigestion.
A student works with a crucible weighing 35.100 g. He obtains a piece of magnesium and adds it to the crucible and weights it to obtain a new weight of 35.153 g. The student burns the magnesium with excess oxygen. The new mass is 35.162. The number of mols of oxygen used in this reaction is 0.5 mols of O[tex]_2[/tex]. The empirical formula of magnesium oxide will contain one Magnesium atoms to one oxygen atoms.
Therefore, the empirical formula of magnesium oxide will contain one Magnesium atoms to one oxygen atoms.
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Before this reaction was run, the reaction container, including the caco3, had a mass of 24. 20 g. After the reaction, the container with product (and any unreacted reactant) had a mass of only 22. 00 g because the co2 gas produced did not remain in the container. What mass of caco3 reacted?.
The mass of CO2 produced can be calculated as the difference between the initial mass and the final mass of the container: 24.20 g - 22.00 g = 2.20 g.
Since the reaction produces only CO2, the mass of CaCO3 that reacted can be determined as the mass of CO2 produced: 2.20 g.
The initial mass function (IMF), which defines the initial distribution of masses for a population of stars in astronomy, is an empirical function. The process of star creation produced the IMF.
A mapping between the mass of a white dwarf remnant and the former mass of the hydrogen-burning main-sequence star that gave rise to it is represented by the initial-final mass relation.
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what is the definition of mass? please choose the correct answer from the following choices, and then select the submit answer button. answer choices a measure of the quantity of matter in a sample. the smallest amount of an element that still has characteristics of the element. the downward force exerted by matter in the presence of gravity. the simplest form of matter that has distinct physical and chemical properties.
a measure of the quantity of matter in an object is the definition of mass.
What is mass of an object?An object's mass is just a count of its atoms. The kilogram is the fundamental unit of mass measurement. It is the characteristic of matter that gauges its resistance to acceleration.
What is matter?Any substance with mass and volume is considered matter in classical physics and generic chemistry.
What is atom?An atom is a unit of matter that specifically characterizes a chemical element. One or more negatively charged electrons surround the core nucleus of an atom, which is made up of all of them. One or more protons and neutrons, which are comparatively heavy particles, can be found in the positively charged nucleus.
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linolenic acid is an omega-3 fatty acid. what does omega 3 mean
Omega-3 means the form of polyunsaturated fat that the body derives from food.
What are fatty acids?Fatty acids are any of a class of aliphatic carboxylic acids, of general formula CnH2n+1 COOH, that occur combined with glycerol as animal or vegetable oils and fats.
Linoleic acid is a polyunsaturated fatty acid, having 18 carbon atoms and two double bonds, essential for human nutrition. It is found in linseed, sunflower and other vegetable oils.
According to this question, linoleic acid is an omega-3 fatty acid. Omega-3 fatty acids are a form of polyunsaturated fat that the body derives from food.
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a set of erythrocytes is placed in a beaker of 0.9% nacl. nothing appears to happen to the cells. why?
Erythrocytes are added to a beaker containing 0.9% NaCl. Because 0.9% NaCl is isotonic to the cells, nothing seems to happen to the cells.
Isotonic solution:
A hypertonic solution is any external solution having a high solute content and a low water concentration in compared to body fluids. In a hypertonic solution, water will often migrate from the body into the solution.
Why are hypotonic solutions used by people?
A liquid that contains less dissolved particles, such as salt and other electrolytes, than are found in blood and healthy cells. To treat or prevent dehydration, hospitalised patients typically receive intravenous fluids in hypotonic solutions.
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neutralizes the acidic chyme as it enters the small intestine.
The neutralization of acidic chyme as it enters the small intestine is an important function of bicarbonate, a substance produced by the pancreas.
The mixture of partially digested food that exits the stomach and travels to the small intestine is known as chyme. Due to the hydrochloric acid produced by the stomach, which aids in the breakdown of food, it has a low pH. However, if the chyme is overly acidic, it may irritate the small intestine's walls and cause digestive issues. In order to stop this from happening, the pancreas secretes bicarbonate, which balances the chyme's acidity and raises its pH to a level less damaging to the intestinal walls. The chyme's hydrochloric acid and bicarbonate react to create carbonic acid, which breaks down into water and carbon dioxide very quickly.
The chyme's acidity is neutralized by this process, enabling the small intestine to digest and absorb nutrients more effectively.
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For the conversion of reactant A to product B, the change in enthalpy is 7 kJ.mol-1 and the change in entropy is 20 J.K-1.mol-1. Above what temperature does the reaction become spontaneous?a. 77oCb. 66oCc. 33oCd. 44oCe. 55oC
For the conversion of reactant A to product B, the change in enthalpy is 7 kJ.mol-1 and the change in entropy is 20 J.K-1.mol-1. Temperature above a) 77°C the reaction become spontaneous
The temperature at which the reaction becomes spontaneous can be determined by using the Gibbs free energy equation, ΔG = ΔH - TΔS, where ΔG is the change in Gibbs free energy, ΔH is the change in enthalpy, ΔS is the change in entropy, and T is the temperature in Kelvin.
If ΔG is negative, the reaction is spontaneous, if ΔG is positive, the reaction is non-spontaneous, and if ΔG is zero, the reaction is at equilibrium.
So, to find the temperature at which the reaction becomes spontaneous, we can rearrange the equation to T = ΔH / ΔS - ΔG / ΔS. Plugging in the values given, we have:
T = 7 kJ.mol-1 / 20 J.K-1.mol-1 = 350 K = 77°C (approximately).
So, the answer is a) 77°C.
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1. What should you expect when looking at a 1H NMR spectrum of a mixture of compounds?
A. The integrations for peaks will likely look "off" with respect to one another
B. All peaks will be broader and more upfield
C. Splitting will be doubled (singlets will become doublets, doublets will become quartets, etc)
D. Integrations for all peaks will double
A. The integrations for peaks will likely look "off" with respect to one another., is the correct option.
What is NMR spectra?NMR spectroscopy (NMR spectra) is a analytical tool used in chemistry and biochemistry to determine the structure and composition of a molecule by measuring the magnetic properties of its nucleus. NMR spectra provide information about the number of different types of atoms in a molecule, the environment of these atoms, and the distances and angles between them. This information is then used to generate a detailed picture of the molecule's structure and how it is bonding to other molecules.
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how does a magnitude-8 earthquake compare to a magnitude-7 quake when it comes to the energy released?
please helps due today!!!
Answer: 10
Explanation:
"To compare two earthquakes in terms of shaking, you subtract one magnitude from the other and raise 10 to that power: 10^(M1-M2)." (from science.org).
So, comparing a magnitude 8 and 7 earthquake,
8-7=1.
the stronger earthquake shakes 10^1 or 10 times as hard as the milder one.
how many cl- ions are there in 400.5 grams of alcl3? A. 9.000 ionsB. 1.500 X 10^-23 ionsC. 1.810 X 10^24 ionsD. 5.420 X 10^24 ions
The number of cl- ions are there in 400.5 grams of alcl3 is 9.000 ions.
An atom or molecule with a net electrical charge is known as an ion. Conventionally, the charge of an electron is thought to be negative. This charge is equivalent to and opposite from the charge of a proton.
Lets start by calculating molar mass of AlCl₃
Molecular mass of Aluminium is 27 and that of Chlorine is 35.5
Al = 1 x 27 = 27
Cl = 3 x 35.5 = 106.5
AlCl₃ = 27 + 106.5
AlCl₃ = 133.5
The number of ions of Cl using proportions is
133.5 grams of AlCl₃ ------------- 3 ions of Chlorine
400.5 grams of AlCl₃ ------------ x
x = (400.5 x 3) / 133.5
x = 9
Therefore, the number of cl- ions are there in 400.5 grams of alcl3 is 9.000 ions.
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Do sigma bonds result from the overlap of orbitals in only one region of space?
No, sigma bonds result from the overlap of orbitals in two regions of space.
Sigma and the pi bonds are basically two types of covalent bonds which differ in the overlapping of the atomic orbitals. Covalent bonds are formed as a result of the overlapping between the atomic orbitals. Sigma bond is formed by a head-on positive or the same phase overlap of the atomic orbitals along the internuclear axis.
Sigma bonds are basically the strongest covalent bonds as a result of the direct overlapping of the participating orbitals. The electrons which are participating in a σ bond are referred to as σ electrons. These bonds are formed as a result of the overlap of the orbitals in two regions of space. Generally, all of the single bonds are sigma bonds.
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SCIENCE HELP PLEASE
Click on a mineral with known hardness. Move the sample minerals to the mineral to scratch it. Record your observations
in the Student Guide
+
MINERALS WITH
KNOWN HARDNESS
MINERAL SAMPLES
Gypsum
Apatite
Mineral
Mineral 2
Mineral 3
Fluorite
Calcite
Mineral 4
Mineral 5
Mineral 6
Quart
Orthoclase
Clear
Р
COOOOOO
5 of 10
Tutoring Help
evious Activity
If the volume and pressure of the gas are known, the ideal gas law may determine the temperature of the hydrogen gas.
According to the ideal gas law, the ideal gas's pressure and absolute temperature are both exactly proportional. PV = nRT. Where P represents the gas pressure V is the gas's volume. The number of gas moles is n. T is the gas's temperature. As a result, we can draw the conclusion that according to the ideal gas law, the hydrogen gas's temperature can be calculated if its volume and pressure are known. Ideal gas law states that for 1 mole of an ideal gas, the product of Pressure and Volume equals the product of Temperature and Universal Gas Constant R. The symbol for the equation is PV = nRT. No gas is ideal; hence it is only relevant for ideal gases. At STP, all gases are assumed to function optimally.
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when using a properly stabilized balance, how should you ensure that you get the most accurate mass reading possible? select one or more: lean on the table to steady the balance during reading. measure the mass of the sample at room temperature. close the side shields on the balance during reading. place the sample on the edge of the balance pan.
Answer:
To ensure the most accurate mass reading when using a properly stabilized balance, you should:
Place the sample in the center of the balance pan.Avoid touching or tapping the balance while taking the measurement.Measure the mass of the sample at room temperature.Close the side shields on the balance during reading to reduce air currents and vibrations.PLEASE HELP ME AND DONT GUESS!!!
A. 60.6 g CO2
B. 30.3 g CO2
C. 121.2g CO2
In the fermentation of sugar to make ethanol and CO2, 1 mole of glucose (C6H12O6) reacts with 6 moles of oxygen to produce 6 moles of CO2 and 2 moles of ethanol (C2H5OH).
How many grams of carbon dioxide (CO2) are produced when 124 grams of sugar are used in a recipe?Since 1 mole of glucose is equal to 1206 grams, 124 grams of sugar is equal to approximately 0.102 moles of sugar.Therefore, the number of moles of CO2 produced would be:0.102 moles of sugar * (6 moles CO2 / 1 mole sugar) = 0.612 moles of CO2And the number of grams of CO2 produced would be:0.612 moles of CO2 * (44.01 g/mol) = 26.98 g of CO2So when 124 grams of sugar are used in a recipe, approximately 26.98 grams of CO2 are produced.To learn more about chemical reaction refer:
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calculate the number of moles of carbon dioxide, co2, if you begin with 1.84 x 1022 molecules of carbon dioxide.
The number of moles of carbon dioxide, CO₂ are equal to the 0.0306 mole.
We have a molecule of carbon dioxide, CO₂ with one carbon atom contributes 12.01 g/mol, the two oxygens together contribute (2)(16.00) = 32.00 g/mol. The molar mass of carbon dioxide is equals to 44.01 g/mol. Let the required number of moles of carbon dioxide be "n". From above data that 1.84× 10²³ CO₂ molecules. So, one mol = 6.022× 10²³molecules then Number of moles = molecules/6.022× 10²³ molecules/mol. Now, to determine the moles in 1.84× 10²² molecules of carbon dioxide :
n = 1.84× 10²² /6.022× 10²³
n = 0.030 mol of CO₂ are present
Hence, the required number of moles is 0.030 mol.
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What is the volume in liters of 5. 50 moles of CO2 at standard
temperature and pressure (STP)?
The volume of a gas at STP is defined as 22.4 liters per mole. So, 5.50 moles of CO2 at STP would occupy a volume of:
5.50 moles * 22.4 liters/mole = 123.4 liters
What is the equation used to calculate the volume of a gas at STP?The equation used to calculate the volume of a gas at standard temperature and pressure (STP) is V = nRT/P, where V is the volume, n is the number of moles, R is the gas constant, T is the temperature in Kelvin, and P is the pressure in atmospheres. This equation assumes that the gas is behaving ideally, meaning that its pressure, volume, and temperature are directly proportional to one another. By using this equation, we can calculate the volume of a gas at STP given the number of moles and its pressure and temperature. This equation is commonly used in chemistry and physics to predict the behavior of gases under specific conditions.
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Who is considered the father of modern Astronomy?
Galileo
Newton
Copernicus
Leonardo da Vinci
Nicolaus Copernicus is considered the father of modern astronomy for his pioneering heliocentric model of the solar system, placing the Sun at its center and marking a significant departure from the earlier geocentric model.
Explanation:The individual considered the father of modern astronomy is none other than Nicolaus Copernicus. He was a Polish astronomer who proposed the heliocentric model of the solar system. This model proposed that the Sun is at the center of our solar system and the planets, including Earth, orbited around it. This theory marked the beginning of modern astronomy as it challenged the previously accepted geocentric model where Earth was considered as the center of the universe.
Galileo Galilei and Sir Isaac Newton were also key figures in the development of astronomy, but it was Copernicus's idea which represented the true dawn of modern astronomy. Leonardo da Vinci, while a genius in his own right, is not primarily associated with the field of astronomy.
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If you have 1. 0 mol of each of the following compounds, which will have the greatest mass?.
NI3 has the highest molar mass = 394.707 grams
1 mole of each substance contain mass which is equal to molar mass of the substance .Molar mass is calculated in the same way the molecular mass is calculated.The Molar mass id expressed in grams.How to calculate Molecular mass?Molecular mass = Mass of the atom x the number of atoms
Atomic mass of H = 1.00 amu
O = 15.99 amu
P = 30.97 amu
= 3(Mass of H) + 1(Mass of P) + 4(Mass of O)
= 3(1)+ 1(30.97) + 4(15.99)
= 3 + 30.97 + 63.96
= 97.93 gram
= 1 (mass of N) + 3(mass of I)
= 1(14.0067)+3(126.9)
= 394.7067 grams
= 1(atomic mass of Fe) + 3(atomic mass of Cl)
= 1(55.845)+3(35.45)
= 55.845 + 106.35
= 162.195 grams
KCl = 1(mass of K) + 1(mass of Cl)
= 1(39.09) + 35.45
= 74.54 gram
Out of these NI3 has the highest molar mass = 394.707 grams
Hence NI3 is a correct answer.
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