Yes, the aerosol given off by an e-cigarette can contain dangerous chemicals, such as nicotine, ultrafine particles, volatile organic compounds, and heavy metals.
Inhaling these chemicals can increase the risk of lung and heart disease.
E-cigarettes are becoming increasingly popular as an alternative to tobacco-based cigarettes. However, many people are unaware of the potential dangers associated with using e-cigarettes. The aerosol produced by e-cigarettes can contain not only nicotine, but also other chemicals and particles that can be harmful to the user’s health. These include ultrafine particles, volatile organic compounds, and heavy metals such as lead and nickel.
When these particles and chemicals are inhaled, they can cause inflammation and irritation of the lungs and airways, leading to a variety of respiratory illnesses.
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Help Please!! How do I do this?
A sample of nitrogen is heated from STP to 100°C at constant pressure. Calculate the volume at 100°C.
Considering the Charles' law and STP conditions, the volume at 100°C is 30.60 L.
Charles' lawCharles' law establishes the relationship between the volume and the temperature of a sample of gas at constant pressure and establishes that when the temperature is increased the volume of the gas also increases and that when cooling the volume decreases.
Mathematically, Charles's law is expressed as:
V÷T=k
where:
V is the volume.
T is the temperature.
k is a constant.
Analyzing an initial state 1 and a final state 2, it is fulfilled:
V₁÷T₁= V₂÷T₂
STP conditionsThe STP conditions refer to the standard temperature and pressure. Pressure values at 1 atmosphere and temperature at 0 ° C are used and are reference values for gases. And in these conditions 1 mole of any gas occupies an approximate volume of 22.4 liters.
Volume at 100°CIn this case, you know:
V₁= 22. 4 LT₁= 0°C= 273 KV₂= ?T₂= 100 °C= 373 KReplacing in Charles' law:
22.4 L÷ 273 K= V₂÷ 373 K
Solving:
(22.4 L÷ 273 K)× 373 K= V₂
30.60 L= V₂
Finally, the final volume is 30.60 L.
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Glass is typically produced by mixing sand (quartz or silica, SiO_2) with other compounds or minerals, which are then crushed, melted, and then cooled (vitrification). Given the compositions and properties of the different types of glass in the table above, consider the role each compound plays in the type of glass formed, and then complete the statements below. Match the compounds in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is complete before submitting your answer. Adding to the mixture that undergoes vitrification produces a glass with brilliant optical properties. Adding to the mixture that undergoes vitrification produces a glass that can be used for baking purposes or storing chemical solutions. Adding to the mixture that undergoes vitrification produces a glass that is insoluble in water. Adding to the mixture that undergoes vitrification allows the glass to be produced at much lower temperatures.
Addition of soda (Na₂CO₃) to the vitrifying mixture produces glasses with excellent optical properties.
Give a brief account on silica?Silica is the common name for the compound silicon dioxide, which consists of one silicon atom and two oxygen atoms. It is an important component of many rocks, sands, and clays, and is also found in many plants and animals. Silica is used in a wide variety of products, from beer and wine to pottery, glass, and paint. It is also used in building materials such as concrete and mortar, and as a food additive. Silica is also used to make silicon-based electronics such as computer chips.
Adding lime (CaCO₃) to the vitrifying mixture creates a jar that can be used to bake or store the liquid medicine.
Addition of alumina (Al₂O₃) to a mixture undergoing vitrification produces a glass that is insoluble in water.
Addition of borax (Na₂B₄O₇) to the mixture during vitrification allows glass to be produced at much lower temperatures.
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Please help, I have tried everything that I can think of
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, theoretical yield of Al[tex]_2[/tex]O[tex]_3[/tex] is 136g.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number. The stoichiometry represents the number of moles.
4AI + 3O[tex]_2[/tex]→ 2Al[tex]_2[/tex]O[tex]_3[/tex]
moles of Al =54/26=2.07
moles of O[tex]_2[/tex]=64/32=2
Since oxygen is limiting reagent, so product will be according to oxygen
Theoretical yield of Al[tex]_2[/tex]O[tex]_3[/tex]=136g
Therefore, theoretical yield of Al[tex]_2[/tex]O[tex]_3[/tex] is 136g.
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How many moles of aspartame are present in 4.50 mg mg of aspartame?
1.53 × 10⁻⁵ moles of aspartame are present in 4.50 mg of aspartame.
Two amino acids, aspartic acid and phenylalanine, make up the low-calorie sweetener known as aspartame. In addition to being present in tabletop sweetener packets, aspartame is a common component used to substitute sugar in low-calorie foods and beverages.
Here there are 4.50 mg of aspartame.
First, the mass is converted from mg to g by:
1 g = 1000 mg
So, 1 mg = 0.001 g
So, 4.5 mg = 4.5 × 10⁻³ g
Molar mass of aspartame = 294.40 g/mol
So, Number of moles of aspartame = [tex]\frac{Given mass}{Molar mass}[/tex]
or, n = 4.5 × 10⁻³ / 294.3
or, n = 1.53 × 10⁻⁵ moles.
Hence, 4.50 mg of aspartame has 1.53 × 10⁻⁵ moles of aspartame.
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In a given reaction, the rate may be expressed as either rate What must be true about X or Y if the reaction is proceeding in the forward direction
In a given reaction, the rate may be expressed as either the rate of formation of a product (X) or the rate of consumption of a reactant (Y). If the reaction is proceeding in the forward direction, the rate of formation of the product (X) will be positive and the rate of consumption of the reactant (Y) will be negative.
This means that X is being produced at a faster rate than it is being consumed and Y is being consumed at a faster rate than it is being produced.
Alternatively, if the reaction proceeds in the opposite direction, the rate of formation of products (X) is negative and the rate of consumption of reactants (Y) is positive. This means that X is consumed faster than it is produced, and Y is produced faster than it is consumed.
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How many moles is 25g?
25 grams of a substance is equivalent to 0.0088 moles. To calculate the number of moles, the following equation can be used:
Number of moles = mass (in grams) / molar mass
The molar mass is the mass of 1 mole of a substance and is expressed in grams/mol. It is equal to the sum of the atomic masses of all the atoms in a molecule.
To calculate the number of moles from 25 grams, the molar mass of the substance must be known. Once the molar mass is known, the equation can be used to calculate the number of moles.
For example, if the substance is sodium chloride (NaCl), the molar mass is 58.44 g/mol. Applying the equation above, the number of moles can be calculated as 25 g / 58.44 g/mol = 0.0088 moles.
In conclusion, 25 grams of a substance is equal to 0.0088 moles. The molar mass of the substance must be known to calculate the number of moles from a given mass. Once the molar mass is known, the equation can be used to calculate the number of molecules.
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the safety air bag in automobiles are inflated by nitrogen gas by the rapid decomposition of sodium azide:
sodium azide (NaN3) is used to inflate the safety airbags in automobiles (g) This airbag should be filled with N2 at a pressure of 1.15 atm and temperature of 26.0°C. It has a volume of 36 L.
Modern automobiles use numerous technical components and subsystems, each of which performs a specific design function. Some of these have thousands of individual pieces and were made possible by new or improved technologies, such as electronic computers, high-strength polymers, and novel alloys of steel and nonferrous metals. Air pollution, safety regulations, and global manufacturer competition, among other things, have all contributed to the development of some subsystems.
With an estimated 1.4 billion in use worldwide, passenger vehicles have become the main form of family transportation. In the United States, where more than three trillion miles (almost five trillion kilometers) are traveled annually, roughly one-fourth of these are located.
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What were the 3 missing elements in the periodic table?
The three missing elements in the periodic table are gallium, germanium and scandium.
Gallium, germanium, and scandium have been all unknown in 1871, however, Mendeleev left areas for every and expected their atomic loads and different chemical properties. Within 15 years, the “lacking” factors have been discovered, conforming to the simple traits Mendeleev had recorded. Scientists in Japan suppose they have eventually created the elusive detail 113, one of the lacking gadgets at the periodic table of factors. Element 113 is an atom with 113 protons in its nucleus — a kind of depend that should be created inner a laboratory as it isn't always located evidently on Earth.
The elements are gallium, germanium and scandium.
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Which of thee would NOT
be conidered a biome?
A. A region that ha everal grouping of
the ame plant communitie. B. A region that ha everal grouping
of the ame animal communitie. C. A mall habitat that contain it own
ecoytem (uch a a tree tump). D. A large area of the Earth that ha a
imilar climate
A large area of the Earth that has a similar climate is not considered a biome.
Hence, option D is correct.
Scientists can identify a biome by defining the range of temperatures, the kind of soil, the amount of light, and the amount of water that are distinctive to that location. These factors create niches for particular species.A biome is a community made up of all the habitats in a given region and climate, whereas a habitat is the place where a group of one type of organism (a population) resides. Different creatures live in many types of biomes.Scientists disagree on the exact number of biomes that exist on earth, therefore we will focus on the six most significant ones: freshwater, marine, desert, forest, grassland, and tundra.
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Are group 1 or group 2 elements more reactive?
The elements belonging to group 1 are more reactive than elements belonging to group 2.
The elements that belongs to s block elements are hydrogen (H), lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). The nature of alkali metals is soft and shiny in appearance. They have low melting point and are highly reactive in nature and usually tarnish when exposed to air. Sodium (Na) is the most reactive element since it's valence electrons are not tightly held together in the atom. The three elements that are highly reactive are Lithium (Li), Sodium (Na), and potassium (K). The elements toward the bottom left corner of the periodic table are the metals that are the most active in the sense of being the most reactive.
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Write a balanced net ionic equation for a neutralization reaction that results in the formation of sodium fluoride.
Balanced net ionic equation for a neutralization reaction that results in the formation of sodium fluoride is Na+ + F- → NaF
What is neutralization reaction?A neutralization reaction is a chemical reaction that occurs when an acid and a base react to form a salt and water. This type of reaction is exothermic, meaning that it releases energy in the form of heat. During a neutralization reaction, hydrogen ions from the acid are neutralized by the hydroxide ions from the base. The byproduct of this reaction is a salt and water. The salt produced depends on the acid and base used in the reaction, and the pH of the solution is neutralized to 7.0.
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When atoms of aluminum-27 are bombarded with alpha particles, a neutron and an element are produced. The particular isotope formed is
An alpha particle bombardment of aluminum with an atomic number of 27 results in the production of a neutron and phosphorus 15. The particular isotope formed is aluminum-28.
Fundamental alterations take place at the level of the atomic nucleus during nuclear reactions. Analyze the properties of the neutron, which has a mass similar to that of a proton but no electric charge. As a result, when it interacts with the aluminum core, the atomic number should remain constant but the atomic mass should rise by one unit. The newly produced atom is in an excited state when it transitions to the base state with the emission of a high-energy radiation called a gamma ray. Aluminum-28 isotope is formed. ⁷A₂₇ + ⁰n₁ → ⁷Al₂₈ˣ
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suppose scientist have found three oxide materials that could potentially be used as a cathode to a magnesium or sodium anode in a battery for electrons plan an investigation to determine the best battery what characteristics did you test for
The sodium is the anode of the cell while the magnesium is the cathode of the cell.
How would the investigation go?We know that in the cell, we are going to have just about two electrodes in the cell and we would have the cathode and the anode. We have to know that the cathode is the point by which the current would enter the cell and the cathode is the point from which the current would leave the cell.
Having said this, we should know that the investigation would have to take into account the reduction potentials of the magnesium as well as that of the sodium as these can be used in the construction of the cell that is under study here.
Hence, by consideration of the electrode potentials, we can see that the sodium would have to act as the anode of the cell and we would keep up with the magnesium as the cathode of the cell.
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Estimate how much heat in joules is released when 25. 0 g of water (C = 4. 184 J/g°C) is cooled from 80. 0°C to 30. 0°C?
The heat in joules is released when 25. 0 g of water (C = 4. 184 J/g°C) is cooled from 80. 0°C to 30. 0°C is -5210 J
To find the amount of heat released when a substance is cooled, we can use the equation:
q = mcΔT
where q is the amount of heat (in joules), m is the mass of the substance (in grams), c is the specific heat capacity of the substance (in joules per gram per degree Celsius), and ΔT is the change in temperature (in degrees Celsius).
Given the information in the question, we have:
m = 25.0 g
c = 4.184 J/g°C
ΔT = 30.0°C - 80.0°C = -50.0°C
So, we can substitute these values into the equation and get:
q = (25.0 g)(4.184 J/g°C)(-50.0°C)
q = -5210 J
Therefore, the amount of heat released when 25.0 g of water is cooled from 80.0°C to 30.0°C is -5210 J.
A negative sign means the heat is absorbed during the cooling process, it is an endothermic process.
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What do these two changes have in common?
a slice of banana turning brown
acid rain weathering a marble statue
Select all that apply.
Both are only physical changes
Both are only chemical changes
Both are caused by heating
Both are caused by cooling
Answer:
both are only physical changes
Answer:both are only chemical
Explanation:
Can you divide equation I by another factor and still have it be correct?
Equation I cannot be divided by another factor as it will introduce errors in the equation.
What are errors?Errors in chemical analysis result when there is a difference between observed value and the true value.If the magnitude of errors is large , it results in decrease in accuracy, reproducibility, and precision.
There are three types of errors:1) random error 2) systematic error 3) human error.The cause of random errors are difficult to quantify while the human errors can be minimized by taking a range of readings to reduce the error.
Errors while measuring boiling point may be human errors while noting down the boiling temperature or instrumental or systematic error if there is a fault in the thermometer.
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Mg + 2HCl --> MgCl2 + H2(g)
Assuming STP, how many moles of hydrogen gas did Carl and his partner collect if they collected 5. 6L?
Curious Carl and his lab partner were conducting a variety of experiments to produce gases: hydrogen, oxygen, and carbon dioxide. In one experiment, they added a piece of magnesium ribbon to 10 milliliters of hydrochloric acid. They observed bubbles being produced and did a variety of tests to identify the escaping gas; it proved to be hydrogen. The reaction is represented by the following equation.
A) 0. 250 moles
B) 2. 78 moles
C) 5. 60 moles
D) 11. 2 moles
5.60 moles of hydrogen gas did Carl and his partner collect if they collected 5. 6L.
Give a brief account on Moles ?The mole, also called Avogadro's number, is a unit of measurement used in chemistry to express the amount of matter. It is defined as the number of entities (atoms, molecules, ions, etc.) in a given sample of matter. The number of mole entities is known as Avogadro's number and is approximately 6,022 x 10²³. Moles can also be used to represent the number of units of matter in a chemical reaction. For example, the equilibrium equation for the reaction of magnesium and hydrochloric acid is Mg + 2HCl → MgCl₂ + H₂. This equation shows that for every mole of magnesium, 2 moles of hydrochloric acid are required to produce 1 mole of magnesium chloride and 1 mole of hydrogen gas.
In summary, a mole is a unit of measurement used in chemistry to describe the amount of substance. It is defined as the number of units in a particular sample of matter and is known as Avogadro's number. It can be used to convert between the mass and number of units of matter, and to describe the number of units of matter in chemical reactions.
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Is it true that only 2 ATP are formed during anaerobic respiration?
Pyruvate is converted to lactate in anaerobic conditions by anaerobic glycolysis. During anaerobic respiration, two ATP molecules are produced.
What is the primary step in glycolysis?
The method by which glucose is metabolized to produce energy is known as glycolysis. It generates water, ATP, NADH, and two pyruvate molecules. It doesn't need oxygen to happen because it happens in a cell's cytoplasm. Both in aerobic and anaerobic organisms, it happens.
How is glycolysis referred to?
Gustav Embden, Otto Meyerhof, & Jakub Karol Parnas identified the Embden-Meyerhof-Parnas (EMP) pathway, which is the most typical kind of glycolysis. The Entner-Doudoroff pathway and several heterofermentative & homofermentative pathways are examples of additional pathways that are included in the term "glycolysis."
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In anaerobic circumstances, anaerobic glycolysis converts pyruvate to lactate. Two ATP molecules are created during anaerobic respiration.
What is the first stage of glycolysis?The process of converting glucose into energy is known as glycolysis. Water, ATP, NADH, and two pyruvate molecules are produced. It does not require oxygen to occur since it occurs in the cytoplasm of a cell. It occurs in both aerobic and anaerobic species.
How is glycolysis defined?The Embden-Meyerhof-Parnas (EMP) route, which is the most common kind of glycolysis, was discovered by Gustav Embden, Otto Meyerhof, and Jakub Karol Parnas. Additional processes included in the word "glycolysis" include the Entner-Doudoroff pathway and numerous heterofermentative and homofermentative pathways.
Here,
Anaerobic glycolysis converts pyruvate to lactate under anaerobic conditions. During anaerobic respiration, two ATP molecules are produced.
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Question 1 For parts of the free-response question that require calculations, clearly show the method used and the steps involved in arriving at your answers. You must show your work to receive credit for your answer. Examples and equations may be included in your answers where appropriate. HCl(aq) + NaOH(aq) + NaCl(aq) + H20(1)
A student was given the task of titrating a 20.mL sample of 0.10MHCl(aq) with 0.10MNaOH(aq). The HCl(aq) was placed in an Erlenmeyer flask. An equation for the reaction that occurs during the titration is given above. (a) According to the equation for the reaction, if the amount of the reactants is halved, how does this affect the amount of H20(I) produced in the reaction?
Titration is a quantitative analysis method for determining the concentration of a substance from a measured titrant. According to the equation, if the reactants are halved, the amount of H2O produced will be halved.
The molecular equations for sodium hydroxide, hydrochloric acid, sodium chloride, and water can be expressed as:
HCl + NaOH ⇒ NaCl + [tex]H_{2}[/tex]O
In the given equations, the spectator ions and the ionic equation can be distinguished as follows:
H⁺ + Cl⁻ Na⁺ + OH⁻ ⇒ Na⁺ + Cl⁻ + 2H⁺ + O⁻²
The net ionic equation is:
H⁺ + OH⁻ ⇒ [tex]H_{2}[/tex]O
From the above equation, we can see that the production of water molecules depends on the number of reactants. The reactants are,
H⁺ and OH⁻.
Therefore, when the number of reactants is halved, the resulting water molecules are halved.
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What are the 3 steps for treating a chemical burn?
Remove dry chemicals. Remove contaminated clothing or jewelry. Bandage the burn. Rinse again if needed.
A chemical burn is infection and destruction of human tissue because of exposure to a chemical, generally with the aid of direct contact with the chemical or its fumes. Chemical burns can occur in the domestic, at work or school, or as a result of an twist of fate or assault. although few humans in the united states of america die after contact with chemical substances in the home, many substances not unusual in both living and garage areas can do extreme damage.
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what percent composition tell you about a molecule
Answer:
tells you by mass what percent of each element is present in a compound.
Explanation:
A balloon originally has 0.100 moles of helium and has a volume of 0.500 L. If 0.670 grams of He are added to the balloon, what will the new volume be, in L
Helium: The new volume of the balloon is 0.6182 L.
Colorless, odourless , tasteless, inert, non-toxic helium is a monatomic gas. It is the lightest element in the periodic table and the second most abundant element in the universe.
The new volume of the balloon can be calculated using the ideal gas law, which states that PV = nRT, where P is the n represents the number cubic moles of gas, V represents the volume, R is the real gases constant, and the temperature is T.
First, we need to calculate the number of moles of helium in the balloon after the additional 0.670 grams have been added:
n = 0.670 g He/4.003 g/mol = 0.167 mol
The total number of moles in the balloon is now 0.267 mol. We can use the ideal gas law to calculate the new volume:
V = (0.267 mol)(0.0821 L·atm/K·mol)(273 K)/1 atm = 0.6182 L
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write the oxidation number of the oxygen atoms in h2o2 and the oxidation number of the oxygen atoms in o2
the oxidation number of the oxygen atoms in h2o2 and the oxidation number of the oxygen atoms in o2 is -1 and 0
An atom's oxidation number (also known as oxidation state) in a chemical is an amount that represents the amount of electron density gained or lost by the atom during in the formation of the compound. In general, the oxidising number of an element in a compound can be determined using the following rules: n element's oxidising number is null whenever it is unrestricted (uncombined). The oxidation number of a polyatomic ion is equivalent towards the ion's charge. We can use these rules to calculate the oxidation number of the oxygen atoms in H2O2 and O2: In H2O2, the oxidation number of the oxygen atoms is -1. This is because the compound is neutral and the hydrogen atoms have an oxidation number of +1, so the oxygen atoms must have an oxidation number of -1 in order for the sum of all the oxidation numbers to be zero. In O2, the oxidation number of the oxygen atoms is 0. This is because the compound is a diatomic molecule and the oxidation number of the free element oxygen is 0.
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Diatomic elements are important. what makes them different from other elemental substances?
Diatomic elements are molecules composed of two atoms of the same element covalently bonded together, as opposed to other elements which are composed of only one atom.
What is diatomic?Diatomic elements are those elements that exist in nature as molecules made up of two atoms. Examples of diatomic elements include oxygen (O2), hydrogen (H2), nitrogen (N2), fluorine (F2), chlorine (Cl2), and iodine (I2). These elements are the only elements that exist naturally as diatomic molecules.
This gives diatomic elements distinct properties compared to other elemental substances, such as having two different electron configurations, and having different spin states. Diatomic elements also have properties that are unique to them, such as having different boiling points, higher densities, and different reactivity. Additionally, diatomic elements are essential for life as many are used in crucial biochemical processes.
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Consider the following equilibrium: Now suppose a reaction vessel is filled with 0. 0406 atm of nitrogen (N_2) and 5. 97 atm of ammonia (NH_3) at 1126. Degree C. Answer the following question this system: Under these conditions, will the pressure of N_2 tend to rise or fall? rise fall Is it possible to reverse this tendency by adding H_2? In other words, if you said the pressure of N_2 will tend to rise, can that be changed to a tendency to fall adding H_2? Similarly, if you said the pressure of N_2 will tend to fall, can that be changed to a tendency to rise by adding H_2? Yes no If you said the tendency can be reversed in the second question, calculate the minimum pressure of H_2 needed to reverse it. Round your answer to 2 significant digits. Atm
Yes, if we add a lot of H₂, the value of K will start falling, which will cause the reaction to move forward. The minimum pressure of H₂ needed to reverse it is 3.598atm.
Describe pressure.The force applied per area is referred to as pressure.
ΔG° = -RT ln(K)
34000 = 8.314(273 + 1126)ln(K)
ln(K) = 2.9231
K = [tex]e^{2.9231}[/tex] = 18.834
Since the container doesn't contain any H₂ gas, K will therefore start out at infinity. The reaction will move in the opposite direction in order to reach equilibrium. Consequently, the pressure of N₂ will initially rise.
Yes, if we add a lot of H₂, the value of K will start falling, which will cause the reaction to move forward.
The answer is therefore yes.
K = (5.97)²/0.0406(PH₂)³
K = 3.598atm.
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Predict the molecular geometries of the following species, respectively: IF3, TeF4, XeF51+.
a. T-shaped, see-saw, square pyramidal
b. trigonal planar, tetrahedral, square pyramidal
c. trigonal pyramidal, tetrahedral, see-saw
d. trigonal planar, see-saw, square planar
e. trigonal pyramidal, square planar, linear
a. T-shaped, see-saw, square pyramidal.IF3: The Lewis structure of IF3 consists of a central I atom, which is surrounded by three F atoms.
IF3: The Lewis structure of IF3 consists of a central I atom, which is surrounded by three F atoms. The three F atoms are arranged in a symmetric, T-shaped geometry.
TeF4: The Lewis structure of TeF4 consists of a central Te atom, which is surrounded by four F atoms. The four F atoms are arranged in a symmetric, trigonal planar geometry.
XeF5+: The Lewis structure of XeF5+ consists of a central Xe atom, which is surrounded by five F atoms. The five F atoms are arranged in a symmetric, square pyramidal geometry.
a. T-shaped, see-saw, square pyramidal.
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A chemistry student needs of glycerol for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student discovers that the density of glycerol is . Calculate the volume of glycerol the student should pour out. Round your answer to significant digit
The student is to weigh out 94.5g of glycerol in accordance with the provided statement.
Glycerol: Is it simply sugar?Glycerin is a kind of carbohydrate known as a polyol, along with other sugar alcohols including sorbitol and erythritol. Glycerin has a complex taste, but unlike sugar I've already discussed—it is not absorbed by the body as sugar and does not raise blood sugar levels. Glycerol may be safe for short-term treatment when taken orally. Headaches, lightheadedness, bloat, nausea, and diarrhea are possible side effects. Glycerol appears to be safe when used topically. It might result in burning, itching, and redness.
1mL = 1cm³
Quantity = 75mL = 75cm³
1.26 g/cm³ is the density.
Mass = ?
Mass is equal to the product of volume and density.
Mass = 1.26 * 75 = 94.5g
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The complete question is-
A chemistry student needs 75.0 mL of glycerol for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student discovers that the density of glycerol is 1.26 g.cm⁻³. Calculate the mass of glycerol the student should weigh out. Be sure your answer has the correct number of significant digits.
How many atoms are in 1.4 moles of Cadmium?
Answer:
Answer Below
Explanation:
Answer: 8.4322×1024atoms atoms are in 1.4 moles of cadmium. Cadmium is present in some foods and is emitted when fossil fuels like as coal and oil is used, smoking cigarettes.
Answer:
The answer is 8.4308 × 10²³ atoms
Explanation:
Multiply by Avogadro's number (Nₐ)
Nₐ = 6.022 × 10²³ mol⁻¹
Now,
1.4 × 6.022 × 10²³ = 8.4308 × 10²³
Thus, 8.4308 × 10²³ atoms are in 1.4 moles of Cadmium.
Which of the following characteristics are true about a typical peptide (amide) bond?
1) The bond is planar.
2) There is free rotation about the carbonyl carbon and nitrogen bond.
3) There is substantial double-bond character to this bond.
4) There is a net negative charge on nitrogen and net positive charge on oxygen.
O Only statements 1, 2, and 4 are correct.
O Only statements 1 and 3 are correct.
O Only statements 2 and 3 are correct.
O All of the listed statements are correct.
The correct answer is:Only statements 1 and 2 are correct.
1) The bond is planar.
2) There is free rotation about the carbonyl carbon and nitrogen bond.
The bond is planar: True, Peptide bond is a planar bond because it is composed of a double bond between the carbonyl carbon and nitrogen, and the atoms on either side of the double bond are sp2 hybridized. There is free rotation about the carbonyl carbon and nitrogen bond: True, the peptide bond between amino acids in a protein is a single bond, which allows for rotation about the bond, this is one reason proteins can adopt many different conformations.There is substantial double-bond character to this bond: False, the peptide bond is actually a single bond, although it has some double-bond character, it is not a double bond.There is a net negative charge on nitrogen and net positive charge on oxygen: False, both nitrogen and oxygen atoms in a peptide bond are neutral, as there is no charge separation in the bond.
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what type of bond is found in chlorine molecules
Answer: It is a Covalent Bond
Explanation:
In a chlorine molecule, the atoms bonded by a covalent bond as a chlorine atom needs one electron to complete its octet and shares one electron with another chlorine atom.
Answer:
mono covalent bonds
Explanation:
Cl shares 1 electron with another Cl atom
so it makes Cl2 a mono covalent compound