HCHO2, a weak acid (Ka = 2E-4), dissociates in water according to the equation above. Which of the following provides the best estimate of the pH of 0.5 M HCHO2 and identifies the species at the highest concentration (excluding H2O) in the solution?
Answers
To estimate the pH of a solution of 0.5 M HCHO₂ (formic acid) and identify the species at the highest concentration (excluding water), we need to consider the dissociation of the weak acid HCHO₂ and its equilibrium concentration. The best estimate of the pH of the 0.5 M HCHO₂ solution is approximately 2. And, HCHO₂ is the species at the highest concentration in the solution.
The dissociation equation for formic acid (HCHO₂) can be written as follows:
HCHO₂ ⇌ H+ + CHO₂-
The equilibrium constant for this dissociation reaction is given as Ka = [H+][CHO₂--]/HCHO₂]. From the given value of Ka (2E-4), we can assume that the dissociation of HCHO₂ is relatively small, indicating that most of it remain as the undissociated acid.
Since the concentration of HCHO₂ is 0.5 M, we can assume that it remains approximately unchanged during dissociation. Therefore, the concentration of HCHO₂ can be considered as the initial concentration, which is 0.5 M.
To estimate the pH of the solution, we need to determine the concentration of H+ ions. Since HCHO₂ dissociates into H+ and CHO₂-, the concentration of H+ is equal to the concentration of dissociated HCHO₂.
[H+] = [CHO2-]
Using the equilibrium constant expression for the dissociation of HCHO₂, we have:
Ka = [H+][CHO₂-]/[HCHO₂]
Since [H+] = [CHO₂-], we can rewrite the expression as:
Ka = [H+]^2/[HCHO₂]
Solving for [H+], we get:
[H+] = sqrt(Ka * [HCHO₂])
Substituting the given values:
[H+] = sqrt(2E-4 * 0.5)
[H+] ≈ sqrt(1E-4)
[H+] ≈ 1E-2
Taking the negative logarithm (base 10) of the concentration of H+ ions, we can determine the pH:
pH ≈ -log10(1E-2)
pH ≈ -(-2) = 2
Therefore, the best estimate of the pH of the 0.5 M HCHO₂ solution is approximately 2.
To identify the species at the highest concentration (excluding water) in the solution, we can conclude that the undissociated formic acid (HCHO₂) is present in the highest concentration because the dissociation of HCHO₂ is relatively small.
Therefore, HCHO₂ is the species at the highest concentration in the solution.
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Related Questions
4. Which of the following nuclear equations has an incorrect characterization?
a) Bi+a → At+2n; fission
b) H+H → He +n; fusion
c) N+aO+p; bombardment
d) 234Th → +Pa; decay
Answers
Nuclear equation which has incorrect characterization is \(\rm ^{209}_{83}Bi +\rm ^{4}_{2} \alpha \--- > \rm ^{211}_{85}At + 2 \rm ^{1}_{0}n; fission\).
Fission is the process in which the nucleus of the atom splits into two more daughter nuclei. It was discovered by a German chemist named, Otto Hahn in 1938.
Spontaneous fission was discovered by Flyorov in 1940.
Energy is released during nuclear fission. As the heavy nuclei, breaks down into the lighter species. In a typical nuclear fission reaction, more than one neutron is released by each dividing nucleus.
The transformation which is occurring in the given reaction is not the fission hence this is the incorrect characterization.
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Which is one source of the sediments that form sedimentary rocks?
Answers
Answer:
Sandstone, limestone, and shale
Explanation:
The rocks are most likely to start as sediments carried in rivers and end up in lakes and oceans
Answer:
D - materials dissolved in solutions
Explanation:
EDGE 2021
If you burn 39.3 g of hydrogen and produce 351 g of water, how much oxygen reacte?
Answers
The amount of oxygen reacted can be calculated by subtracting the mass of hydrogen from the mass of water, which gives 351 g - 39.3 g = 311.7 g of oxygen reacted.
In the given reaction, hydrogen reacts with oxygen to produce water. From the provided information, we can infer that the entire mass of hydrogen has reacted to form water. Since the molar ratio between hydrogen and oxygen in the reaction is 2:1, we know that the mass of oxygen reacted will be twice the mass of hydrogen.
The molar mass of hydrogen is approximately 1 g/mol, and the molar mass of oxygen is approximately 16 g/mol. Therefore, the mass of oxygen reacted can be calculated as follows:
Mass of hydrogen = 39.3 g
Mass of oxygen reacted = 2 * Mass of hydrogen = 2 * 39.3 g = 78.6 g
However, the given information states that 351 g of water is produced. The molar mass of water is approximately 18 g/mol. Using the molar mass ratio of oxygen in water (16 g/mol) to the molar mass of water (18 g/mol), we can find the mass of oxygen reacted:
Mass of oxygen reacted = (Mass of water - Mass of hydrogen) = 351 g - 39.3 g = 311.7 g.
Therefore, 311.7 g of oxygen reacted to produce 351 g of water when 39.3 g of hydrogen was burned.
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Rock denotation in science
Answers
Answer:
I think you meant rock defination in science
Explanation:
A rock is any naturally occurring solid mass or aggregate of minerals or mineraloid matter. It is categorized by the minerals included, its chemical composition and the way in which it is formed. Rocks are usually grouped into three main groups: igneous rocks, metamorphic rocks and sedimentary rocks.
or
A rock is a solid made up of a bunch of different minerals. Rocks are generally not uniform or made up of exact structures that can be described by scientific formulas. Scientists generally classify rocks by how they were made or formed. There are three major types of rocks: Metamorphic, Igneous, and Sedimentary.
In the addition reaction of HCl to 2-methyl-2-butene, what is the first mechanistic step? a)The pi electrons of the double bond attack the H of HCl (and the H-to-Cl bond cleaves); this attack adds the H to C3 and creates a carbocation at C2 O b)The pi electrons of the double bond attack the H of HCl (and the H-to-Cl bond cleaves); this attack adds the H to C2 and creates a carbocation at C3 c) Chloride ion attacks carbon 3 (C3) d)A hydride ion abstracts one of the 2-methyl hydrogens (as a proton) e)Chloride ion attacks carbon 2 (C2) f)The 2-methyl group leaves to create a carbocation g)As the pi electrons attack the H of HCl (which adds the H to C2), the Cl attacks C3 in a 4-center, 4-electron process. h)As the pi electrons attack the H of HCl (which adds the H to C3), the Cl attacks C2 in a 4-center, 4-electron process.
Answers
The pi electrons of the double bond attack the H of HCl (and the H-to-Cl bond cleaves); this attack adds the H to C3 and creates a carbocation at C2.
The correct answer is, A.
In the addition reaction of HCl to 2-methyl-2-butene, the first mechanistic step involves the pi electrons of the double bond attacking the H of HCl. This attack causes the H-to-Cl bond to cleave, resulting in the addition of the H to C3 and the creation of a carbocation at C2. This is a common first step in the addition of a hydrogen halide to an alkene or alkyne.
In this reaction, the pi electrons of the double bond between C2 and C3 in 2-methyl-2-butene attack the hydrogen atom in HCl, causing the H-to-Cl bond to break. This results in the addition of the hydrogen atom to C2, creating a carbocation at C3. The carbocation is more stable at C3 due to the methyl group on C2, which provides extra stability through hyperconjugation. The next step in the mechanism would involve the nucleophilic attack of the chloride ion on the carbocation at C3.
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The average bond dissociation energy of a carbon-carbon bond is 410 kj/mol. What wavelength in nanometers of ultraviolet radiation has an energy of 410 kj/mol?.
Answers
A carbon-carbon bond has an average bond dissociation energy of 410 kj/mol. The energy of UV radiation at wavelength 292 in nanometers is 410 kj/mol.
What do you mean by wavelength?The wavelength of a wave is the separation between its two crests or troughs. In the direction of the wave is measured.
The wavelength of a wave is the distance it travels between its crests and troughs (which may be an electromagnetic wave, a sound wave, or the any other wave). The peak of a wave is at its crest, and its trough is at its top. It is given in length units like meters, centimeters, millimeters, and nanometers because wavelength is a measurement of both length and distance.
Light's wavelength changes with color, meaning that it differs for each hue. Violet has the shortest wavelength while red has longest. Compared to violet light, UV radiation has a shorter wavelength. In a similar vein, infrared energy has a larger wavelength than red light.
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x and Z are elements in Period 3.They form the compound 2x_(2) ,which has the Lewis structure shown here. Identify elements x and Z
Answers
According to the Lewis Structure, X could be Boron or Aluminum and Z could be Carbon or Silicon.
We need to identify the elements whose atoms have two and four valence electrons, respectively. The elements in period 3 that have two valence electrons are B (Boron) and Al (Aluminum), while those with four valence electrons are C (Carbon) and Si (Silicon).
Since X has two dots around it, it is either Boron (B) or Aluminum (Al).On the other hand, since Z has four dots, it is either Carbon (C) or Silicon (Si).
Therefore, the elements X and Z are either Boron and Carbon (BC) or Aluminum and Silicon (AlSi).
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Which alkane is the isomer of butane called 2-methylpropane? A skeletal model of a 4-carbon chain has a straight line extending from the second and third carbons in the chain. A three-carbon chain has a straight line extending from the center carbon. A 5-carbon chain. A three-carbon chain has 2 lines extending from the same side of the center carbon.
Answers
Answer:
A three-carbon chain has a straight line extending from the center carbon.
Explanation:
Isomers are compounds having the same molecular formula but different structural formulas.
Butane and 2-methylpropane are constitutional isomers. Constitutional isomers differ in the way that the constituent atoms are connected to each other.
Butane is a straight chain compound while the compound 2-methylpropane consists of a three-carbon chain which has a straight line extending from the center carbon.
Answer:
it is b on edge 2021
Explanation:
Which examples are part of the hydrosphere?
Answers
Answer:
some water trapped under the earth
Explanation:
The hydrosphere includes water that is on the surface of the planet, underground, and in the air.
Answer:
C and D
Explanation:
The hydrosphere consists of anything to do with water, so a large glacier and some water trapped in the earth are examples of parts of the hydrosphere.
how much energy is needed to convert 120g of ice at -35°C to steam at 150°C?
Answers
Calculate the mL/hr to set the IV pump to infuse a loading dose
of magnesium sulfate that is supplied as 4g in 250mL LR over 20
min.
Answers
To infuse the loading dose of magnesium sulfate supplied as 4g in 250mL LR over 20 minutes, you would set the IV pump to an infusion rate of 750 mL/hr.
To calculate the mL/hr rate for infusing a loading dose of magnesium sulfate supplied as 4g in 250mL of LR (Lactated Ringer's) solution over 20 minutes, we need to convert the infusion time to hours and then determine the infusion rate.
First, let's convert the infusion time of 20 minutes to hours:
20 minutes = 20/60 hours = 1/3 hours (since there are 60 minutes in an hour).
Next, we can calculate the mL/hr rate using the following formula:
Infusion rate (mL/hr) = Total volume (mL) / Infusion time (hours)
In this case, the total volume is 250mL, and the infusion time is 1/3 hours.
Infusion rate (mL/hr) = 250mL / (1/3) hours
To divide by a fraction, we can multiply by the reciprocal of the fraction:
Infusion rate (mL/hr) = 250mL * (3/1) hours
Calculating the product:
Infusion rate (mL/hr) = 750mL/hr.
Therefore, to infuse the loading dose of magnesium sulfate supplied as 4g in 250mL LR over 20 minutes, you would set the IV pump to an infusion rate of 750 mL/hr.
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HELP ASAP !!!!!
While eating from a can of mixed nuts, you wonder about the ratio of almonds to cashews.
Describe how you would determine the percentage of almonds and the percentage of cashews in the can.
Answers
Answer:
Explanation:
Take a random sample of nuts from the jar. Let's take two handfuls, after shaking the jar and mixing the nuts thoroughly. Separate the nuts into almonds and cashews. Count each pile, then do the following calculation (these numbers are random, for example only).
Count Percentage %
Almonds 38 (38)/(87)x100
Cashews 49 49/87x100
87 87/87 = 100%
Ratio of Almonds to Cashews: 38/49
The percentage of almonds and the percentage of cashews in the can is 100 %. Ratio of Almonds to Cashews is 38/49.
What do you mean by percentage ?A percentage is essentially a part per hundred. It can be expressed in both fraction and decimal form. For example, 25% refers to 25 out of 100. In decimal form, 25% is equivalent to the fraction 25/100 or 0.4.
Take a sample of nuts at random from the jar. Let's take two handfuls after shaking the jar and thoroughly mixing the nuts. Separate the nuts into two groups: almonds and cashews. Count each pile, then perform the calculation below (these numbers are random, for example only).
Count Percentage %
Almonds 38
= (38)/(87)x100
Cashews 49
= 49/87x100
= 87/87
= 100%
Ratio of Almonds to Cashews: 38/49
Thus, The percentage of almonds and the percentage of cashews in the can is 100 %. Ratio of Almonds to Cashews is 38/49.
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What is the correct formula when Ca+2 is combined with PO4-3
Answers
When Ca+2 is combined with PO4-3, the correct formula is Ca3(PO4)2 to achieve electrical neutrality.
Calcium (Ca) is a metal with a charge of +2, indicated by the +2 superscript. Phosphate (PO4) is a polyatomic ion with a charge of -3, indicated by the -3 superscript. In order to form a neutral compound, the charges of the ions must balance each other.
To achieve electrical neutrality, three Ca+2 ions are needed to balance the charge of two PO4-3 ions. Each Ca+2 ion has a charge of +2, so three Ca+2 ions contribute a total charge of +6. Similarly, each PO4-3 ion has a charge of -3, so two PO4-3 ions contribute a total charge of -6. Therefore, the compound Ca3(PO4)2 ensures that the charges are balanced, resulting in a neutral compound.
In the formula, the subscripts indicate the number of atoms present in the compound. There are three calcium ions (Ca) and two phosphate ions (PO4) present in the compound. The formula Ca3(PO4)2 represents the combination of calcium and phosphate ions in the correct ratio to maintain electrical neutrality.
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At what temperature do NaNO3 and KNO3 have the same solubility?
Answers
Answer:
70°C,130.9 ................,...
Which are effects of long-term exposure to mustard gas? Select all that apply. One, some, or all responses may be correct.
Answers
The effects of long-term exposure to mustard gas causes mortality and chronic respiratory disease.
Exposure to mustard gas in the long term can result in mortality from influenza, pneumonia as well as chronic breathing disease. Exposure for long term leads to respiratory complications and septic shock. Extensive breathing in the environment of mustard gas can cause chronic respiratory disease, respiratory infections or death.
Extensive eye exposure to this gas can cause permanent blindness. Exposure to mustard gas may also increase the chances of lung and respiratory cancer so we can conclude that mustard gas is lethal and can cause a number of diseases in a person who is exposed to it.
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how will you increase the solubility of oxygen in water? the partial pressure of oxygen ( p0 , ) is 0.21 atm in air at i atm (pext).
Answers
The partial pressure of oxygen is 0.21 atm in air. The solubility of oxygen in water can be increased by increasing temperature.
A solution is a liquid that is a homogenous mixture of one or more solutes in a solvent. A simple approach is to add sugar cubes to a cup of tea or coffee. Solubility is the property that allows sugar molecules to dissolve. As a result, solubility can be defined as a substance's (solute's) ability to dissolve in a specific solvent. A solute is any substance that can be solid, liquid, or gas when dissolved in a solvent. The partial pressure of oxygen is 0.21 atm in air. The solubility of oxygen in water can be increased by increasing temperature.
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A compound is composed of 79.4% carbon, 8.9% hydrogen, and 11.7% oxygen by weight. If it has a molar mass of 272 g/mol, what is its molecular formula?
Answers
Determine the empirical formula:
Assume we have 100g of the compound, then:
Carbon = 79.4g
Hydrogen = 8.9g
Oxygen = 11.7g
Next, we need to convert the masses of each element to moles:
Carbon: 79.4g / 12.01 g/mol = 6.62 mol
Hydrogen: 8.9g / 1.01 g/mol = 8.81 mol
Oxygen: 11.7g / 16.00 g/mol = 0.73 mol
The empirical formula is the simplest whole-number ratio of the atoms, so we need to divide each mole value by the smallest mole value:
Carbon: 6.62 mol / 0.73 mol = 9.06 ≈ 9
Hydrogen: 8.81 mol / 0.73 mol = 12.06 ≈ 12
Oxygen: 0.73 mol / 0.73 mol = 1
The empirical formula is C9H12O.
Calculate the molecular formula:
To calculate the molecular formula, we need to know the molar mass of the empirical formula. The molar mass of C9H12O is:
(9 x 12.01 g/mol) + (12 x 1.01 g/mol) + (1 x 16.00 g/mol) = 136.11 g/mol
We can calculate the ratio of the molar mass of the molecular formula to the molar mass of the empirical formula:
Molecular mass / Empirical mass = 272 g/mol / 136.11 g/mol = 2
This means that the molecular formula is twice the size of the empirical formula, so we can multiply the subscripts of the empirical formula by 2 to get the molecular formula:
C9H12O x 2 = C18H24O2
Therefore, the molecular formula of the compound is C18H24O2.
Which chemical formula shows a covalent compound?
NaCl
HBr
MgO
CO2
Answers
Answer:
CO2
Explanation:
A covalent compound is a compound between 2 nonmetals. For this reason, NaCl and MgO can be eliminated since both contain metals. While neither H nor Br are metals, in HBr H is acting as a metal. CO2 is the only choice containing both nonmetals, with both elements acting like nonmetals as well.
What is the correct chemical formula for hexachlorostannate (IV) ion?
Answers
The correct chemical formula for hexachlorostannate (IV) ion is SnCl6^2-.
The hexachlorostannate (IV) ion is an inorganic compound that consists of a central tin (Sn) atom surrounded by six chlorine (Cl) atoms. The charge on the ion is 2-, which indicates that there are two extra electrons present. The (IV) in the name refers to the oxidation state of the tin atom, which is +4. The chemical formula for hexachlorostannate (IV) ion is therefore SnCl6^2-.
the third law of thermodynamics describes the entropy of a: select the correct answer below: solid liquid gas all of the above
Answers
The third law of thermodynamics describes the entropy of a: solid.
The third law of thermodynamics states that the entropy of a pure crystalline substance approaches zero as the temperature approaches absolute zero (0 Kelvin or -273.15 degrees Celsius). This law implies that at absolute zero, a perfectly ordered and pure crystalline solid will have zero entropy.
The third law of thermodynamics is not specific to liquids or gases but applies to solids. In a solid, the molecules are highly ordered and have fixed positions in a regular lattice structure. As the temperature decreases towards absolute zero, the thermal motion of the molecules reduces, and the system becomes more ordered, resulting in a decrease in entropy.
In contrast, liquids and gases have higher entropy compared to solids at absolute zero because their molecules have more freedom of movement and are not as tightly arranged. Therefore, the third law of thermodynamics specifically addresses the entropy of solids and does not apply to liquids or gases.
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even though ca(oh)2 is an inexpensive base, its limited solubility restricts its use. what is the ph of a saturated solution of ca(oh)2?
Answers
According to the concept of solubility, the pH of saturated solution of calcium hydroxide is 9.
What is solubility?Solubility is defined as the ability of a substance which is basically solute to form a solution with another substance. There is an extent to which a substance is soluble in a particular solvent. This is generally measured as the concentration of a solute present in a saturated solution.
The solubility mainly depends on the composition of solute and solvent ,its pH and presence of other dissolved substance. It is also dependent on temperature and pressure which is maintained.Concept of solubility is not valid for chemical reactions which are irreversible. The dependency of solubility on various factors is due to interactions between the particles, molecule or ions.
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What kind of information do unit conversions give?
A. Unit conversions give the size of one part of something.
B. Unit conversions give a fractional part of a number.
C. Unit conversions give an equal amount but with other units.
O D. Unit conversions express a number in terms of moles.
Answers
The diagram shows the cycling of matter in the interior of Earth.
Which statement correctly explains the cycling of matter in the interior of Earth?
Responses
The heat from Earth’s core causes material in the area under the crust to become less dense and rise, while more dense material sinks.
The heat from Earth’s core causes material in the area under the crust to become less dense and rise, while more dense material sinks.
The heat from Earth’s core causes material in the area under the crust to become more dense and rise, while less dense material sinks.
The heat from Earth’s core causes material in the area under the crust to become more dense and rise, while less dense material sinks.
The heat from Earth’s core causes material in the area under the crust to become less dense and sink, while more dense material rises.
The heat from Earth’s core causes material in the area under the crust to become less dense and sink, while more dense material rises.
The heat from Earth’s core causes material in the area under the crust to become more dense and sink, while less dense material rises.
The heat from Earth’s core causes material in the area under the crust to become more dense and sink, while less dense material rises.
Answers
Answer:
Explanation:
I think 'The heat from Earth's core causes material in the area under the crust to become denser and rinse, while less dense material sinks.
PLEASE HELPNIM STUCK
Answers
Answer:
I think its C
Explanation: cuz the pictures indicate that is returns to "normal" last.
HELLLLLLPPPPP
What type of circuit does this figure represent?
an open series circuit
an open parallel circuit
a closed parallel circuit
a closed series circuit
Electricity and magnetism
Answers
Answer:
a closed series circuit
Answer:
An open series circuit
Explanation:
I'm late but for future people...
I took the test.
A __________________ election is the type of election in which candidates from the same party compete against one another to try to win the party's nomination.
Answers
A primary election is the type of election in which candidates from the same party compete against one another to try to win the party's nomination.
A formal procedure of communal decision-making, an election that's how a population chooses a person or people to hold public office.
A general election would be one that takes place simultaneously throughout all constituencies, usually the day before or within a few days. When a member dies or resigns, elections may be conducted just for that constituency to replace the vacancy.
For positions with fixed terms, such as that of the president, governor, or legislator, primaries are frequently held. There are normally no special primaries for positions that could be replaced without holding a new election, including such a prime minister.
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A cycle consists of a carefully balanced set of molecules. In order for the cycle to continue, this balance must be maintained. How many turns of the calvin cycle must occur before one molecule of g3p can leave?.
Answers
The Calvin cycle must occur before the molecule exits g3p is 3.
Three Calvin cycles are required to make the G3P molecule. This allows the G3P molecule to break out of the cycle and continue making glucose. All three requirements are required:
Chlorophyll pigments, chloroplast "theater" and enzyme catalysis. In the first stage, it converts light energy into chemical energy, which until then is stored in ATP and NADPH molecules.
In the second step of the Calvin Cycle, the carbon-fixed 3-PGA molecule is converted to the monosaccharide molecule glyceraldehyde-3-phosphate. This stage uses energy from ATP and NADPH produced in the light-dependent reactions of photosynthesis. The Calvin cycle harnesses the chemical energy of ATP and reduces the power of NADPH from a light-dependent reaction to produce tricarbonate.
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A sample of helium gas is allowed to expand in a process that is adiabatic and quasistatic. As the gas cools from 105 degree C to 101 Degree C, it does 3.05 J of work on a piston. How many helium atoms are there in the sample?
Answers
According to the question, helium atoms are there in the sample is (3.05 J/P) / (R × (105 + 273.15 K)) × 6.02 x 10²³ atoms/mol.
What is helium atoms?Helium atoms are the second most abundant type of atom in the universe. They are the simplest of all atoms, consisting of only two protons and two neutrons. Helium atoms are extremely lightweight, with an atomic weight of only four, making them the second lightest element after hydrogen.
The number of helium atoms in the sample can be calculated using the ideal gas law: n = PV/RT
where n is the number of moles, P is the pressure, V is the volume, R is the ideal gas constant, and T is the temperature.
Since the process is adiabatic and quasistatic, the pressure and volume of the sample can be determined from the work done on the piston:
W = P(V2 - V1)
where W is the work done, V2 is the final volume, and V1 is the initial volume.
Since the work done is 3.05 J, the final volume is 3.05 J/P. The initial volume can be determined from the ideal gas law, using the initial temperature of 105°C and the number of moles (which is unknown).
n = PV1/RT1
where n is the number of moles, P is the pressure, V1 is the initial volume, R is the ideal gas constant, and T1 is the initial temperature.
Substituting the values into the ideal gas law, we can solve for the number of moles: n = (3.05 J/P) / (R × (105 + 273.15 K))
Once the number of moles is determined, the number of helium atoms can be calculated by multiplying by Avogadro's number.
N = n × 6.02 x 10²³ atoms/mol
Therefore, the number of helium atoms in the sample is:
N = (3.05 J/P) / (R × (105 + 273.15 K)) × 6.02 x 10²³ atoms/mol.
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Calculate the mass (in g) of 2.1 x 1020 atoms of Os.
Answers
Answer:
here's the procedure to find it friend
Explanation:
How do you find the mass in grams of an atom?
In order to determine the mass of one atom of an element, you must determine its molar mass, which is its atomic weight on the periodic table in g/mol, and you need to know the relationship between moles and the number of atoms: 1 mol of atoms = 6.022×1023 atoms . Then divide the molar mass by 6.022×1023 atoms/mol .
ANSWER FAST
Ozone (O3) is made of three atoms of oxygen. It is _____.
a mixture
an ion
a molecule
an element