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Write a formula for the ionic compound that forms between each pair of elements.

d. potassium and chlorine 

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Write a formula for the ionic compound that forms between each pair of elements.

c. aluminum and sulfur 

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Write a formula for the ionic compound that forms between each pair of elements.

b. sodium and sulfur

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A chemist decomposes samples of several compounds; the masses of their constituent elements are shown below. Calculate the empirical formula for each compound. 

c. 2.128 g Be, 7.557 g S, 15.107 g O

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A chemist decomposes samples of several compounds; the masses of their constituent elements are shown below. Calculate the empirical formula for each compound. 

b. 2.677 g Ba, 3.115 g Br

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Write a formula for the ionic compound that forms between each pair of elements.

a. silver and chlorine

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A chemist decomposes samples of several compounds; the masses of their constituent elements are shown below. Calculate the empirical formula for each compound. 

a. 1.245 g Ni, 5.381 g I

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Calculate the mass (in kilograms) of chlorine in 25 kg of each chlorofluorocarbon (CFC).

d. CF3Cl

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Calculate the mass (in kilograms) of chlorine in 25 kg of each chlorofluorocarbon (CFC).

c. C2F3Cl3

 

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Calculate the mass (in kilograms) of chlorine in 25 kg of each chlorofluorocarbon (CFC).

b. CFCl3

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Calculate the mass (in kilograms) of chlorine in 25 kg of each chlorofluorocarbon (CFC).

a. CF2Cl2

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Based on the molecular views, classify each substance as an atomic element, a molecular element, an ionic compound, or a molecular compound. 

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Classify each compound as ionic or molecular.

a) CF2Cl2

b) CCl4

c) PtO2

d) SO3

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Classify each compound as ionic or molecular.

a) CO2

b) NiCl2

c) Nal

d) PCl3

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Determine the number of moles of oxygen atoms in each sample:

a. 4.88 mol H2O2

b. 2.15 mol N2O

c. 0.0237 mol H2CO3

d. 24.1 mol CO2

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Classify each element as atomic or molecular. 

a) neon

b) fluorine

c) potassium

d) nitrogen

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Write a chemical formula for each molecular model. (See Appendix IIA for color codes.)

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Write a chemical formula for each molecular model. (See Appendix IIA for color codes.)

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Write a chemical formula for each molecular model. (See Appendix IIA for color codes.)

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Write a ratio showing the relationship between the amounts of each element for each compound:

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Write a chemical formula for each molecular model. (See Appendix IIA for color codes.)

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Write a ratio showing the relationship between the amounts of each element for each compound:

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Write a ratio showing the relationship between the amounts of each element for each compound: 

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Write a chemical formula for each molecular model. (See Appendix IIA for color codes.)

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Write a chemical formula for each molecular model. (See Appendix IIA for color codes.) 

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