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Oxidation Numbers
Percentage Composition
Formula and Molar Mass
Naming Compounds
Finding the Formula
100
Name the oxidation number for fluorine.
What is –1 in all compounds?
100

The percentage composition of sulfur in SO2 is about 50%. What is the percentage of oxygen in this compound?

What is 50%?

100

The molar mass of copper is 63.55 g/mol, the molar mass of sulfur is 32.07 g/mol, and the molar mass of oxygen is 16.00 g/mol. Calculate the molar mass of copper(II) sulfate.

What is 159.62 g/mol CuSO4?

100
Name the following binary ionic compound. AlN
What is Aluminum Nitride?
100
What is the formula for zinc fluoride?
What is ZnF2?
200

Name the oxidation number of sulfur in SO2.

What is +4?

200
What is the mass percentage of chlorine in NaCl?
What is 60.7%?
200

Name the formula mass of ethyl alcohol, C2H5OH.

What is 46.08 amu?

200
Write the formula of the compound formed by the two ions. Sn 2+ charge Cl 1- charge
What is Tin (II) Chloride?
200

What is the formula for aluminum sulfate?

What is Al2(SO4)3?

300
Name the three elements that you should know their oxidation number and the correct oxidation numbers.
What is hydrogen +1? What is oxygen -2? What is fluorine -1?
300
What is the percentage composition of CO?
What is 43% C, 57% O?
300

The molar mass of NO2 is 46.01 g/mol. How many moles of NO2 are present in 114.95 g? round to nearest hundredth

What is 2.50 mol?

300
Name the following ionic compound. CuO
What is Copper (II) Oxide?
300

Name the formula for Tin (II) Chloride.

What is SnCl2?

400
In a polyatomic ion, the algebraic sum of the oxidation numbers of all atoms is equal to...
What is the charge of the ion?
400

What is the percentage composition of CuCl2?

What is 47.27% Cu, 52.73% Cl?

400

What is the mass of 0.240 mol glucose, C6H12O6?

What is 43.2 g?

400

Name the compound Zn3(PO4)2.

What is zinc phosphate?

400

What is the formula for the compound formed by lead(II) ions and chromate ions?

What is PbCrO4?

500
Write the chemical formulas for the following compounds and assign oxidation numbers to each element in the compound. Hydrogen Carbonate
What is Oxidation number for Hydrogen +1 Oxidation number for Carbon +2 Oxidation number for Oxygen -2
500

What is the percentage composition of CF4?

What is 13.6% C, 86.4% F?

500

How many OH– molecules are present in 3.00 mol of Ca(OH)2?

What is 3.61x1024?

500

Name the compound Ni(ClO3)2.

What is nickel(II) chlorate?

500

The molecular formula for vitamin C is C6H8O6. What is the empirical formula? 

What is C3H4O3?