MOLES

GFMs

100

This is the gram-formula mass of gold.

What is 197 g/mol?

200

This is the gram-formula mass for H₂S_(g)

What is 34 g/mol ?

300

This is the gram-formula mass for molecular nitrogen, N_2(g)

What is 28 g/mol?

400

This is the gram-formula mass for aluminum oxalate, Al₂(C₂O₄)_3(s)

What is 318 g/mol?

500

This is the gram-formula mass for CuSO₄*5H₂O ?

What is 250 g/mol ?

Mole-Gram & Gram-Mole

100

This is the number of grams in 0.35 moles of Ar_(g)

What is 14 grams?

200

This is the number of moles in 150 grams of KF_(s)

What is 2.59 moles?

300

This is the number of grams in 0.25 moles of calcium chloride

What is 19.5 grams?

400

This is the number of moles in 7.5 grams of Ca(OH)_2(s)

What is 0.10 moles?

500

This is the number of grams in 0.15 moles of ammonium sulfate

What is 19.8 grams?

Mole-Gram & Gram-Mole II

100

This is the number of moles in 8.8 grams of Fe(s)

What is 0.16 moles?

200

This is the number of grams in 1.75 moles of CO₂(g)

What is 77 grams?

300

This is the number of moles in 88 grams of potassium sulfide

What is 0.8 moles?

400

This is the number of grams in 0.005 moles of (NH₄)₂O_(s)

What is 0.26 grams?

500

This is the number of moles in 15.5 grams of copper (II) thiocyanate

What is 0.09 moles?

% Composition

100

This is the percent composition of nitrogen in NH_3(g)

What is 82% ?

200

This is the percent composition of carbon in CO(g)

What is 43% ?

300

This is the percent composition of hydrogen in (NH₄)₂S_(s)

What is 12% ?

400

This is the percent composition of oxygen in aluminum carbonate

What is 62% ?

500

This is the percent composition of water in CuSO₄5H₂O

What is 36% ?

Extra Moles

100

This is the empirical formula of C₅H₁₀

What is CH₂ ?

200

These are the coefficients in the unbalanced equation below:

___N₂ + ___H₂ --> ___NH₃

What is:

1N₂ + 3H₂ --> 2NH₃

300

This is the type of reaction that the following chemical equation represents:

NaF + Cl₂ --> NaCl + F₂

What is single replacement?

400

This is the type of reaction that the following chemical equation represents:

AgMnO₄ --> Ag + MnO₂ + O₂

What is decomposition?

500

An unknown substance has a gram-formula mass of 84 grams per mole, and an empirical formula of CH_2.  This is its molecular formula.

What is C₆H₁₂ ?