Unit 5: The Mole and Stoichiometry

290 g

Aluminum reacts with sulfuric acid to produce aluminum sulfate and hydrogen gas. How many grams of aluminum sulfate would be formed if 250 g H>2SO>4 completely reacted with aluminum?

4.5 * 10^22

How many atoms are in 0.075 mol of titanium?

0.8 mol

How many moles of aluminum are needed to react completely with 1.2 mol of FeO? 2Al(s) + 3FeO(s) -> 3Fe(s) + Al>2O>3(s)

8.0 * 10^1 moles

How many moles of tungsten atoms are in 4.8 * 10^25 atoms of tungsten?

3

If 1 egg and 1/3 cup of oil are needed for each bag of brownie mix, how many bags of brownie mix do you need if you want to use up all 3 eggs and 1 cup of oil?

1:2

In the reaction 2CO(g) + O>2(g) -> 2CO>2(g), what is the ratio of moles of oxygen used to moles of CO>2 produced?

stoichiometry

The calculation of quantities in chemical equations is called

2.00 g

The equation below shows the decomposition of lead nitrate. How many grams of oxygen are produced when 11.5 g NO is formed? 2Pb(NO>3)>2(s) -> 2PbO(s) + 4NO>2(g) + O>2 (g)

convert given quantities to moles

The first step in most stoichiometry problems is to

mass, moles, molecules, and volume

What is conserved in the reaction shown below? H>2(g) + Cl>2(g) -> 2HCl(g)

673

What is the mass in grams of 5.90 mol C>8H>18?

303.6 g

What is the molar mass of AuCl>3?

4.0 mol

What is the number of moles of beryllium atoms in 36 g of Be?

9 moles of reactants chemically change into 11 moles of product.

Which of the following is true about the total number of reactants and the total number of products in the reaction shown below? C>5H>12(l) + 8O>2(g) -> 5CO>2(g) + 6H>2O(g)