Stoichiometry

Name that Reaction

100

Balance: Ca + O₂ → CaO

2Ca + O₂ → 2CaO

200

What type of reaction is: HCl + KOH → KCl + H₂O?

Double Displacement

300

Type of reaction: Al₂O₃ + C → Al + CO₂

Single Displacement

400

What are the products of a combustion reaction?

CO₂ and H₂O

500

Balance: AgNO₃ + MgCl₂ → AgCl + Mg(NO₃)₂

2AgNO₃ + MgCl₂ → 2AgCl + Mg(NO₃)₂

Moles Matter

100

What is the molar mass of water (H₂O)?

18 g/mol

200

How many grams are in 1 mole of CaCl₂?

110.98 g/mol

300

Convert 36.04 g of H₂O to moles.

2.00 mol

400

How many grams are in 0.5 mol of magnesium nitrate?

74.57 g

500

A student has 3.5 mol of CO₂. How many grams is this?

154.03 g

Grams & Names

100

What are the units for molar mass?

g/mol

200

What is the molecular formula for calcium phosphate?

Ca₃(PO₄)₂

300

Grams of dinitrogen tetraoxide from 2.3 mol

211.62 g N₂O₄

400

Grams of 1.9 mol Ca

76.15 g

500

What is the molar mass of copper (II) sulfate

160 g/mol

Show Your Work

100

CO2 + 2LiOH --> Li2CO3 + H2O How many moles of lithium hydroxide are required to react with 20 mol of CO2?

40 mol of LiOH

200

Mg + 2HCl --> MgCl2 + H2 What mass of hydrochloric acid (MM=36.5 g/mol) is needed to react with 2.50 moles of magnesium?

182 g HCl

300

2KClO3 --> 2KCl + 3O2 How many grams of KCl are produced if 5.0 g of KClO3 is decomposed?

3 g KCl

400

How many moles are present in 34 grams of Cu(OH)2?

0.35 mol of Cu(OH)₂

500

Write the complete balanced equation for the following reaction (include states): When lithium hydroxide pellets are added to a solution of hydrogen sulfate, lithium sulfate and water are formed.

2LiOH (s) + H2SO4 (aq) --> Li2SO4 (aq) + 2H2O (l)

Misc

100

This is the coefficient in front of nitrogen gas in the correctly balanced form of the equation: (NH4)NO2 --> N2 + H2O

1

200

6.022 x 10²³ particles/mol

Avogadro's number

300

A conversion factor that relates the amounts in moles of any two substances involved in a chemical reaction.

mole ratio

400

This type of rxn usually results in the formation of a precipitate. It is where one metal swaps his nonmetal with another metal's nonmetal.

double displacement

500

This questions is worth 1000 points! SURPRISE! Chlorine gas reacts with potassium bromide to produce potassium chloride and bromine gas. How many grams of potassium chloride can be produced from 300. g each of chlorine and potassium bromide?

642 g KCl