CP Chem Exam Review 5

Front

Balance the following equation: Cs + MgF₂ → ?

Back

2, 1, 2, 1

Front

Molar mass represents ______.

Back

the mass of a substance in one mole of that substance

Front

How many moles are in 16.94 g of water?

Back

0.94 mol H₂O

Front

What is the percent composition of carbon in glucose (C₆H₁₂O₆) with a molar mass of 180 g/mol?

Back

40%

Front

Identify the type of reaction: 2NaHCO₃ → Na₂CO₃ + CO₂ + H₂O

Back

decomposition

Front

What is the definition of a mole in chemistry?

Back

A mole is a unit that measures the amount of substance, defined as containing exactly 6.022 x 10²³ entities (atoms, molecules, etc.).

Front

What is the formula for calculating percent composition?

Back

(mass of element in 1 mole of compound / molar mass of compound) x 100%

Front

What is the molar mass of water (H₂O)?

Back

18 g/mol

Front

What is the balanced equation for the combustion of propane (C₃H₈)?

Back

C₃H₈ + 5 O₂ → 3 CO₂ + 4 H₂O

Front

Define a chemical reaction.

Back

A process that leads to the transformation of one set of chemical substances to another.