Unit 4 Stoichiometry Review

Front

What is the right part of a chemical equation called?

Back

Products

Front

Is the equation 2H2 + O2 --> 2H2O balanced?

Back

No

Front

What are the units for molar mass?

Back

grams/mole

Front

If 195 grams of ethane (C2H6) combusted with excess oxygen, how many grams of CO2 were produced in the reaction 2 C2H6 + 7 O2 → 4 CO2 + 6 H2O?

Back

572 grams of CO2

Front

Given that the molar mass of CO2 is 44.01 g/mol, what is the percent composition of carbon?

Back

27.29%

Front

What is stoichiometry?

Back

The calculation of reactants and products in chemical reactions.

Front

What is a balanced chemical equation?

Back

An equation where the number of atoms for each element is the same on both sides.

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.

Front

How do you calculate the molar mass of a compound?

Back

Add the atomic masses of all atoms in the formula.

Front

What is the significance of coefficients in a chemical equation?

Back

They indicate the number of moles of each substance involved in the reaction.