Stoich

Stoich

Assessment

Flashcard

Chemistry

10th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is stoichiometry?

Back

Stoichiometry is the branch of chemistry that deals with the calculation of reactants and products in chemical reactions based on the conservation of mass.

2.

FLASHCARD QUESTION

Front

What is a mole ratio?

Back

A mole ratio is a ratio that shows the relative amounts of moles of reactants and products in a chemical reaction.

3.

FLASHCARD QUESTION

Front

In the reaction N2 + 3 H2 → 2 NH3, what is the mole ratio of N2 to NH3?

Back

1 mole N2 : 2 moles NH3.

4.

FLASHCARD QUESTION

Front

What is a limiting reactant?

Back

The limiting reactant is the substance that is completely consumed in a chemical reaction, limiting the amount of product formed.

5.

FLASHCARD QUESTION

Front

What is an excess reactant?

Back

The excess reactant is the substance that is not completely used up in a chemical reaction.

6.

FLASHCARD QUESTION

Front

How do you determine the limiting reactant in a reaction?

Back

To determine the limiting reactant, compare the mole ratio of the reactants used in the reaction to the mole ratio in the balanced equation.

7.

FLASHCARD QUESTION

Front

What is the mole ratio of water to oxygen in the reaction 4NH3 + 5O2 → 4NO + 6H2O?

Back

6 moles H2O : 5 moles O2.

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