Stoichiometry Flashcard

Stoichiometry Flashcard

Assessment

Flashcard

Chemistry

10th Grade

Practice Problem

Hard

Created by

Wayground Content

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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 in chemistry?

Back

A mole is a unit of measurement used to express amounts of a chemical substance, defined as exactly 6.022 x 10²³ particles (atoms, molecules, etc.).

3.

FLASHCARD QUESTION

Front

How do you calculate the number of moles from mass?

Back

Number of moles = mass (g) / molar mass (g/mol).

4.

FLASHCARD QUESTION

Front

What is the balanced equation for the combustion of hydrogen?

Back

2 H₂ + O₂ → 2 H₂O.

5.

FLASHCARD QUESTION

Front

What is the mole ratio in a balanced chemical equation?

Back

The mole ratio is the ratio of the coefficients of the reactants and products in a balanced chemical equation, used to convert between moles of different substances.

6.

FLASHCARD QUESTION

Front

How many moles of water are produced from 8 moles of hydrogen in the reaction 2 H₂ + O₂ → 2 H₂O?

Back

8 moles of water are produced.

7.

FLASHCARD QUESTION

Front

What is the molar mass of magnesium nitrate, Mg(NO₃)₂?

Back

The molar mass of Mg(NO₃)₂ is 148.313 g/mol.

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