Mole conversions/Percent Composition

Mole conversions/Percent Composition

Assessment

Flashcard

Science

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 a mole?

Back

A mole is a unit of measurement in chemistry that represents 6.02 x 10^23 particles (atoms, molecules, ions, etc.).

2.

FLASHCARD QUESTION

Front

How do you convert atoms to moles?

Back

To convert atoms to moles, divide the number of atoms by Avogadro's number (6.02 x 10^23).

3.

FLASHCARD QUESTION

Front

How do you convert grams to moles?

Back

To convert grams to moles, divide the mass of the substance (in grams) by its molar mass (g/mol).

4.

FLASHCARD QUESTION

Front

What is percent composition?

Back

Percent composition is the percentage by mass of each element in a compound.

5.

FLASHCARD QUESTION

Front

How do you calculate percent composition?

Back

Percent composition = (mass of element in 1 mole of compound / molar mass of compound) x 100%.

6.

FLASHCARD QUESTION

Front

What is the molar mass of magnesium (Mg)?

Back

The molar mass of magnesium (Mg) is approximately 24.31 g/mol.

7.

FLASHCARD QUESTION

Front

What is the molar mass of sulfur (S)?

Back

The molar mass of sulfur (S) is approximately 32.07 g/mol.

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