Percent Composition by Mass

Percent Composition by Mass

Assessment

Flashcard

Chemistry

10th - 12th Grade

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What is Percent Composition by Mass?

Back

Percent Composition by Mass is the percentage by mass of each element in a compound, calculated by dividing the mass of the element by the total mass of the compound and multiplying by 100.

2.

FLASHCARD QUESTION

Front

How do you calculate Percent Composition by Mass?

Back

Percent Composition by Mass = (Mass of Element / Total Mass of Compound) x 100.

3.

FLASHCARD QUESTION

Front

What is the percent composition of an element in a compound with a total mass of 100g and the element's mass is 28.83g?

Back

Percent Composition = (28.83g / 100g) x 100 = 28.83%.

4.

FLASHCARD QUESTION

Front

If a compound has a total mass of 200g and an element's mass is 56.93g, what is the percent composition of that element?

Back

Percent Composition = (56.93g / 200g) x 100 = 28.465%.

5.

FLASHCARD QUESTION

Front

What is the percent composition of an element if its mass is 14.24g in a compound with a total mass of 100g?

Back

Percent Composition = (14.24g / 100g) x 100 = 14.24%.

6.

FLASHCARD QUESTION

Front

Which choice is the formula for calculating percent by mass?

Back

Percent by Mass = (Mass of Component / Total Mass) x 100.

7.

FLASHCARD QUESTION

Front

If a compound has a total mass of 150g and an element's mass is 36.35g, what is the percent composition of that element?

Back

Percent Composition = (36.35g / 150g) x 100 = 24.23%.

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