Unit 6-Review The Mole

Unit 6-Review The Mole

Assessment

Flashcard

Chemistry

11th - 12th Grade

Practice Problem

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is the number of moles in 22 grams of carbon dioxide (CO₂)? (Molar mass of CO₂ = 44 g/mol)

Back

0.5 moles

2.

FLASHCARD QUESTION

Front

Which is not an empirical formula?

Back

C₂H₄

3.

FLASHCARD QUESTION

Front

What is an empirical formula?

Back

It is the simplest whole-number ratio of moles of elements in the compound.

4.

FLASHCARD QUESTION

Front

Find the molar mass of CaCO₃.

Back

100 g

5.

FLASHCARD QUESTION

Front

Which one is an empirical formula (cannot be simplified further)?

Back

CaCl₂

6.

FLASHCARD QUESTION

Front

Define molar mass.

Back

Molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol).

7.

FLASHCARD QUESTION

Front

How do you calculate the number of moles from mass?

Back

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

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