Unit 8 Practice Test

Unit 8 Practice Test

Assessment

Flashcard

Chemistry

10th - 11th Grade

Practice Problem

Hard

Created by

Wayground Content

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15 questions

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1.

FLASHCARD QUESTION

Front

What is an empirical formula?

Back

An empirical formula represents the simplest whole-number ratio of the elements in a compound.

2.

FLASHCARD QUESTION

Front

How do you calculate the molar mass of a compound?

Back

To calculate the molar mass, sum the atomic masses of all atoms in the molecular formula.

3.

FLASHCARD QUESTION

Front

What is the empirical formula of a compound with 40.05% S and 59.95% O?

Back

SO3

4.

FLASHCARD QUESTION

Front

How many grams are in 2.40 moles of C6H12?

Back

202 g

5.

FLASHCARD QUESTION

Front

What is the molecular formula of Vitamin C?

Back

C6H8O6

6.

FLASHCARD QUESTION

Front

How do you determine the number of moles from grams?

Back

Use the formula: moles = mass (g) / molar mass (g/mol).

7.

FLASHCARD QUESTION

Front

What is the molar mass of calcium hydroxide, Ca(OH)2?

Back

74.10 g/mole

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