Chapter 10 Test (The Mole)

Chapter 10 Test (The Mole)

Assessment

Flashcard

Chemistry

10th Grade

Practice Problem

Hard

Created by

Wayground Content

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16 questions

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1.

FLASHCARD QUESTION

Front

The molar mass of an element is the mass of one ____ of the element.

Back

mole

2.

FLASHCARD QUESTION

Front

48.86 g of cobalt is equal to how many moles of cobalt?

Back

.8291 moles

3.

FLASHCARD QUESTION

Front

How many moles are in 3.01 x 10^22 atoms of magnesium?

Back

0.050 moles

4.

FLASHCARD QUESTION

Front

Calculate the molar mass for Al(OH)3.

Back

78.0 g/mol

5.

FLASHCARD QUESTION

Front

What percentage of the total atomic mass of lithium phosphide (Li3P) is composed of phosphorus?

Back

60%.

6.

FLASHCARD QUESTION

Front

Define '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 10^23 particles (atoms, molecules, etc.).

7.

FLASHCARD QUESTION

Front

What is the formula to calculate the number of moles from mass?

Back

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

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