Unit 5 Test Mole Concept

Unit 5 Test Mole Concept

Assessment

Flashcard

Chemistry

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 in chemistry?

Back

A mole is a unit of measurement used to express the amount of a substance. It is defined as exactly 6.02 x 10^23 particles (atoms, molecules, ions, etc.) of that substance.

2.

FLASHCARD QUESTION

Front

What is Avogadro's number?

Back

Avogadro's number is 6.02 x 10^23, which is the number of atoms, molecules, or particles in one mole of a substance.

3.

FLASHCARD QUESTION

Front

What is the difference between empirical and molecular formulas?

Back

The empirical formula shows the simplest whole-number ratio of elements in a compound, while the molecular formula shows the actual number of atoms of each element in a molecule.

4.

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 the atoms in the compound's formula, using the periodic table.

5.

FLASHCARD QUESTION

Front

What is the empirical formula of a compound with a molecular formula of C6H12O6?

Back

The empirical formula is CH2O.

6.

FLASHCARD QUESTION

Front

How many molecules are in 1 mole of a substance?

Back

There are 6.02 x 10^23 molecules in 1 mole of a substance.

7.

FLASHCARD QUESTION

Front

What is the mass of 1 mole of carbon (C)?

Back

The mass of 1 mole of carbon is 12.01 grams.

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