The Mole and Formulas

The Mole and Formulas

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?

Back

A mole is a unit of measurement in chemistry that represents 6.02 x 10^23 particles (atoms, molecules, ions, etc.).

2.

FLASHCARD QUESTION

Front

What is the molar mass of a substance?

Back

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

3.

FLASHCARD QUESTION

Front

How do you convert grams to moles?

Back

To convert grams to moles, divide the mass of the substance (in grams) by its molar mass (in g/mol).

4.

FLASHCARD QUESTION

Front

How do you convert moles to molecules?

Back

To convert moles to molecules, multiply the number of moles by Avogadro's number (6.02 x 10^23).

5.

FLASHCARD QUESTION

Front

What is the volume of one mole of gas at STP?

Back

One mole of an ideal gas occupies 22.4 liters at standard temperature and pressure (STP).

6.

FLASHCARD QUESTION

Front

What is the formula to calculate the number of molecules from grams?

Back

Number of molecules = (grams / molar mass) x Avogadro's number.

7.

FLASHCARD QUESTION

Front

What is STP in chemistry?

Back

STP stands for Standard Temperature and Pressure, which is defined as 0 degrees Celsius (273.15 K) and 1 atmosphere pressure.

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