The Math of Chemistry (A to Z)

The Math of Chemistry (A to Z)

Assessment

Flashcard

Chemistry

9th - 12th Grade

Hard

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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 the amount of substance that contains as many entities (atoms, molecules, etc.) as there are in 12 grams of carbon-12.

2.

FLASHCARD QUESTION

Front

How do you calculate the number of moles from volume and molarity?

Back

Number of moles = Volume (L) × Molarity (mol/L).

3.

FLASHCARD QUESTION

Front

What is the empirical formula?

Back

The empirical formula is the simplest whole-number ratio of atoms of each element in a compound.

4.

FLASHCARD QUESTION

Front

How do you determine the empirical formula from percent composition?

Back

Convert the percentage of each element to grams, then to moles, and divide by the smallest number of moles to find the simplest ratio.

5.

FLASHCARD QUESTION

Front

What is specific heat capacity?

Back

Specific heat capacity is the amount of heat required to raise the temperature of 1 gram of a substance by 1 degree Celsius.

6.

FLASHCARD QUESTION

Front

How do you calculate heat energy using specific heat?

Back

Heat energy (Q) = mass (g) × specific heat (J/g°C) × change in temperature (°C).

7.

FLASHCARD QUESTION

Front

What is the relationship between moles and mass?

Back

Moles = Mass (g) / Molar mass (g/mol).

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