Chemical Quantities - Flashcard

Chemical Quantities - Flashcard

Assessment

Flashcard

Chemistry

9th - 12th Grade

Hard

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16 questions

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1.

FLASHCARD QUESTION

Front

What is the empirical formula?

Back

A formula that shows the lowest whole number ratio of elements in a compound.

2.

FLASHCARD QUESTION

Front

How many moles of potassium (K) are in 25 g of K?

Back

0.64 mol

3.

FLASHCARD QUESTION

Front

What is the molar mass of C7H5N3O6?

Back

227.1 g/mol

4.

FLASHCARD QUESTION

Front

How many atoms of potassium (K) are in 0.5 moles of K2CrO4?

Back

6.022×10^23 atoms

5.

FLASHCARD QUESTION

Front

What is the mass of 1.55 moles of NCl3?

Back

187 g

6.

FLASHCARD QUESTION

Front

Define molar mass.

Back

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

7.

FLASHCARD QUESTION

Front

What is the relationship between moles and mass?

Back

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

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