Mole Ratios Bell Ringer

Mole Ratios Bell Ringer

Assessment

Flashcard

Chemistry

10th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What are mole ratios used for in chemical reactions?

Back

Mole ratios are used for conversions between moles of reactants and products in a chemical reaction, derived from the coefficients of the balanced chemical equation.

2.

FLASHCARD QUESTION

Front

In the reaction 2 C2H6 + 7 O2 → 4 CO2 + 6 H2O, what is the mole ratio of ethane (C2H6) to oxygen (O2)?

Back

The mole ratio of ethane to oxygen is 2:7.

3.

FLASHCARD QUESTION

Front

In the reaction 2 C2H6 + 7 O2 → 4 CO2 + 6 H2O, what is the mole ratio of carbon dioxide (CO2) to water (H2O)?

Back

The mole ratio of carbon dioxide to water is 4:6, which simplifies to 2:3.

4.

FLASHCARD QUESTION

Front

What is the mole ratio between nitrogen (N2) and ammonium (NH3) in the reaction N2 + 3H2 → 2NH3?

Back

The mole ratio between nitrogen and ammonium is 1:2.

5.

FLASHCARD QUESTION

Front

In the reaction 3 CaCl2 + 2 Na3PO4 → Ca3(PO4)2 + 6 NaCl, what is the mole ratio of sodium chloride (NaCl) to calcium phosphate (Ca3(PO4)2)?

Back

The mole ratio of sodium chloride to calcium phosphate is 6:1.

6.

FLASHCARD QUESTION

Front

How do you determine the mole ratio from a balanced chemical equation?

Back

The mole ratio is determined by looking at the coefficients of the balanced chemical equation.

7.

FLASHCARD QUESTION

Front

What is the significance of balancing a chemical equation in relation to mole ratios?

Back

Balancing a chemical equation ensures that the law of conservation of mass is followed, allowing for accurate mole ratios between reactants and products.

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