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For H? + Cl? ? 2HCl, how many moles of Cl? needed for 3 moles of H??

3
1.5
6
2

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FUNDAMENTAL CONCEPTS OF CHEMISTRY

Stoichiometric coefficients show:

Mass
Volume
Moles
Charge

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FUNDAMENTAL CONCEPTS OF CHEMISTRY

Balanced equations are necessary for:

Law of conservation
Law of gravity
Gas collection
Volume calculation

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FUNDAMENTAL CONCEPTS OF CHEMISTRY

For 4Fe + 3O? ? 2Fe?O?, mole ratio of Fe to Fe?O? is:

4:02
2:02
2:03
3:02

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FUNDAMENTAL CONCEPTS OF CHEMISTRY

Stoichiometry assumes reactions are:

Explosive
Spontaneous
Ideal
Complete

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FUNDAMENTAL CONCEPTS OF CHEMISTRY

Mole ratios are essential for:

Predicting product moles
Neutralizing acids
Separating mixtures
Evaporating solvents

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FUNDAMENTAL CONCEPTS OF CHEMISTRY

1 mole of Zn reacts with how many moles of HCl in Zn + 2HCl ? ZnCl? + H??

1
2
3
0.5

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FUNDAMENTAL CONCEPTS OF CHEMISTRY

The mole ratio from 2C?H?? + 25O? ? 16CO? + 18H?O between O? and CO? is:

25:16:00
2:16
8:16
16:25

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FUNDAMENTAL CONCEPTS OF CHEMISTRY

In a lab, if 3 moles of Cl? react with H?, how many moles of HCl form?

3
6
1
2

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FUNDAMENTAL CONCEPTS OF CHEMISTRY

For 2CO + O? ? 2CO?, ratio of O? to CO? is:

1:02
2:01
1:01
2:02

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FUNDAMENTAL CONCEPTS OF CHEMISTRY

For 2H?O ? 2H? + O?, how many moles of O? from 6 moles of H?O?

2
3
4
1

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FUNDAMENTAL CONCEPTS OF CHEMISTRY

Mole ratios help in determining:

Color changes
Product yield
Acidity
Molarity

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FUNDAMENTAL CONCEPTS OF CHEMISTRY

If 5 moles of Fe?O? produce 10 moles of Fe, the mole ratio is:

1:02
5:02
2:05
1:01

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FUNDAMENTAL CONCEPTS OF CHEMISTRY

Mole ratios can only be used when:

Equations are balanced
Reactants are solid
Products are gases
Masses are known

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FUNDAMENTAL CONCEPTS OF CHEMISTRY

The term ?stoichiometry? involves all except:

Energy yield
Mole relationships
Mass-to-mole conversion
Reaction ratios

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FUNDAMENTAL CONCEPTS OF CHEMISTRY

A limiting reactant is identified using:

Volume ratios
Pressure ratios
Mole ratios
Rate laws

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FUNDAMENTAL CONCEPTS OF CHEMISTRY

In the reaction 2K + 2H?O ? 2KOH + H?, the mole ratio of K to KOH is:

1:01
2:01
2:02
1:02

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FUNDAMENTAL CONCEPTS OF CHEMISTRY

To convert from moles of A to moles of B, one needs:

Mole ratio
Mass ratio
Energy ratio
Atomic ratio

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FUNDAMENTAL CONCEPTS OF CHEMISTRY

Mole ratios are derived directly from:

Empirical data
Experimental error
Balanced equations
Theoretical laws

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FUNDAMENTAL CONCEPTS OF CHEMISTRY

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