Multiple Choice
How many grams of hydrogen are present in 2 moles of H_2O?
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3. Chemical Reactions
Stoichiometry
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Which of the following allows us to convert from moles of one substance to moles of another substance in a chemical reaction?
A
The coefficients in the balanced chemical equation
B
The molar mass of the substances
C
The volume of the reactants
D
The temperature of the reaction
Verified step by step guidance1
Understand that in a chemical reaction, the coefficients in the balanced chemical equation represent the mole ratio between reactants and products.
Recognize that these mole ratios allow you to convert from moles of one substance to moles of another by using the coefficients as conversion factors.
Recall that molar mass is used to convert between grams and moles, not directly between moles of different substances.
Note that volume and temperature can affect reaction conditions but do not provide direct mole-to-mole conversion factors.
Therefore, the key to converting moles of one substance to moles of another in a reaction is to use the coefficients from the balanced chemical equation.
