stoichiometry test

in the reaction represented by the equation c+2h2—> CH4, what is the mole ratio of hydrogen to methane?

2:1

in the reaction represented by the equation N2+3H2->2NH3, what is the mole ratio of hydrogen to ammonia?

3:2

C3H8+5O2-> 4H2O+3CO2 what is the mole ratio of water to oxygen gas?

4:5

what is the measured amount of a product obtained from a chemical reaction?

actual yield

coefficients are used for

both a and b

to balance a chemical equation, it may be necessary to adjust the

coefficients

what is the study that deals with the mass relationships of elements in compounds?

composition stoichometry

which of the following is the substance that is not used up completely in a chemical reaction?

excess reactant

which reactant controls the amount of product formed in a chemical reaction?

limiting reactant

in the reaction represented by the equation CH4(g)+2O2(g)—>CO2(g) + 2H2O(g), a mass of 125 g CH4 is reacted with excess oxygen. The expression is used to calculate the

mass of water produced

_______ is a conversion factor that relates the amounts in moles of any two substances involved in chemical reaction

mole ratio

a balanced chemical equation allows one to determine the

mole ratio of any two substances in the reaction

What is the study of the mass relationships among reactants and products in a chemical reaction?

reaction stoichiometry

when the limiting reactant in a chemical reaction is completely used

the reaction stops

what is the maximum possible amount of product obtained in a chemical reaction?

theoretical yield