In the reaction represented by the equation CH4(g) + O2(g) ----> CO₂(g) + H₂O(g), a mass of 125 g CH₄is reacted with excess oxygen. The expression:

$$125\ g\ CH_{4\ }\times\frac{1\ mol\ CH_4}{16.05\ g\ CH_4}\times\frac{2\ mol\ H_2O\ }{1\ mol\ CH_4}\times\frac{18.20\ g\ H_2O}{1\ mol\ H_2O}$$  

is used to calculate the:

What is the mole ratio of H2O to H3PO4 in the following chemical equation?

$$P_4O_{10}+6H_2O\ \rightarrow\ 4H_3PO_4$$  

Knowing the mole ratio of a reactant and product in a chemical reaction would allow you to determine:

In the equation $$6CO_2+6H_2O\ \rightarrow\ C_6H_{12}O_6+6O_2$$  the mole ratio of water to oxygen is:

In the equation $$Al_2\left(SO_4\right)3+3Ca\left(OH\right)_2\ \rightarrow\ 3CaSO_4\ +2Al\left(OH\right)_3$$  , , the mole ratio of calcium hydroxide to aluminum hydroxide is:

              For the reaction represented by the equation $$N_2+3H_{2\ }\rightarrow\ 2NH_3$$  , how many moles of nitrogen (N2) are required to produce 18 grams of ammonia (NH3)?

The most steps are required to solve stoichiometry problems when the reactant is given in grams and the product is sought in

Fill in the steps required to find the number of grams of substance B produced     from the number of grams of substance A:

grams of A $$\rightarrow$$  ________ $$\rightarrow$$ _______ $$\rightarrow$$  ______= grams of B.

For the reaction represented by the equation $$Pb\left(NO_3\right)_2+2KI\ \rightarrow\ PbI_2+2KNO_3$$  how many moles of lead iodide $$\left(PbI_2\right)$$ are produced of 300 grams potassium iodide $$\left(KI\right)$$  when $$Pb\left(NO_3\right)_2$$  is in excess?

For the reaction represented by the equation $$2KClO_3\rightarrow\ 2KCI+30_2$$  how many grams of potassium chlorate are required to produce 160. g of oxygen?