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General Chemistry 1: Stoichiometry

H2_2SO4_4 + 2 KOH \longrightarrow 2 H2_2O + K2_2SO4_4

How many moles of KOH are requred to make 3.0 moles of K2_2SO4_4 ?

N2_2 + 3 H2_2 \longrightarrow 2 NH3_3

If 5 moles of N2_2 react with excess H2_2 how many moles of NH3_3 will the reaction yield?

2 Na + Cl2_2 \longrightarrow 2 NaCl

How many grams of Cl2_2 are needed to react completely with 12.0 g of Na?

The theoretical yield for a reaction is 627.0 g of SF6_6. An experiment only yields 627.8g. What is the percent yield?

4 H2_2 (g) + CS2_2 (g) \longrightarrow CH4_4 + 2 H2_2S (g)

Methane and hydrogen sulfide form when hydrogen reacts with carbon disulfide. Identify the excess reagent and calculate the remaining mass after 36 L of H2_2 reacts with 12 L of CS2_2

Many metals react with oxygen gas to form the metal oxide. When solid calcium and oxygen gas react they form a metal oxide. You wish to calculate the mass of metal oxide that can be prepared from 4.20 g of Ca and 2.80 g of O2_2

A. Predict the metal oxide product formed when solid calcium and oxygen gas react (include states of matter.) Balance the equation.

B. How many moles of product can be produced from the given mass of Ca?

C. How many moles of product can be produced from the given mass of O2_2 ?

D. What is the limiting reactant?