Chemistry - Practice stoichiometry

What coefficients correctly balance the formula NH4NO2----> N2+H2O

1,1,2

For the reaction by the equation 2H2+O2 ----->2H2O how many grams of water are produced from 6.00 mol of hydrogen

108 grams

For the reaction represented by the equation Cl2 +2KBr--->2KCl+Br2 how many grams of potassium chloride can be produced from 300.g each of chlorine and potassium bromide ?

188 g

For the reaction represented by th equation C+2H2----->CH4, how many moles of hydrogen are required to produce 10 mol of methane, CH4?

20 moles

The Haber process for producing ammonia commercially is represented by the equation N2+3H2---->2NH3 To completely convert 9.0 mol hydrogen gas to ammonia gas, how many moles of nitrogen gas are required?

3.0 moles

Sulfur is gasoline can produce sulfuric acid, H2SO4, according to the two-step process shown below. For each 125 g of sulfur in gasoline , how many moles of H2SO4 will be produced ? S+O2-----> SO2 2SO2+2H2O+O2---->2H2SO4

3.90 moles

What mass of PCl3 forms with the reaction of 75.0g P4, with 275 g Cl2 ? P4+6Cl2 ----> 4PCl3

333g

In the decomposition of hydrogen peroxide, the percentage yield of oxygen was 93% What is the actual yield in grams of oxygen if you started with 100g of H2O2. The reaction process of according to the equation ; 2H2O2 -----> 2H2O+O2

43.7

In the reaction represented by the equation 2NH3+CO2-----> CO(NH2)2 +H2O, 30.7 g of CO(NH2)2 forms per 1.00 mole of CO2 that reacts when NH3 is in excess. What is the percentage yield ?

51.1 %

For the reaction represented by the equation 2HNO3+ Mg(OH)2---->Mg(NO3)2 +2H2O, how many gram s of magnesium nitrate are produced from 8.00 moles of nitric acid, HNO3 and an excess of Mg(OH)2?

593 g

For the reactant represented by the equation Mg+2HCl-----> H2 +MgCl2, calculate the percentage yield of magnesium chloride if 100g of magnesium reacts with excess hydrochloric acid to yield 330.g of magnesium chloride?

84.2 %

For the reaction represented by the equation SO3+H2O---->H2SO4 , calculate the percentage yield if 500 g of sulfur trioxide react with excess water to produce 575 g of sulfuric acid ?

93.9%

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

actual yield

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

limiting reactant

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

theoretical yield