please check 4 problems and explain if the answers are wrong. Thank you very much.
1.How many grams of CO are needed to react with an excess of Fe2O3 to produce 591g of Fe? Fe2O3+3CO=3CO2+2Fe
My answer: 444.52 g CO
2.What is the limiting reagent when 135 g of Nitrogen reacts with 53.1g of hydrogen in the production of Ammonia? What is the maximum amount (in grams) of Ammonia that can be produced?
My answer: N2 is the limiting reagent, 164.27g NH3
3.A 350g sample of Al2(SO4)3 is reacted with 400 g of Ca(OH)2. What is the limiting reagent in this reaction? How much excess reagent is left over? What is the maximum amount of aluminum hydroxide that is produced?
My answer: Al2(SO4)3 is the limiting reagent, 173.39g Ca(OH)2 is left over, 159.14g Al(OH)3
4.When a mixture of sulfur and metallic silver is heated, silver sulfide is produced. What mass of silver sulfide is produced from a mixture of 3.0g Ag and 3.0 g S8?
My answer: 3.44g Ag2S