How many grams of oxygen can be produced by decomposing 100.0g of BaO2 to BaO and O2? This is how I have started the problem. Am I doing this right? 2Bao2 yields 2BaO + O2
100.0g of BaO2 x 1 mol O2 x 1 mol O2 x 32g O2
__________________________________________ = 9.45g O2 produced
169.3g BaO2 2 mol BaO2 1 mol O2
H2SO4 + NaCl yields HCl + Na2SO4 what mass of H2SO4 is needed to react completely with 15.0 g of NaCl? H2SO4 + 2NaCl yields 2Hcl + Na SO4
15.0g of NaCl x 1mol NaCl x 1 mol H2SO4 x 98.1g H2SO4
_________ _____________ _____________ = 12.6g of H2SO4
58.5g NaCl 2 mol NaCl 1 mol H2SO4
Al + Cl2 yields AlCl3 25.0g of Al are reacted with 60.0g of Cl2. Which is the limiting agent? How much AlCl3 is produced? 2Al + 3Cl yields 2 AlCl3
60g of Cl2 x 1 mol x 1 mol AlCl3 = .85g AlCl3
________ ___________
71g Cl2 1 mol Cl2
25.0g Al x 1 mol x 1 mol AlCl3
_________ ____________ = .93g
27g of Al 1 mol Al
limiting reagent is Cl2
.85 mol of AlCl3 x 2 mol Al x 133.5g AlCl3
______________ _______________ = 23 excess Al
2 mol AlCl3 1 mol
.85 mol AlCl3 x 3 mol Cl2 x 71g Cl2
________________ ____________ = 90.53 excess Cl2
2 mol AlCl3 1 mol
KI + H2SO4 yields I2 + K2SO4 + H2. If 7.5g of KI is heated with excess H2SO4 and 5.05g of I2 is produced what is the % yield of I2? 2KI = h2SO4 yields I2 + K2SO4 + H2
7.5g of KI x 1 mol x 1 mol H2SO4 x 100.1 g H2SO4
_________ ____________ _______________ = 2.26
166.1g of KI 2 mol KI 1 mol H2SO4
For this one I don't know where to go next
I am currently taking Chemistry and really struggling. I am trying to understand the different questions that I have submitted. I have been working on these since last night and want to know if I am going in the right direction with them and where I am going wrong. I have done different questions in my book and some have answers in the back and some do not. Can someone please guide me where I need help? Thanks
