Question

9. Write a balanced equation for the following: aqueous barium chloride reacts with aqueous sodium chromate to form aqueous sodium chloride plus solid barium chromate 10. Consider the fermentation reaction of glucose: CH,0.-2C,H,OH + 200, A1.00-mol sample of CHO, was placed in a vat with excess yeast. If 35.1 g of CHOH was obtained, what was the percent yield of C,H,OH? 11. It is found that 14 g of element X contains 7.509 10 atoms. The atomic mass of X 12. What is the percentage by mass of chlorine in DDT, CH.C1.7

Answer 1

- Ba C (ap) Nag Croy ay) who buitine Ba Croy (s) +2 Nackay ای ارگان Co H12 O 2 C 450 u + 2002 1 mol 2 mol. stiklalin molar mass of Chou = 469 mole mass mus molarmas 35.1 46 -0-76 mole of yield the actual geld l tulong this retical geld Theoretical geld & 2 mol to yield = 0.76 x 100 = 38% 6-0 23 x 10 23 (frogadros ino) atons au present in 1 mol 7.509x1021 atoms must be present in & IN x 7.509x104 My 6-023x10 23 molar mass = 0.0124 mol wass = 1.431 1154 0.-0124 atonni maks. 115.4 g b

M DDI .C14 Hq 5 (212 g/mol H₂ q g/mol C-35-5 g/mol Molar mass- (14x12)+(axl) + (5x355) 160 + 9 + 177.5 354-5 g/mol mass of ce in DDT" 5435-5=17715 was to of us mass of ch 100 e molar mass 177.5 354.5 Xloo 50.1%