Question

question number 8&9 please

0. There are several different similar mixtures called pewter. One particular sample of pewter is 83% tin and 15% antimony. How many moles of antimony are contained in 50 grams of pewter! 9. A 0.7234 g sample of hemoglobin is isolated and analyzed for iron. If hemoglobin is found to contain 0.324 % Fe, and it is assumed that there are four ferrous ions, Fe**, incorporated in each hemoglobin molecule, calculate the molar mass of hemoglobin.

Answer 1

98: Pewten contains 85% of tin (Sn) and 15% of antimony (56) in That meary 15g of antimony contains in loog of peuter. .. Again, 100 g of peniten contains = 15 g af antimony (Sb) Ig of peniten contains = is a 1. 50 g of peniten contains = 15 x 50g. = 7.59 Molecular weight of antimony (sb) = 921.76 g mot 121.76 g of antimony (sb) = 1 mole I g of antimony (sb) = 1 1 1 1 769 .7.5 g af antimony (56) = mole = 121.76 g x 7.56 mol = 0.0615 mole. So in 50gm of peuten contains 0.0615 mole of antimony.