Question

3. How much KCIO3 must be decomposed to provide 400 mL of oxygen gas collected at STP? KCIO3 (5) ► KCI (s) +__02 (8) a 4. The volume of a sample of gas that weighs 0.324 g is 295. mL at 26.°C and 732. torr. Calculate the density of the gas at STP. (732 foor) (2 asmo) ) = (10.m) .: 224 21:259/ 324. dore PVPV TTTTIIIIIIIIIIIIII 1.25g/h 5. What is the molar mass of a gas if 0.528 g of it occupies 457 ml when collected at STP?

Answer 1

3) kuo – Kill +302 [At STP Imo=22.4 volume of o, in o. Moly of Moly of 22.44 tone 0.4L 22.4 L/mol - 0.01186 ml nd of Kell oz receber = 2 x 0.01786 - 0.0119 mol mass of Khlo, decomposed: 0.0119 malx 122.559