Calculate the molar mass of the aluminum oxideA 5.00g strip of aluminum is reacted in air, producing an oxide weighing 9.36gCalculate the percent oxygen and aluminum in the compound.Calculate the % error for percent of aluminum calculated.
if it is every fast food worker in america is doomed.DOOMED I SAY
It's possible, but I am not 100% sure
molar massmolar mass Al2O3 2 x 26.98 + 3 x 16.00 101.96 g/mol mass %'s based on formula % Al in Al2O3 (2 x 26.98 / 101.96) x 100% _ % % O in Al2O3 (3 x 16.00 / 101.96) x 100% _ % mass % based on experimental data % Al in oxide (5.00g / 9.36g) x 100% _% % O in oxide ( (9.36g - 5.00g) / 9.36g) x 100% % and finally % error (|measured - accepted| / |accepted|) x 100% _% here's the answer for the ALUMINUM calcs % Al in Al2O3 (2 x 26.98 / 101.96) x 100% 52.92% % Al in oxide (5.00g / 9.36g) x 100% 53.42% % error ( | 53.42% - 52.92% | / | 52.92% | ) x 100% 0.95% you get to do the oxygen calcs
