In the hall-heroult process, a large electric current is passed through a solution of aluminum oxide (al2o3) dissolved in molten cryolite , resulting in the reduction of the to pure aluminum. suppose a current of 690. a is passed through a hall-heroult cell for 46. seconds. calculate the mass of pure aluminum produced.

Abullet found at a crime scene may be used as evidence in a trial if the percentage of metals match to the composition of metals in a bullet from the suspect's ammunition. a forensic scientist's analysis of the bullet shows that it contains 11.9 g of lead, 0.5 g of tin, and 0.8 b of antimony. what is the percentage of lead metal in the bullet? express your answers to the one's place.

Iam in desperate need of with this !

What is the mass of 0.46 mil of mgcl2