How long would it take to produce 3.6 g of platinum by passing a 2.0 ampere current through a solution of PtCl2?

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.

Which diagram represents the phase tha occurs after a solid melts?

Of element x has 22 protons, how many electrons does it have