What mass of zinc (in kg) is in a 3.50 kg roll of tin foil that is 92.5% tin and 7.5% zinc? 0.90 kg
O 0.26 kg
O 3.2 kg
O 0.47 kg
O 2.1 kg

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.