What is the mass of 1 mol of S atoms to three significant figures

How many atoms are there in 5.70 mol of mg

At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure

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.