What is the percent composition by mass of sulfur in the compound MgSO4 (gram formula mass = 120 g/mol)?

What is the number of atoms in 3.54 mol s

How many liters of ethylene glycol antifreeze (c2h6o2), with a density of 1.100 g/l, would you add to your car radiator containing 15.0 kg of water if you needed to protect your engine to - 21.5°c? for water, kf = 1.86°c m -1.

What does an electron configuration for an atom relate to the atoms placement on the periodic table