How many moles are in 12.23 g Mg? answer in units of mol

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both

What are the two largest greenhouse gases

While in europe, if you drive 125 km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car’s gas mileage is 32.0 mi/gal? assume that 1 euro=1.26 dollars