Which fuel does not produce air pollution when it burns

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.

Calculate the molarity of each of the following solutions. part a) 0.12 mol of lino3 in 5.5 l of solution part b) 60.7 g c2h6o in 2.48 l of solution part c) 14.2 mg ki in 100 ml of solution

The identities of substances are the same before and after which type of change