10.0 L cylinder contains 7.60 g of Ar(g) and 4.40 g of N2(g) at 25oC. Calculate the partial pressure of each gas and the total pressure in the cylinder.

Determine the empirical formula for succinic acid that is composed of 40.60% carbon, 5.18% hydrogen, and 54.22% oxygen.

4al + 3o2 → 2al2o3 what does the "3" in front of o2 stand for? a) it indicates that there are 5 oxygen atoms after you add the coefficient and the subscript. b) it indicates that that there are are total of 6 oxygen atoms all bonded together as a single molecule. c) it indicates that there are 3 oxygen molecules chemically bonded to each other in the reaction. d) it indicates that there are 3 separate oxygen molecules in the reaction.

Hydrogen has three isotopes 1h, 2h, and 3h. what is the difference between these three isotopes?