Aballoon filled with helium has a volume of 30.0 l at a pressure of 0.9 atm and a temperature of 15.0oc. what will the volume of the balloon be if the temperature is increased by 80oc and the pressure remains constant?

Calculate - analysis of compound composed of iron and oxygen yields 174.86 of fe and 75.14g of o. what is the empirical formula for this compound?

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure

For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)