One mole of nitrous acid (hno2) contains 1.00 gram of hydrogen (h), 14.0 grams of nitrogen (n), and 32.0 grams of oxygen (o). what is the percent composition of nitrogen in nitrous acid?

You dissolve 8.65 grams of lead(l) nitrate in water and then you add 2 50 grams of aluminum. this reaction occurs 2ai(s)+ 3pb(no3)2(aq) -3pb(s)+ 2aino3la(aq) the theoretical yield of solid lead?

Using the periodic table, complete the following. element: hydrogen symbol: h₂ molecular weight: g mass of one mole: g/mol

Is the genie in the bottle experiment a physical or chemical change/reaction?