The difference between the mass of the balloon when inflated and its mass after being punctured is not an accurate determination of the mass of the gas in the inflated balloon. Why is this?

Endeleev saw trends in the physical and chemical properties of elements when he organized them by

If you add 10ml of hot water to 10ml of cold water and the change in tempature 8°c calculate how much energy is gained by the cold water

An alkaline battery produces electrical energy according to the following equation. zn(s) + 2 mno2(s) + h2o(l) zn(oh)2(s) + mn2o3(s) (a) determine the limiting reactant if 17.5 g zn and 31.0 g mno2 are used. (type your answer using the format ch4 for ch4.) (b) determine the mass of zn(oh)2 produced. _ g