A 45.0 g coin of copper absorbed 45 calories of heat. What was the final temperatuře of the copper if the initial temperature was 25°C? The specific heat
of copper is 0.092 cal/g°C. *

How many liters of hydrogen gas will be produced at stp from the reaction of 7.179×10^23 atoms of magnesium with 54.219g of phosphoric acid (h3po4) the equation is 3mg + 2h3(> mg(po4)2+3h2

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?