How much heat for it take to melt 2 x 10 ^2 kg copper? show work

H2so4(aq) + mg(s)—> mgso4(aq) +h2(g) which substance is the acid in the reaction?

Use this information to determine the number of calends electrons in the atoms. which of the following correctly compares the stability of the two atoms? a) both are unreactive b) both are highly reactive c) a is unreactive and d is reactive d) a is reactive and d is unreactive

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.