Marble chips weighing 4.og were dropped into a large volume of hydrochloric acid,2.5g of the marble remained after 5 minutes. Calculate the rate of reaction

Which metal exist in liquid state and can be cut with knife ?

Consider the following reactions. (note: (s) = solid, (l) = liquid, and (g) = gas.) mg(s) + ½o2(g) → mgo(s) + 146 kcal/mole h2(g) + ½o2(g) → h2o(g), δh = -57.82 kcal/mole what type of reaction is represented by the previous two examples?

Enzymes affect the reactions in living cells by changing the