A 20 g piece of copper is added to 250g of water in a coffee cup calorimeter The temperature of the water increases from 25 oC to 53oC. Calculate the value of heat of the reaction, q. The specific heat of water is 4.184 J/goC.

What is driving behind plate tectonics (plate movment)? a) gravity only b) inertia c) convection and gravity d) the sun theres no option for science so i picked chemistry. plz

Calculate the number of molecules present in 0.750 mol of mgo.

Consider the following reaction at equilibrium: c(s)+h2o(g)⇌co(g)+h2(g) predict whether the reaction will shift left, shift right, or remain unchanged upon each of the following disturbances. a) c is added to the reaction mixture. b) h2ois condensed and removed from the reaction mixture c) co is added to the reaction mixture d) h2 is removed from the reaction mixture.