Answer true(T) or false(F): i) The difference of a two digit number and the number obtained on reversing the digits is
always divisible by 9​

What type of reaction is zn + cucl2 → cu + zncl2?

An exothermic reaction is conducted in an insulated calorimeter filled with water. the calorimeter is then sealed so that there is no heat exchanged between the contents of the container and the surrounding air. which of the following statements is true about the reaction?

In an exothermic reaction the bonding energy of the product is: less than the reactants same as the reactants greater than the reactants dependent upon the presence of a catalyst