What is the total number of hydrogen atoms in the formula 3Mg(C2H3O2)2? PLEASE explain why because I dont understand why the answer isn't 18!!!

In order to calculate the amount of heat transferred you must know the __ and specific heat of the material, as well as the change in temperature. a. volume b. density c. mass d. enthalpy

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.