True or false. The center of gravity and center of mass of an object need to be in the same spot?

The answer is 1.82 j/g°c                  

The answer is nitrogen-containing bases

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).