How many calories does unsaturated fat provide per gram?

One gram of fat provides 9 calories, which each contains 4 calories per gram

Because you ate playdough

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).