You used a nuclear reactor to create a new element xovid (symbol x) with the molar mass of 324.4 g/mol. How many moles does 100.0 g of xovid dioxide contain? (xovid dioxide is similar in formula to carbon dioxide).​

Must be negative.substance increases

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).