Calculate the atom economy to form aluminium from aluminium oxide
2Al2O3 --> 4Al + 3O2

Which of the following happens during cell division? (a) energy is created (b) waste is eliminated (c) carbon dioxide is released (d) damaged cells are replaced

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

The number at the end of an isotope’s name is the number.