Carbon dioxide (CO2), water (H20), and sugar (C6H1206) are all examples of... homogeneous mixtures because they do not have a definite composition, but look the same throughout
mixtures because they do have definite compositions.
elements because they can be found on the Periodic Table.
compounds because they all have chemical formulas.

The skeletal system performs a variety of functions that are crucial to maintaining life processes. what function is performed in the bone marrow, but not in the ossified bones of the skeleton? a oxygen transportation c mineral storage b. muscle attachment d red blood cell production

In 2002, the rare earth elements mine in mountain pass, california was closed because

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?