A sample of an unknown liquid has a volume of 12.0 mL and a mass of 6 g. What is its density? A. 2 g/cm3
B. 0.5 g/cm
C. 5.0 g/cm3
D. 0.2 g/cm3

In chemistry, the type of an atom (what element it is) is determined by: a) the number of protons it contains in its nucleus.b) the number of neutrons it contains in its nucleus.c) the number of protons it has in a cloud around the nucleus.d) the number of neutrons it has in a cloud around the nucleus.e) the number of electrons it exchanges with its neighbors.