Which of the following is NOT an example of an atom?
A. A water molecule
B. The smallest part of oxygen
C. The smallest part of helium

Amixture with the same composition throughout is!

How many moles of lead are in 1.50 x 10^12 atoms of lead? could you explain the answer as well and not just give it to me i am refreshing for finals and i need to know how to do it

What are the advantages of using the metric system? designed as a decimal system making conversions simpler more accurate system of measurement has prefixes that correspond to an amount to use with all base units used by the entire scientific community