Calculate the number of molecules present in each of the following samples. (a) 0.950 mol acetylene, C2H2, a fuel used in welding molecules (b) How many molecules are in a snowflake containing 1.00 x 10-5 g of H20 molecules (c) a 500. mg tablet of vitamin C, C6H806 NOTE THE UNITS OF mg. molecules (d) how many ATOMS are in the vitamin C sample in part (c)? ATOMS (d) how many ATOMS of oxygen are in the vitamin C sample in part (c)? ATOMS