7. An exothermic reaction
8. The bonds are forming
<span>they both had their conclusions based on solid evidence</span>
B. A gram would have a lot more molecules of propane than a mole
Explanation:
To calculate the number of atoms in a sample, divide its weight in grams by the amu atomic mass from the periodic table, then multiply the result by Avogadro's number: 6.02 x 10^23.
