C3H8+ 5 O2 --> 3 CO2 + 4 H2O
44 g. --------> 72 g
33.3 g. --------> x

Answer: The theoretical yield of H2O is 54.5
Answer:
Coefficients are the numbers in front of the formulas.
B. He would be considered an Organic Chemist since Organic Chemistry is the study of Carbon and its compounds.
Well, there is kinetic energy when the object is in motion. But it will stop eventually because that energy is converted into thermal energy, or heat.