2. The unbalanced equation for the burning of hydrogen in a rocket engine is:
a. Balance this equation and calculate how many grams of water are produced if 3.45 ×10⁸ grams of oxygen are burned in excess hydrogen. (3 pts)
b. Calculate how many water molecules are produced by burning the same amount of oxygen as in part a. Last, write an explanation for how you solved these problems. (3 pts)