Final answer:
For a pound cake requiring equal parts of flour, sugar, butter, and eggs, 4 pounds of butter means you need 4 pounds of each of the other ingredients. Similarly, in the balanced chemical reaction of hydrogen and oxygen forming water, correct proportions based on the equation's coefficients are vital.
Step-by-step explanation:
The student's question relates to the proportions required in a recipe and how it connects to a chemical reaction. Specifically, if you are preparing a pound cake using the classic recipe which requires equal amounts of the four main ingredients (1 pound of eggs, 1 pound of butter, 1 pound of flour, and 1 pound of sugar), then if you have 4 pounds of butter, you would indeed need 4 pounds of sugar, 4 pounds of flour, and 4 pounds of eggs to keep the ratios the same.
Similarly, if we look at a chemical reaction, like the combination of hydrogen and oxygen to form water, we must follow the balanced chemical equation: 2 H₂(g) + O₂(g) → 2 H₂O(l). If you start with 1.00 g of H₂, you need to ensure that you have the correct proportions of H₂ and O₂ to completely react them according to the equation.