Final answer:
To find the number of grams of zinc, set up a proportion based on the ratio of zinc to copper of 3 to 14. With 378 grams of copper in the jar, calculate the corresponding amount of zinc. The answer is 81 grams of zinc.
Step-by-step explanation:
To calculate the amount of zinc in the chemical, we can set up a proportion based on the given ratio of zinc to copper which is 3 to 14. We know that there are 378 grams of copper in the jar, and we want to find out how many grams of zinc corresponds to this amount of copper using the given ratio. The setup for the calculation is as follows:
- Zinc/Copper = 3/14
- Zinc/378 g = 3/14
- Zinc = (3/14) × 378 g
Performing the multiplication, we calculate the amount of zinc:
- Zinc = (3 × 378 g) / 14
- Zinc = 1134 g / 14
- Zinc = 81 grams
Therefore, the jar contains 81 grams of zinc.