Question

A compound of copper and sulfur contains 76.84 g of metal and 38.53 g of nonmetal. How many grams of copper are in 3801 kg of the compound? How many grams of sulfur?

Answer 1

There are:

• 2'531,500 g Cu

• 1'269,500 g S

Step-by-step explanation:

First calculate the percentage of Cu and S in the compound:

• Total mass = 76.84 g + 38.53 g = 115.37 g

• % metal (Cu) = 76.84/115.37 * 100% = 66.6%

• % metal (S) = 38.53/115.37 * 100% = 33.4%

These percentages will remain the same no matter how much of the compound we analyze.

Now we calculate the grams of Cu and S in 3801 kg of the compound:

• kg Cu = 3801 kg * 66.6/100 = 2531.5 kg Cu

• g Cu = 2531.5 kg * 1000 = 2531500 g Cu

• kg S = 3801 kg * 33.4/100 = 1269.5 kg S

• g S = 1269.5 kg * 1000 = 1269500 g S