Question

A 0.500g mixture of Cu₂O and CuO contains 0.425g Cu. What is the mass of CuO in the mixture?

a) 0.075 g

b) 0.150 g

c) 0.275 g

d) 0.350 g

Answer 1

To find the mass of CuO in the mixture, subtract the mass of Cu₂O from the total mass of the mixture.

Step-by-step explanation:

To find the mass of CuO in the mixture, we first need to determine the mass of Cu₂O in the mixture. We are given that the total mass of the mixture is 0.500g and the mass of Cu is 0.425g. This means that the mass of Cu₂O is 0.500g - 0.425g = 0.075g.

Next, we need to find the mass of CuO in the mixture. Since the total mass of the mixture is 0.500g and the mass of Cu₂O is 0.075g, we can subtract the mass of Cu₂O from the total mass to find the mass of CuO. Therefore, the mass of CuO in the mixture is 0.500g - 0.075g = 0.425g.

So, the correct answer is (c) 0.275g.