Answer:
two examples are blood and soapy water.
Explanation:
Formula for diarsenic pentoxide
As2O5
Answer:
hope this image is helpful for you
So your answer would pretty much be 2.80 x 10^24. The picture is just the explanation and how you would get that answer.
First, we must find the total mass of CuBr₂:
Mass = 64 + 2 x 80
Mass = 224
Percentage mass of copper = mass of copper x 100 / total mass
Percentage mass of copper = (64 / 224) x 100
Percentage mass of copper = 28.45%