Answer:
79.89%
Explanation:
Copper has a molar mass of 63.55
Oxygen has a molar mass of 16.00
If you add these you get 79.55
To get the mass percent of copper divide copper by the whole. 63.55/79.55*100= 79.89%
Relationships between words and how we construct meaning.
A- The type of bread. some breads can become moldy faster than others.
Magnese sulfide would be MnS