What is the mass of 5.0 cm^3 piece of copper having a density of 8.96 g/cm^3

The mass of copper piece is 44.8 grams

Explanation:

Density is defined as amount of mass present in the unit volume of the substance.

Mathematically written as:

We are given:

Density of copper, d =

Mass of copper piece = M

Volume of the copper piece = V =

Putting values in above equation, we get:

Hence, the mass of copper piece is 44.8 grams

"you start with 15.67 g mgco3-xh2o, when heated and all the water is removed, you are left with 7.58 g mgco3 only.

therefore, you had 15.67 - 7.58 = 8.09g h2o  

moles of each :

7.58g mgco3 = ? moles = 7.58g / 83.4g/mole = 0.09moles  

8 09g h2o = ? moles = 8.09g / 18g/mole = 0.44moles  

molar ratio between the two by dividing both numbers by the smallest number :

0.09 / 0.09 = 1  

0.44 / 0.09 = 4.8  

mgco3-5h2o"

the answer is true. hope it .