28.5cm³
Explanation:
Given parameters:
Number of moles of copper = 4 mole
Atomic mass of Cu = 63.5g/mol
Density of copper = 8.92 x 10³kg/m³ = 8.92g/cm³
Unknown:
Volume of the sample of copper = ?
Solution:
From the given parameters, first find the mass of the copper using the product of the number of moles and molar mass. Then, use the density equation to find volume from the obtained mass.
Solving:
Mass of copper = Number of moles x molar mass of copper
= 4 x 63.5
= 254g
Density = ![\frac{mass }{volume}](https://tex.z-dn.net/?f=%5Cfrac%7Bmass%20%7D%7Bvolume%7D)
Volume =
=
= 28.5cm³
Volume of the copper is 28.5cm³
Learn more:
Density brainly.com/question/1747765
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