brenyasanders5345
29.10.2019 •
Chemistry
What mass of copper has the same number of atoms as 26.98 g of aluminum? show your work for full credit!
a. convert the mass of aluminum to moles of aluminum. molar mass of aluminum (al) = 26.98 g/mol
b. convert the moles of aluminum to moles of copper. we are comparing the same amount (in moles) of aluminum and copper.
c. convert the moles of copper to mass of copper. molar mass of copper (cu) = 63.55 g/mol
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Ответ:
63.55 g Cu
Explanation:Mass of Aluminium = 26.98 g
Molar mass of Aluminium = 26.98 g/mol
We can therefore, get the number of moles of Al
Moles = mass/molar mass
= 26.98 g ÷ 26.98 g/mol
= 1 mole Al
Since we are comparing equal number of moles of Cu and Al
Moles of copper = 1 mole
We can now convert moles of copper to mass
Mass = Moles × Molar mass
Molar mass of Cu = 63.55 g/mol
= 1 mole × 63.55 g/mol
= 63.55 g
Therefore, the mass of copper that would have the same number of atoms as 26.98 g Al is 63.55 g of Cu
Ответ:
H .5p > 17.1
Step-by-step explanation: Step 1: Divide both sides by 5/5p 5 > 17.1/5 p>3.42