Respuesta :
Explanation:
Number of moles equal to the given mass divided by molar mass of the element or compound.
Mathematically, No. of moles = [tex]\frac{mass given}{Molar mass}[/tex]
The given mass is [tex]4.86 \times 10^{4}[/tex] g and molar mass is 24.30 g/mol.
Therefore, calculate the number of moles as follows.
No. of moles = [tex]\frac{mass given}{Molar mass}[/tex]
= [tex]\frac{4.86 \times 10^{4} g}{24.30 g/mol}[/tex]
= [tex]0.2 \times 10^{4}[/tex] mol
= [tex]2 \times 10^{3}[/tex] mol
or, = 2000 mol
Thus, we can conclude that [tex]4.86 \times 10^{4}[/tex] g of Mg has 2000 moles.
Answer : The moles of magnesium (Mg) is, [tex]1.99\times 10^3moles[/tex]
Solution : Given,
Mass of magnesium (Mg) = [tex]4.86\times 10^4g[/tex]
Molar mass of magnesium (Mg) = 24.31 g/mole
Formula used :
[tex]\text{Moles of Mg}=\frac{\text{Mass of Mg}}{\text{Molar mass of Mg}}=\frac{4.86\times 10^4g}{24.31g/mole}=1.99\times 10^3moles[/tex]
Therefore, the moles of magnesium (Mg) is, [tex]1.99\times 10^3moles[/tex]
