Respuesta :
Answer: The number of moles of given amount of zinc nitrate is 0.765 moles.
Explanation:
To calculate the number of moles, we use the equation:
[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}[/tex]
We are given:
Given mass of zinc nitrate = 145 g
Molar mass of zinc nitrate = 189.36 g/mol
Putting values in above equation, we get:
[tex]\text{Moles of }Zn(NO_3)_2=\frac{145g}{189.36g/mol}=0.765mol[/tex]
Hence, the number of moles of given amount of zinc nitrate is 0.765 moles.
145 grams of zinc nitrate has been equivalent to 0.76 moles of zinc nitrate.
Moles of a compound can be described as the weight of the compound in a molecule.
The moles can be calculated as:
[tex]\rm moles\;=\;\dfrac{weight}{molecular\;weight}[/tex]
The molecular weight of Zinc nitrate = 189.36 g/mol
The moles of zinc nitrate in 145 g is:
moles = [tex]\rm \dfrac{145\;g}{189.36\;g/mol}[/tex]
moles of zinc nitrate = 0.76 moles.
145 grams of zinc nitrate has been equivalent to 0.76 moles of zinc nitrate.
For more information about the moles, refer to the link:
https://brainly.com/question/20486415
