Question

how many moles in 1.2g of water?

how many moles in 1.8g of MgSO4?

write a probable formula for magnesium sulfate hydrate.

Answer 1

medals to how ever helps

Answer 2

You know the relationship between the amount of substance in moles and the mass of a chemical?

Answer 3

that why i need help
please

Answer 4

Okay the relation can be summarized from this equation:
"for a chemical \(\sf X_{a}Y_{b}\) we say that:
\[\large n(\sf X_{a}Y_{b}) = \frac{ m(\sf X_{a}Y_{b}) }{ M(\sf X_{a}Y_{b}) }\]
Here is:
\(n\) the amount of substance in moles.
\(m\) is the mass in gram
\(M\) is the molar mass in gram/moles and given from the equation:
\[\large M(\sf X_{a}Y_{b})=a \times M(X)+b \times M(Y)\]

Answer 5

thank you