Question

If you had .681 moles of CASO4*2H2O, how many moles of H2O do you have?

Answer 1

You set this up as a basic dimensional analysis equation. Soo one second I'll write it out

Answer 2

\[.681 mol CaSO _{4} * \frac{ 2molH _{2} 0}{ 1molCaSO _{4} }= your answser\]

Answer 3

So the mols of CaSO4 cancel out and you are left with mols of H2O. The original equation has a 2mol H2O to 1mol CaSO4 so you just multiply what you are given by 2.

Answer 4

Thank you. so would the answer be 1.362 moles of H2O?

Answer 5

Yup! I would round it to 1.36 so you have the same amount of sig figs as the .681