Post a New Question

Chemistry

posted by .

A 32.907-g sample of a hydrate of Au (CN)3 contains 5.406 g H2O

What is the formula for the hydrate?
What is the percent water in this compound?
What mass of this hydrate contains 100.0 g H2O?

  • Chemistry -

    mass Au(CN)3 + H2O = 32.907g
    mass H2O = 5.406g
    mass Au(CN)3 = 32.907-5.406 = ?g

    Convert ?g Au(CN)3 to mols = ?
    Convert 5.406g H2O to mols ?

    Find the ratio of mols H2O to 1 mol Au(CN)3 to find the formula.

    %H2O = (mass H2O/total mass)*100 = ?

    For part c, use the percent formula you just finished, substitute the numbers you want and solve for total mass.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

More Related Questions

Post a New Question