Homework Help: Chem

Posted by Erica on Friday, October 7, 2011 at 3:05am.

Epsom salts consist of magnesium sulfate heptahydrate. Write its formula.
a) How many atoms of oxygen are in 5.15g of Epsom salts?
b) How many formula units of the compound are present in 5.15g?
c) How many moles of water molecules are in 5.15 g of Epsom salts?

Thank you so much!!

Chem - DrBob222, Friday, October 7, 2011 at 4:27pm
MgSO4.7H2O

b) 5.15/formula mass = ?
a) moles O atoms = formula units of MgSO4.7H2O x {[4(for 1SO4)+7(for 7H2O)]*6.022E23}= answer from a x 11 x 6.022E23 = ?
c) formula units from a x 7

Answer this Question

Related Questions

Chemistry - What would be the mass of a bag of anhydrous magnesium sulfate, ...
chemistry - What would be the mass of a bag of anhydrous magnesium sulfate, ...
chemistry - determine the percent by mass of all the elements in the compound ...
AP Chem - I had to do an experiment to calculate the enthalpy of solution of ...
science - atoms and bonds - #1) Draw the following ions using a Bohr diagram: b)...
Chemistry - Magnesium forms both an oxide and a nitride when burned in air. ...
AP Chem - The formula for epson salts is MgSO4*7H2O. If 1.250 g of the compound ...
Gen Chem - epsom salts, household ammonia, and rubbing alcohol are also consumer...
chemistry - Magnesium oxide forms from magnesium metal and oxygen gas. Write a ...
ap chemistry - The formula for epsom salt is MgSO4 . 7H20 If 1.250 g of the ...

For Further Reading

First Name:
School Subject:
Answer: