chemistry

posted by .

if 125g of magnesium sulfate heptahydrate is completely dehydrated, how many grams of anhydrous salt will remain?

i would really appreciate anyone's help

• chemistry -

MgSO4.7H2O ==> MgSO4 + 7H2O

mols MgSO4.7H2O = grams/molar mass = about 0.5 mol but that's approximate.
Therefore, you should obtain approximately 0.5 mol MgSO4.
g = mols x molar mas = ?

• chemistry -

thank you!!

Similar Questions

1. chemistry

I am enrolled in analytical chemistry after a 4 year break from any chemistry. I was recently given a problem set and I need some help on the following: A 0.899g sample containing epsom salt, MgSO4 & 7 H2O, and other non-hydrated materials …
2. chemistry

determine the percent by mass of all the elements in the compound magnesium sulfate heptahydrate?
3. Chemistry

Both calcium sulfate and magnesium sulfate can form hydrates with water. Could white anhydrous CaSO4 or MgSO4 be substituted for anhydrous CuSo4?
4. chemistry

What would be the mass of a bag of anhydrous magnesium sulfate, MgSO4, if it contained the same amount of magnesium as a 1.00kg bag of Epsom salts, MgSO4 x 7H2O?
5. Chemistry

If 25 grams of CoCl2•H2O,2 being the subscript of cl and the h, was heated to constant weight. What mass of anhydrous salt would remain?
6. Chemistry

A solution is made by mixing 90.6 g of magnesium sulfate heptahydrate with 2320.0 g of water. 690.00 mL of the solution has a mass of 745.20 g. What is the molarity of the magnesium sulfate solution?
7. Chemistry

A solution is made by mixing 90.6 g of magnesium sulfate heptahydrate with 2320.0 g of water. 690.00 mL of the solution has a mass of 745.20 g. 1. What is the molarity of the magnesium sulfate solution?
8. Chemistry

If 4.00 grams of the hydrate in #1 are heated how many grams of anhydrous salt would remain after all the water was liberated?
9. chemistry

What is the proper name for MgSO4/H2O? A. Manganese sulfate hexahydrate B. Magnesium sulfite dihydrate C. Magnesium sulfite heptahydrate D. Magnesium sulfate heptahydrate
10. Chemistry

7. A student conducts an experiment on a different hydrate. The empty crucible is heated to a constant mass of 24.330. A sample of the unidentified hydrate is placed in the crucible, and the total mass is 31.571 g. The crucible and …

More Similar Questions