# chemistry

posted by .

Upon heating 125g MgSO4 • 7 H2O: a) how many grams of water can be obtained?

• chemistry -

125g of MgSO4 • 7 H2O*(1 mole/ 246.47g)= moles of MgSO4 • 7 H2O

Moles of MgSO4•7H2O*(7 moles of H2O/1 mole of MgSO4•7H2O)= moles of H2O

Moles of H2O*(18.00g/mole)= mass of H2O in grams

• chemistry -

64g

## Similar Questions

1. ### chemistry

when 1.40 g of hydrated magnesium salfate is heated to constant mass, 0.68 g of the anhydrous salt remains. find the formula for the hydrated magnesium sulfate. MgSO4*xH2O ==> MgSO4 + xH2O grams water = 1.40 - 0.68 = ?
2. ### chemistry

Gasahol is a fuel containing ethanol(C2H6O) that burns in oxygen (O2)to give carbon dioxide and water. a)How many moles of O2 are needed to completely react with 4.0 moles of C2H60?
3. ### Chemistry

What mass of MgSO4 · 7 H2O is required to prepare 300 mL of a 0.511 M MgSO4 solution?
4. ### chemistry

What mass of MgSO4 · 7 H2O is required to prepare 300 mL of a 0.511 M MgSO4 solution?
5. ### Chemistry

Hi I need with with a prelab calculation for a Hydrate Crystal lab and I am so confused @_@ You don't really need to solve it if you don't want to, I just need an example on how to do these problems 1) Find the mass of the water that …
6. ### Chemistry

Upon heating 8.5g sample of Sodium Sulfate hydrate, it loses 4.776 grams after heating. What steps are necessary for me to find the n for the hydrate?
7. ### college chem

125g MgSO4 • 7 H2O how many grams of anhydrous compound can be obtained
8. ### Chemistry

Upon heating 134 g MgSO4 · 7 H2O: (a) how many grams of water can be obtained?
9. ### chemistry

at what ratio should I titrate sterile water with 50% MgSO4 to get 20% MgSO4.i mean the units of water to those of MgSO4
10. ### chemistry

Epsom salts, a strong laxative used in veterinary medicine, is a hydrate, which means that a certain number of water molecules are included in the solid structure. The formula for Epsom salts can be written as MgSO4 · x H2O, where …

More Similar Questions