# chemistry

posted by .

The mass of FeSO4.7H2O required to prepare 500mL of 280ppm Fe2+solutin is

• chemistry -

280 ppm = 280 g/10^6 g solution. If we call the density of the solution 1.00 g/mL and we ignore the contribution of the mass of the salt to the solution (usually ok since the amount of salt is so small), then 280 ppm = 280 g/10^6 mL which is the same as 0.280 g/10^3 mL = 0.280 g/L. You want 500 mL; you can go from here.

## Similar Questions

1. ### chemistry

how do u calculate the percentage of water of cystallisation in FeSO4.7H2O percent water= 7*molmassH20/molmassFeSO4.7H2O * 100 now to get the mole mass of FeSO4.7H2O * 100, it is the sum of the atomic mass of one Fe, one S, four O, …
2. ### chemistry

A solution of ferrous sulfate (FeSO4) is titrated with a solution of potassium permanganate in sulfuric acid. The balanced half reactions are as follows: 10FeSO4 + 5 H2SO4 --> 5 Fe2(SO4)3 + 10 H ^+ +10e^- and 2 KMnO4 + # H2SO4 +10e^- …
3. ### Chemistry

What mass of MgSO4 · 7H2O is required to prepare 800 mL of a 0.442MMgSO4 solution?
4. ### Chemistry

What mass of MgSO4 · 7H2O is required to prepare 800 mL of a 0.442MMgSO4 solution?
5. ### CHEMISTRY

1)If 36 mL of KMnO4 solution are required to oxidize 25 mL of 0.02932 M NaC204 solution, what is the concentration of the solution?
6. ### CHEMISTRY

1)If 36 mL of KMnO4 solution are required to oxidize 25 mL of 0.02932 M NaC204 solution, what is the concentration of the solution?
7. ### CHEMISTRY

1)If 36 mL of KMnO4 solution are required to oxidize 25 mL of 0.02932 M NaC204 solution, what is the concentration of the solution?
8. ### chemistry........help!! =)

How many grams of FeSo4 are required to prepare 0.50 L of a 0.010 M FeSO4 solution?
9. ### mass percent

Suppose 22.93mL of KMnO4 solution used in the question above (KMnO4 solution in above question had concentration of 0.02036M)are needed to oxidize Fe(2+) to Fe(3+) in a 0.4927g pill. What is the mass percent of FeSO4*7H2O (molar mass …
10. ### Chemistry

What is the molar mass of feso4 . 7h2o

More Similar Questions