# ChemistryDrBob222 could you please check this over

posted by .

0.281g of Fe(NH4)2(SO4)2*6H2O is dissolved in a total volume of 500.0 mL of water, calculate the resulting Fe concentration in ppm.

molar mass of Fe(NH4)2(SO4)2*6H2O = 392.14088g/mol

molar mass of Fe = 55.845g/mol

0.281g * (1mol/392.14088g) = 7.165X10^-4 mol

7.165X10^-4 mol * (1mol Fe/ 1mol Fe(NH4)2(SO4)2*6H2O) = 7.165X10^-4 mol Fe

7.165X10^-4 mol (55.845g Fe/ 1 mol Fe) = 0.040017g Fe

0.040017g Fe / 500.0mL = 8.003X10^-5g/mL

(8.003X10^-5g/mL)(1000mL/L) = 0.08003g/L

(0.08003g/L)(1000mg/g) = 80.0mg/L

80.0mg/L = 80.0 ppm since 1mg/L = 1ppm

• ChemistryDrBob222 could you please check this over -

That looks good to me. Good work.

## Similar Questions

1. ### Chemistry to DrBob

Dr. bob could you please check this work cus i can't seem to get it right the first step of the synthesis is described by the reaction below. When 1.750 g of Fe(NH4)2(SO4)2 6H2O is mixed with 13 mL of 1.0 M H2C2O4, the theoretical …
2. ### College Chemistry

What is the ppm of standard Fe that is made by dissolving 0.1405g of reagent grade Fe(NH4)2(SO4)2 6H2O (FM 392.14 g/mol) in DI water in a 500mL volumetric flask containing 0.5mL of 98 mass% H2SO4
3. ### Molar Mass Question

Hello, I have been asked to find the molar mass of ferrous ammonium sulfate [ NH4]2[Fe][SO4]2·6H2O] would i consider the molar mass of the water as well, why or why not?
4. ### Science

If .275 moles of ferrous ammonium sulfate (Fe(NH4)2(SO4)2. 6H2O) and an excess of all other reagents are used in a synthesis of K3[Fe(C2O4)3].3H2O, how many grams of product will be obtained if the reaction gives a 100% yield?
5. ### Chemistry

If 0.273 moles of ferrous ammonium sulfate (Fe(NH4)2(SO4)2 . 6H2O) and an excess of all other reagents are used in a synthesis of K2[Fe(C2O4)3] . 3H2O, how many grams of product will be obtained if the reaction gives a 100% yield?
6. ### chemistry - Can you please check

Calculate the amount (g) of each of the following salts that need to be added to a 200 mL volumetric flask to produce a 2 M solution of S. CaSO4 (NH4)2SO4 Fe2(SO4)3 Dr. BOB222, Could you please check the following?
7. ### Chemistry (Titrations)

In order to standardize a KMnO4 solution, 0.2848 g Fe(NH4)2(SO4)2·6H2O was dissolved in 25 mL 0.18 M H2SO4. The KMnO4 solution was added to the Fe(NH4)2(SO4)2·6H2O solution until a pale pink color persisted. The titration took 24.2 …
8. ### Chemistry

The molar mass of the reagent, Fe(NH4)2(SO4)2.6H2O is 392.14 g/mol. Now suppose the measured mass of Fe(NH4)2(SO4)2.6H2O during the practical was 0.0218 g and this was dissolved in 50ml of deionized water that contains 1 to 2ml of …
9. ### Chemistry

Calculate the mass of Fe(NH4)2(SO4)2.6H2O(s) required to prepare 25ml of 1.0 M Fe(NH4)2(SO4)2.6H20(aq)
10. ### Chemistry

0.1825 g of Fe(NH4)2(SO4)2•6H2O is dissolved in 250.00 mL of solution; this is Solution A. 5.00 mL of Solution A is transferred to another flask, and it is diluted to a total of 100.0 mL to make another solution, which is Solution …

More Similar Questions