Question

What mass of iron (III) nitrate will be in 129.8ml of a 0.3556 molar aq iron (III) nitrate solution?

Answer 1

Answer: The mass of iron (III) nitrate is 11.16 g/mol

Step-by-step explanation:

To calculate the mass of solute, we use the equation used to calculate the molarity of solution:

`\text{Molarity of the solution}=\frac{\text{Mass of solute}* 1000}{\text{Molar mass of solute}* \text{Volume of solution (in mL)}}`

We are given:

Molarity of solution = 0.3556 M

Molar mass of Iron (III) nitrate = 241.86 g/mol

Volume of solution = 129.8 mL

Putting values in above equation, we get:

`0.3556M=\frac{\text{Mass of iron (III) nitrate}* 1000}{241.86 g/mol* 129.8}\\\\\text{Mass of iron (III) nitrate}=11.16g`

Hence, the mass of iron (III) nitrate is 11.16 g/mol