Question

64.92 grams of Hg(NO3)2 to make 5.00 liters of solution.

Answer 1

`\large\boxed{\large\boxed{0.0400mol/liter}}`

Step-by-step explanation:

Knowing that you have 64.92 grams of Hg(NO₃)₂ to make 5.00 liters of solution, you can calcualte the molarity of the solution.

Molarity is a measure of concentration, defined as the number of moles of solute per liter of soluiton. Mathematically:

`Molarity=\frac{\text{number of moles of solute}}{\text{liters of solution}}`

Then, first you must calculate the number of moles of solute. The formula is:

`\text{number of moles}=\frac{\text{mass in grams}}{\text{molar mass}}`

You can either calculate the molar mass of the compound using the chemical formula or search it in the internet.

The molar mass of Hg(NO₃)₂ is found to be 324.7 g/mol.

Now you have everything to calculate the molarity of the solution:

• 
  `\text{number of moles}=(64.92g)/(324.7g/mol)=0.199977mol\approx 0.200mol`

• 
  `Molarity=(0.19977mol)/(5.00liters)\approx0.0400mol/liter`