Calculate the number of moles of solute in 67.53 mL of 0.1655 M K2Cr2O7(aq).

Question

Calculate the number of moles of solute in 67.53 mL of 0.1655 M K2Cr2O7(aq).

Answer 1

0.1655 M means 0.1655 moles K2Cr2O7 per liter of solution.

67.53 ml of solution can be converted to 0.06753 liters of solution (divide by 1000)

So, to find moles we simply perform the following calculation:

0.1655 moles/liter x 0.06753 liters = 0.011176 moles = 0.01118 moles (4 sig. figs.)