Response:
A bottle with 0.95 moles of hydrogen peroxide per liter contains 32.31 g of hydrogen peroxide for each liter of solution.
Explanation:
To review, recall that:
Molarity of a substance = number of moles of the substance divided by the volume of solution in liters.
In this situation, the moles of hydrogen peroxide are 0.95 and the volume of the solution equals one liter. Thus;
Molarity of hydrogen peroxide = 0.95/1 = 0.95 M.
Additionally, remember that:
number of moles of a substance = mass of the substance divided by its molar mass.
So;
mass of substance = number of moles times molar mass.
In this case, the number of moles is 0.95 while the molar mass is 34.01 g/mol. Therefore;
mass of hydrogen peroxide = 0.95 x 34.01 = 32.31 g.
Thus, a bottle containing 0.95 moles of hydrogen peroxide per liter has 32.31 g of hydrogen peroxide in each liter of solution. The molarity of the hydrogen peroxide solution is also 0.95 M.
