How many grams of salt and how much water is needed to prepare 80 g of a 10% solution?
September 26, 2021 | education
| First, you need to determine the mass of the salt.
m salt = 80 * 0.1 = 8 g.
This means that the mass of salt is 8 g.
Next, you need to determine the mass of water in this solution.
80 – 8 = 72 g.
This means that the mass of water is 72 g.
Let’s determine the volume of water.
M (H2O) = 1 * 2 + 16 = 18 g / mol.
m / M = V / Vm.
Where m is mass.
M – paint mass.
V is the volume.
Vm is the molar volume.
V = m * Vm / M.
V = 22.4 * 72/18 = 89.6 liters.
This means that the volume of water is 89.6 liters.
Answer: the volume of water is 86.6 liters.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.