Aluminum hydroxide with a quantity of substances of 0.5 mol has a mousse …
| February 17, 2021 | education
To find the mass of a substance, knowing the amount of a substance, you must use the formula:
m = v * Mr, where m is the mass of the substance, v is the amount of the substance, Mr is the molecular mass.
The molecular weight of a substance is the sum of the atomic masses of the elements that make up the molecule.
Mr (Al (OH) 3) = 27 + 3 * (16 + 1) = 78 g / mol
m = 0.5 * 78 = 39 g
Answer: 39 g.
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.
