Find the mass of 0.2 mol Zn (OH) 2.
| March 1, 2021 | education
According to the periodic table, we determine the molar mass of zinc hydroxide: M (Zn (OH) 2) = 65 + 16 * 2 + 1 * 2 = 99 g / mol. Using the formula, we find the mass of the hydroxide: m = n * M, where n is the amount of substance in moles, M is the molar mass in g / mol. m (Zn (OH) 2) = 0.2 mol * 99 g / mol = 19.8 g.
Answer: the mass of Zn (OH) 2 is 19.8 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.
