Calculate the mass of ethylene obtained from 200 with a mass fraction (ethyl alcohol 95%).
| December 11, 2020 | education
We use the mass fraction formula
w = (m in-va / m solution) * 100%, where w is the mass fraction, m in the island is the mass of the substance, m solution is the mass of the solution.
Given: m solution = 200g, w = 95% (0.95)
Find: the mass of the substance.
Decision :
0.95 = m in-va / 200 g
0.95 * 200g = m in-va
190g = m in
Answer: 190g is the mass of ethylene.
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