Calculate the mass of oxygen contained in so many molecules. How much does 20 grams of hydrogen contain?

univerkov | November 22, 2020 | education

Find n H2
n = m / M
n (H2) = 20g / 2g / mol = 10mol
Then 02 is also 10 mol
Then we find the mass О2
m (O2) = 10mol * 32g / mol = 320g
Answer: 320 grams

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