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Science Clinic => Chemistry => Topic started by: Mr. Wonderful on Nov 18, 2019

Title: If the density of ethanol, C2H5OH, is 0.789 g mL-1. How many millilitres of ethanol are needed to ...
Post by: Mr. Wonderful on Nov 18, 2019

Question 1

Dinitrogen monoxide gas decomposes to form nitrogen gas and oxygen gas. How many grams of oxygen are formed when 10.0 g of dinitrogen monoxide decomposes?
◦ 0.275 g
◦ 14.5 g
◦ 3.64 g
◦ 7.27 g

Question 2

If the density of ethanol, C2H5OH, is 0.789 g mL-1. How many millilitres of ethanol are needed to produce 15.0 g of CO2 according to the following chemical equation?

C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(l)

◦ 839.8 mL
◦ 9.95 mL
◦ 6.19 mL
◦ 19.9 mL

Title: If the density of ethanol, C2H5OH, is 0.789 g mL-1. How many millilitres of ethanol are needed to ...
Post by: irishcancer18 on Nov 18, 2019

Answer 1

3.64 g

Answer 2

9.95 mL