Chemistry

Chemistry, 08.07.2019 00:10, staz13wiggins

What is the approximate percent by mass of oxygen in c2h4o2

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Chemistry, 03.07.2019 17:40, qaqpuk14

Alaboratory manual gave precise instructions for carrying out the reaction described by the chemical equation, c2h6o + o2 c2h4o2 + h2o. it stated that if you bubble oxygen gas through a solution containing the reactant for 24 hours then the yield of c2h4o2 would be 7.50% of the theoretical amount. if you desire to produce 700. grams of the c2h4o2 in a single batch, how many kg of c2h6o should you begin with?

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Chemistry, 22.07.2019 02:30, youngsunc02

The mass percent of oxygen in pure glucose, c6h12o6 is 53.3 percent. a chemist analyzes a sample of glucose that contains impurities and determines that the mass percent of oxygen is 49.7 percent. which of the follow impurities could account for the low mass percent of oxygen in the sample?

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Chemistry, 11.11.2019 05:31, queenkendra16

Carbohydrates are compounds contains carbon, hydrogen, and oxygen in which the hydrogen to oxygen ratio is 2: 1. a certain carbohydrate contains 40.0 percent carbon by mass. calculate the empirical and molecular formula of the compound if the approximate mass is 178grams

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Biology, 12.11.2019 21:31, davilynealvarado1234

Which part or parts of the paragraph indicate that oxygen is important to life? oxygen is the most abundant element on earth. as the largest component of most rock-forming minerals, oxygen comprises 46.6 percent of the mass of earth’s crust and 94 percent of its volume. the human body is mostly water. sixty-five percent of the mass of the human body is oxygen. human beings inhale oxygen and exhale carbon dioxide.

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