Edexcel AS Chemistry - Moles - Flashcards in A Level and IB Chemistry

28 tonnes of ethene (rmm 28) produces 43.7 tonnes of ethanol (rmm 46) in the equation: C2H4 + H2O --> C2H5OH. What is the percentage yield?

95%

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An organic compoun contains 38.4% Carbon, 4.8% Hydrogen and 56.8% Chlorine. What is the empirical formula?

C2H3Cl

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Using the equation: 2 H2O2 ---> 2 H2O + O2. What mass of hydrogen peroxide is required to give 8g of oxygen gas?

17g

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In what order are the best steps taken to produce dry crystals from a solution?

Filter, Boil to half volume, Cool and Crystalise, Pad dry

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In an experiment, a student obtained 4.78g. Therotically, the student should of obtained 5.29g. what is the percentage yield?

90.8%

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Why is atom economy important to industry?

They want a high atom economy for a high profit

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Other cards in this set

An organic compoun contains 38.4% Carbon, 4.8% Hydrogen and 56.8% Chlorine. What is the empirical formula?

C2H3Cl

Using the equation: 2 H2O2 ---> 2 H2O + O2. What mass of hydrogen peroxide is required to give 8g of oxygen gas?

In what order are the best steps taken to produce dry crystals from a solution?

In an experiment, a student obtained 4.78g. Therotically, the student should of obtained 5.29g. what is the percentage yield?

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