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PIMSO 2022 - Science - Grade 4 - National Round Question 7

PIMSO Science · PIMSO 2022 - Science - Grade 4 - National Round

Question 7

Biofuels are sources of energy from renewable sources. One example is bioethanol, which is ethanol sourced from fermentation of plant products. In one experiment, 1.00 g of liquid ethanol was found to burn with 2.08 g of gaseous oxygen. Complete the following sentence: The total mass of water and carbon dioxide generated from this reaction ____.
  1. is less than 3.08 g
  2. is greater than 3.08 g
  3. is 3.08 g
  4. may vary
  5. 1.00 g