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Chemistry, 24.02.2021 20:10 kingkuka1700
15. (05.01 MC) Which of the following is most likely to happen if the cell membrane does not function properly? (5 points) The cell will not be able to store waste. The cell will not be able to eliminate waste. The cell will absorb oxygen during photosynthesis. The cell will absorb carbon dioxide during respiration.
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Chemistry, 22.06.2019 11:40
Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)
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15. (05.01 MC) Which of the following is most likely to happen if the cell membrane does not functio...
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