This is a Numeric Entry question/It is worth 1 point/You have unlimited attempts

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This is a Numeric Entry question/It is worth 1 point/You have unlimited attempts/There is no attempt penalty 14 Question (1 point) See page 646 Nitrous oxide (N2O) is used as an anesthetic (laughing gas) and in aerosol cans to produce whipped cream. It is also a potent greenhouse gas. The decomposition of N2O is first order. It decomposes slowly to N2 and O2 2N20(g)- 2N2(g) +02(g) 1st attempt See Periodic Table SeeHint How many half-lives will it take for the concentration of the N20 to reach 50 % of its original concentration?

Explanation / Answer

It will take 1 half life
After each half life, concentration becomes half of initial concentration
so, after 1 half life, concentration will become 50 %
after 2nd life it becomes 25 %
after 3rd life it becomes 12.5 % and so on

Answer: 1

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