3 years ago

Please help! brainliest to correct answer!!

Chemistry

2 answers:

belka [17]3 years ago

6 0

The answer is 10 min

ElenaW [278]3 years ago

3 0

Answer: 10 minutes

Explanation:

ln(No/N) = kt

No = 80 mg

N = 10 mg

t = 30 min

solve for k, then

k = 0.693/t1/2

Substitute k from above and solve for t1/2

10 min is correct.

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