1. A certain first-order reaction has a half-life of 75 minutes. A. Find the rate constant, including the correct units.
B. How long would it take for the reaction to reach 62% completion?

2.Using the same half-life and %-completion values from #2, find the rate constant (with the correct units) and the time needed to reach 62% completion if the reaction was second-order and had a half-life of 75 minutes.

3. A certain reaction has the following form:
aA -> bB

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explanation:

i think option no d is the correct answer

explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.