A 30 gram sample of a substance that's used to sterilize surgical instruments has a k-value of 0.1235. Find the substances half life in days. Round your answer to the nearest tenth.

Answer : The substances half life in days is, 5.6 days.

Step-by-step explanation :

Half life : It is defined as the amount of time taken by a radioactive material to decay to half of its original value.

All radioactive decays follow first order kinetics.

The relation between the half-life and rate constant is:

where,

k = rate constant = 0.1235 per days

= half-life

Now put all the given values in the above formula, we get:

Thus, the substances half life in days is, 5.6 days.

11

step-by-step explanation:

32.50-7.50=25

225/25=11

45

step-by-step explanation: