An accident happens in the lab of Professor Utonium, and a radioactive element X is released in the form of a gas at around 4:00 am. Element X has a short half-life (25 min), and the lab would be considered safe when the concentration of X drops by a factor of 10. Considering the decomposition of element X is of first-order, what is the earliest time Professor Utonium can come back to do experiments in the lab

5:22 am

Explanation:

The gas X decays following a first-order reaction.

The half-life () is 25 min. We can find the rate constant (k) using the following expression.

We can find the concentration of X at a certain time () using the following expression.

where,

: initial concentration of X

t: time elapsed

The earliest time Professor Utonium can come back to do experiments in the lab is:

4:00 + 82 = 5:22 am

answer: i have one answer

acids are substances that ionize (break off) in an aqueous solution to produce hydrogen (h+) ions

explanation:

hope this and sorry i could only come up with one answer!