A meteorite contains 80 grams of radioactive chemical 'Q' when it lands on the Graeters in Worthington. By the time NASA gets to the site (18 hours later), the sample is only 10 grams. What is the half-life of Q

Explanation:

Half life is when half of the total material gets decayed.

During first half life:

Radioactive chemical Q = 80 g / 2 = 40 g

During second half life:

Radioactive chemical Q = 40 g / 2 = 20 g

During third half life:

Radioactive chemical Q = 20 g / 2 = 10 g

Hence, we get to know that three half lives had been passed when NASA gets to the site.

If:

3 half lives = 18 hours (as indicated)

Divide both sides by 3

1 half live = 18 / 3 hours

1 half life = 6 hours

Hope this helped!

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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!