3 years ago

Question: Carbon-11 has a half-life of about 20 minutes. If we start with 200 grams, how

1 answer:

3 0

Answer:

C). 0.39 grams

Step-by-step explanation:

First find how many half-lifes are in 3 hours:

3 hours ÷ 20 minutes = 9 half-lifes

Find the total left:

0.5^9*200 ≈ 0.39

You might be interested in

GalinKa [24]

Answer:

Step-by-step explanation:

5 0

3 years ago

Schach [20]

Answer:

Step-by-step explanation:

$0.75x - 25 = 35 \\ 0.75 x = 35 + 25 \\ 0.75 x = 60 \\ x = \frac{60}{0.75} \\ x = \frac{60 \times 100}{75} \\ x = 4 \times 20 \\ x = 80$

plz...

mark it as a brilliant answer

6 0

4 years ago

Ymorist [56]

Answer:

hope it helps.

7 0

3 years ago

astra-53 [7]

Answer:

none of the above

Step-by-step explanation:

8 0

3 years ago

Artemon [7]

Those lines mean absolute value, which is how many spaces it is away from 0. the absolute value of 6 is 6 and the absolute value of -6 is 6

5 0

4 years ago