I think oc means 'original character' but it can be 'of course' as well
Answer:
The percentage of the block contains 15% after 60 years.
Explanation:
Step 1: Formula for half-life time
To calculate the half-life time we will use the following formula:
At = A0 * 1/2 ^(x/t)
With At = the quantity after a time t
A0 = The quantity at time t = 0 (start)
x = time in this case = 60 years
t= half-life time = 22 years
Step 2: Calculate the percentage after 60 years
In this case: after 60 years the percentage will be
A0= 10 * 1/2 ^(60/22)
A0 = 1.5
A0 / At = 1.5 /10 = 0.15
0.15 *100% = 15 %
The percentage of the block contains 15% after 60 years.
The correct answer Organism
It would be:
B. HCl
A metal will react with an acid to form a salt (MgCl2) and H2.
Answer:
1,763°F
Explanation:
I really cant explain it is a little complicated but there is the answer hope it helped you a lot
