Answer:
The time it'd take for the element to have 15 g of mass is approximately 68 min.
Step-by-step explanation:
The radioactive decay of a substance is given by the following formula:
Since the element has a half life of 12 minutes, this means that after this time the mass of the element will be half of it was originally, therefore:
Therefore the mass of the element is given by:
If the initial mass is 760 g and the final mass is 15 g, we have:
The time it'd take for the element to have 15 g of mass is approximately 68 min.Step-by-step explanation:
Answer:
x = -6.25
Step-by-step explanation:
-4(1.75 + 1x) = 18
1.75 + 1x = 18/-4
1.75 - 1.75 + x = -4.5 - 1.75
x = -6.25
Answer: x = -6.25
You will made m the subject.. so m=F/a. I hope it helped :)
