Answer: 30g
Step-by-step explanation:
In this question (t½) of isotope is 40 days, which means that after 40 days half of the sample would have decayed and half would be left as it is.
After 40 days ( first half life) 240 /2 = 120 g decays and 120 g remains left.
After another 40 days ( two half lives or 80 days) 120 /2 = 60 g decays and 60 g remains left .
after three half lives or 120 days, 60/2 = 30g decay and 30 g of the isotope will be left.
Answer:
e= 25.63
Step-by-step explanation:
Just answer it correctly and you won’t have to be confused:)))
Answer:
180 minutes
Step-by-step explanation:
take 1,620 divide it by 9 and there is your answer
hope this helped
Answer:
It should be 13
Step-by-step explanation:
