Answer my answer is 9 :please give me brainliest
Step-by-step explanation:
You divide 6 by 2/3
Answer:
Amount of Niobium-91 initially
= 300/91 =3.2967mol
2040 years = 3 ×680 = 3 half-lives
therefore, amount left = 0.4121mol
mass of Niobium-91 remaining = 0.4121 ×91 =37.5g
Please give brainliest
Answer:
The answer is 162.5
Step-by-step explanation:
you divide 2 by 3 and then figure out how many examples where given to find the average and multiply by that much and you get the answer.
Answer:
-2/9
Step-by-step explanation:
Answer:
0.0006256
Step-by-step explanation:
