The half-life of a radioactive isotope is 20 minutes. What is the total amount of 1.00 g of sample of this isotope remaining aft
er 1 hour?
1 answer:
So since every 20 mins the mass will be cut in half (and that happens 3 times), you have just got to divide 1g by 2, 3 times.
after 20 mins the mass will be .5
after 40 mins the mass will be .25
Answer: After 1 hour the mass will be .125g
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Answer:
The answer is
<h2>1040g</h2>
Explanation:
Density = mass / volume
mass = density × volume
volume = 2cm³
density = 520g/cm³
mass = 2 × 520
= 1040g
Hope this helps you
A double bond between carbon atoms is longer than a triple bond between carbon atoms.
Answer:
Electrons
Explanation:
Because the nucleas is In the middle and the Electrons surround it
I think it is C. its the only one that makes sense
Answer:
The answer is atom.
Explanation:
