The number of atoms in one mole of any substance is measured by Avogadro's number. The value of Avogadro's number is 6.023 x 10 ^23. It is named after scientist Avogadro who proposed this number. 12 grams of carbon-12 represents 1 mole of carbon-12. For this reason, the number of atoms present in 1 mole of any substance is 6.023 x 10 ^23. Therefore, the number of atoms present in 1 mole carbon-12 is 6.023 x 10^23.
(Answer) This unit is the number of atoms in 12 grams of carbon-12 and known as Avogadro's number.
Answer:
for the eqn it should be 2NaCl----> 2Na+ Cl2
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Answer:
a) The half life of the radioactive sample is 0.22 years.
b) It will take 0.16 years to sample to decay to 40% of its original amount.
Explanation:
a) Initial amount of radioactive substance =
Final amount of radioactive substance after 1 year=
Decay constant = k
Decaying of radio active sample follows first order kinetics:
Half life of the sample =
The half life of the radioactive sample is 0.22 years.
b)
Initial amount of radioactive substance =
Final amount of radioactive substance after t years=
Decay constant = k =
Decaying of radio active sample follows first order kinetics:
Solving for t:
t = 0.1587 years ≈ 0.16 years
It will take 0.16 years to sample to decay to 40% of its original amount.
Answer:
Explanation:
Okay I just took this test and I will just tell you now
D is not the answer.
Sorry I couldn't be more help