I think it’s D the melting point everything else doesn’t really make sense
<u>Answer:</u> The concentration of radon after the given time is
<u>Explanation:</u>
All the radioactive reactions follows first order kinetics.
The equation used to calculate half life for first order kinetics:
We are given:
Putting values in above equation, we get:
Rate law expression for first order kinetics is given by the equation:
where,
k = rate constant =
t = time taken for decay process = 3.00 days
= initial amount of the reactant =
[A] = amount left after decay process = ?
Putting values in above equation, we get:
Hence, the concentration of radon after the given time is
N(number of moles)=mass/molar mass
10.5=mass
Na=23 (rounded)
Cl=36 (rounded)
Add it together to get the molar mass
=59
Then refer back to the formula
10.5/59
=0.17796
Round that answer
=0.18 mol
Answer:
44 years will take for 10 grams of Actinium to decay until there were only 2.5 grams.
Explanation:
The half life it tell you about the time in which half of the quantity of the isotope will decay.
time (years) quantity of isotope (grams)
0 10
22 5
44 2.5
Answer:
I believe the answer is D
Explanation:
C is not correct