Answer:
I believe that the answer is none, chemistry is important in all of these subjects.
Temperature,as the temperature and therefore, kinetic energy,of a gas changes the ,the RMS speed of the gas molecules also changes
<span>1.
</span>For this problem, we use the formula for
radioactive decay which is expressed as follows:<span>
An = Aoe^-kt
where An is the amount left after time t, Ao is
the initial amount and k is a constant.
We calculate as follows:
An = Aoe^-kt
0.5 = e^-k(1.4x10^10)
k = 4.95x10^-11
An = Aoe^-kt
25 = Aoe^-</span>4.95x10^-11<span>(2.8x10^10)
Ao = 100 g</span>
The percentage by mass of water in Na2CO3.10H2O from the calculation is 62.9%
<h3>What is percentage by mass?</h3>
The term percentage by mass refers to the amount of a particular moiety by mass in a molecule.
In this case, we know that the molar mass of Na2CO3.10H2O is 286 g/mol the molar mass of the 10 moles of water is 180 g/mol hence the percentage by mass of water in the compound is; 180 g/mol /286 g/mol * 100/1 = 62.9%
Learn more about percentage by mass: brainly.com/question/16885872
#SPJ2
