Answer: Hmmmmm that's crazy....
There are a couple of equations one could use for this type of problem, but I find the following to be the easiest to use and to understand.
Fraction remaining (FR) = 0.5n
n = number of half lives that have elapsed
In this problem, we need to find n and are given the FR, which is 1.56% or 0.0156 (as a fraction).
0.0156 = 0.5n
log 0.0156 = n log 0.5
-1.81 = -0.301 n
n = 6.0 half lives have elapsed
Explanation:
Just wanted to help. Hopefully it's correct wouldn't want to waster your time ;)
Answer:
the change of NH3 conversion with temperature and 02 amount without H2 at atmospheric pressure and 800ppm inlet HN3 concentration:...
Answer:
b. 45 u
Explanation:
the mass of an atom is equal to the protons plus neutrons:
26+19=45
hope this helps :)
V1 = 30L, P1 = 200mmHg, T1 = 10C
V2 = ??, P2 = 300mmHg, T2 = 25C
Use combined gas law:
P1V1/T1 = P2V2/T2
V2 = P1V1T2/P2T1
V2 = (200)(30)(25)/(300)(10)
V2 = 150,000/3,000 = 50 L