The integrated rate law expression for a first order reaction is
![ln\frac{[A_{0}]}{[A_{t}]}=kt](https://tex.z-dn.net/?f=ln%5Cfrac%7B%5BA_%7B0%7D%5D%7D%7B%5BA_%7Bt%7D%5D%7D%3Dkt)
where
[A0]=100
[At]=6.25
[6.25% of 100 = 6.25]
k = 9.60X10⁻³s⁻¹
Putting values
taking log of 100/6.25
100/6.25 = 16
ln(16) = 2.7726
Time = 2.7726 / 0.0096 = 288.81 seconds
The atomic symbol for an isotope with 4 protons and 5 neutrons is Beryllium ( Be)................
Na: +1 (sodium)
S: -2 (sulfur)
=> Na2S
Explanation:
Nuclear energy and technology are used within food and agriculture to make processes safer and more effective. For example, nuclear-related technologies are used in sterilizing agricultural pests to reduce the use of pesticides. This makes it impossible for the bugs to reproduce, gradually eliminating them.
Speed = frequency x wavelength
So rearrange the formula: wavelength= speed/ frequency
wavelength = (2.998 x 108) ÷ (5.10 x 1014)
