(4) electrolysis requires an external power source <span />
We are given with the composition of the air inside a breathing apparatus which is
<span>78% N2
21% O2
The total pressure at a given depth is 500 kPa
The partial pressure of oxygen is
500 kPa (0.21) = 105 kPa</span>
Alpha particle has a mass of 4 (Two protons and two neutrons)
Neutron has a mass of 1
Beta particle has a mass of about 0 (Electron)
Proton has a mass of 1
So the answer is (2) Beta particle
In order to solve this type of problem, we take a look at the subscript of each element involved in the compound. These values signifies the number of particles present of that element in that compound. The calculation is as follows:
2.4 moles P2O10 ( 2 moles P / 1 moles P2O10 ) = 4.8 moles P
