Which of the following types of radiation can penetrate the most deeply into your body?
a - alpha rays
b - beta rays
c - gamma rays
d - proton rays

Proton rays are the rays which can penetrate the most deeply into our body.

D

Explanation

The radiations are surrounding our atmosphere.

The radiations like alpha rays cannot penetrate dead skin cells while the beta rays can penetrate up to some layers of the skin.

The gamma rays are not a beam of energetic particles like alpha and beta rays, they are beam of energies released in order to stabilize the daughter nuclei.

But the rays which can penetrate more deeply in human body is proton rays and X-rays.

The proton rays are the beam of energetic protons which are positively charged.

They are heavy beam of energies.

The proton rays can penetrate the skin as well as reach the damage cells or tumor cells and they can cure them using proton therapy.

first, consult an activity series chart to determine if al is more reactive than fe. it is, so it will replace the fe. now, one can continue with the problem.

next, make sure you have a correctly balanced equation.

3feo + 2al ==> 3fe + al2o3

now, determine which reactant (feo or al) is in limiting supply.

moles feo present = 125 g x 1 mole/71.8 g = 1.74 moles

moles al present = 25.0 g x 1 mole/26.98 g = 0.927 moles

since from the balanced equation, it take 3 mol feo for every 2 mol al, al will be limiting.

you can determine this simply by dividing moles of each by their coefficient in the balanced equation. for example: 1.74/3 = 0.58 and 0.927/2 = 0.464. al is less, so it is limiting.

finally, using the stoichiometry in the balanced eq. determine mass of fe that can be produced from 0.927 moles of al.

0.927 moles al x 3 moles fe/2 moles al x 55.8 g/mole = 77.6 g

the answer would be a