According to the conversation of mass, mass cannot be created or destroyed. This means whatever is done to one side, must be done to the other.
There are 4 Phosphorus atoms on the left, there must be 4 on the right. To do this, you must multiply the P2O3 by 2 to get 4 Phosphorus atoms and 6 Oxygen atoms. Now to balance the Oxygen atoms, you must multiply the oxygen atoms on the left by 3.
1 P4 + 3 O2 —-> 2 P2O3
Lastly, this equation type is synthesis (combination) because two reactants are becoming a single product.
The answer is X Ray
Hope it helps
Out of the available answers, the most likely correct would be that
eventually everyone must sleep due to our need for mental rest. However,
it is not as simple as this, as all of the processes implicated with
mental rest (including the restoration of biological rhythms as
mentioned in an alternative answer) cannot necessarily be summed up in
this way.
