A fusion reaction can be regarded as the type of reaction that occurs where two lighter elements come together in a type of reaction giving rise to a heavier/more massive element.
A fusion reaction always creates a more massive atomic nucleus (option c).
When the two lighter nuclei comes together in a reaction, a more heavier/massive nucleus is formed but its mass will still be less than the combined mass of the two reactant nuclei.
This also indicates that the left over mass may have been released as energy.
The percentage of hydrogen in C7H18 is calculated as follows: [18/(12*7+1*8)]*100=18% The amount of hydrogen in 5.2moles is given by:(18/100)*5.2=0.94moles
