When hydrogen is burned as a fuel, the primary waste product produced is

Explanation:

A combustion reaction is defined as the one which when reacts with oxygen atom results in the formation of carbon dioxide and water.

As most of the fuels are hydrocarbons hence, they also produce carbon dioxide and water upon combustion.

And, when hydrogen is burned as a fuel then the reaction is as follows.

Thus, we can conclude that when hydrogen is burned as a fuel, the primary waste product produced is .

percent abundance for cu-63 can be shown as:

63 x + 65 (1-x) = 62.9296

65 - 62.9296 = 2 x

x = 1.035

thus, percent abundance for cu-63 is 1.035

percent abundance for cu-65 can be shown as:

63 x + 65 (1-x) = 64.9278

65 - 64.9278 = 2 x

x = 0.0361

thus, percent abundance for cu-63 is 0.0361

the mass spectrum of cu-63 showing the intense peak as, this isotope is found in nature more abundantly around 92.38 % in comparison to cu-65 which is found 62.58 % naturally