Consider the Fusion Reaction The Know Atomic Masses Are $${ } _ { 1 } ^ { 2 } \mathrm { H } : \quad 2.01410 \mathrm { u }$$

question 21

Short Answer

Consider the fusion reaction:
$${ } _ { 1 } ^ { 2 } \mathrm { H } + { } _ { 1 } ^ { 2 } \mathrm { H } + { } _ { 1 } ^ { 2 } \mathrm { H } \rightarrow { } _ { 2 } ^ { 4 } \mathrm { He } + { } _ { 1 } ^ { 1 } \mathrm { H } + { } _ { 0 } ^ { 1 } \mathrm { n }$$
The know atomic masses are
$${ } _ { 1 } ^ { 2 } \mathrm { H } : \quad 2.01410 \mathrm { u }$$
${ } _ { 2 } ^ { 4 } \mathrm { He } : \quad 4.00260 \mathrm { u }$
${ } _ { 1 } ^ { 1 } \mathrm { H } : \quad 1.00783 \mathrm { u }$
${ } _ { 0 } ^ { 1 } \mathrm { n } : \quad 1.008665 \mathrm { u }$
where $1 \mathrm { u } = 1.6605 \times 10 ^{- 27} \mathrm {~kg}$ . What mass of deuterium fuel, ${ } _ { 1 } ^ { 2 } \mathrm { H }$ , is used up in producing $5.6 \times 10^{15} \mathrm {~J}$ of energy by this reaction?

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