[填空题]
In the net reaction,, for the protoo svvbn43il34n-proton cycle in the Sun, the neutrinos p-puf ;d3nq.;ih1wke w zfk6;escape from the Sun with energy of about 0.5 MeV. The remaining energy, 26.2 MeV, is available within the Sun. Use this value to calculate the "heat of combustion" per kilogram of hydrogen fuel and compare it to the heat of combustion.;fki;61 h-;en kw z3dw uppqf of coal, about $3 \times 10^7\ \text{J/kg}$. $ \times 10^{-14}\ \text{J/g}$
This is about $ \times 10^7$times the heat of combustion of coal.
