What is responsible for the intense heat and pressure in the sun's core?

Nuclear Fusion

Explanation:

This creates heat and protons that can heat up the sun

hey your not cool]      

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.