Please work out all the problems on this page, no links, no i don't knows please do not take advantage of me or my points please actually answer these questions

Stage in which a star’s outer layers have started to cool and grow outward?

Can someone me with 3 and 4 plz. this is for masteries test.

Given the following information: mass of proton = 1.00728 amu mass of neutron = 1.00866 amu mass of electron = 5.486 × 10^-4 amu speed of light = 2.9979 × 10^8 m/s calculate the nuclear binding energy (absolute value) of 3li^6. which has an atomic mass of 6.015126 amu. j/mol.