The is that part of the Sun where the energy transfers from the super hot core to the cooler outer layers of the Sun. a
nuclear fusion
b
hydrogen and helium
c
radiative envelope
d
nuclear reactor

A2.5% (by mass) solution concentration signifies that there is a 2.5 % (by mass) solution concentration signifies that there is blank of solute in every 100 g of solution. of solute in every 100 g of solution