1) 2.50L (V1) of helium has a pressure of 1.10atm (P1) and is held under isothermic conditions (constant temperature) in a closed container (nl=n2). What is the pressure
of the gas (in atmospheres) if the volume is reduced to 1.05L (V2) ?

no, the red giant is the hottest with 2.00.000.000 degrees celsius. while the white dwarf only 25,000 degrees celsius.

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.