Classify each process according to direction of heat flow.
Evaporation of alcohol from skin: liquid C3H2O +5.2 kJ → vaporized C3H2O
Burning of propane in a gas grill: C3H3 +502 3C02 + 4H2O + 1652 kJ
Oxidation of iron to form rust: 4Fe + 302 → 2Fe2O3 + 2221 kJ
DONE
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Intro

heat flows in

heat flows out

heat flows put

Explanation:

your answers are a,b,,e and f

i hope this

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.