Answer:
reactants : before arrow sign
: CH4 and O2
product : after arrow sign
: CO2 and H2O
the answer is the second option
Answer:
Yes a chemical reaction is taking place.
Explanation:
There is a change in temperature along with bubbling. All signs of a chemical reaction.
Answer: The mole fraction of hexane is 0.617
Explanation:
According to Raoult's law, the vapor pressure of a component at a given temperature is equal to the mole fraction of that component multiplied by the vapor pressure of that component in the pure state.
and 
where, x = mole fraction in solution
= pressure in the pure state
According to Dalton's law, the total pressure is the sum of individual pressures.






Thus mole fraction of hexane is (1-0.383) = 0.617 .
METALS ARE MAGNETIC(and maybe metalloids)