The formula for table salt is naci. according to the law of definite proportions, this means that the formula for table salt

a: must contain na and ci in some proportion

b: can also be naci2

c: is always naci

d: is likely to be naci in most cases

plzz don't got much time in tile it due

Its always NaCl

Explanation:

We first calculate the heat released:
Specific heat = 3.21 kJ/kgK
Heat released = heat absorbed by calorimeter
Heat absorbed = mcΔT
= 1.9 x 3.21 x 4.542
= 27.7 kJ

Now, we calculate the moles of hexane present:
Moles = mass / Mr
moles = 0.58 / (12 x 6 + 14)
= 0.0067

Heat of combustion = 27.7 / 0.0067 kJ/mol

ΔH(combustion) = 4,134.3 kJ / mol