Answer:
Isotopes of an element share the same number of protons but have different numbers of neutrons. ... This means that all three isotopes have different atomic masses (carbon-14 being the heaviest), but share the same atomic number (Z=6).
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
They are called spectator ions.
The solution is unsaturated.
Supersaturated is when you put so much powder it no longer dissolves.
