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Calculate the empirical and molecular formula of unknown compound A which gave an m/z of 181 in the mass spectrum for the molecular ion peak. Elemental analysis by combustion shows the compound is C 53%, O 35.4%, H 3.9% and N 7.7%.

C atomic mass-12 C percentage by composition: 53% Atomic ratio of C: 53/12= 4.417 H atomic mass-1 H percentage by composition: 3.9% Atomic ratio of H:...

Answered by Aminat S. Chemistry tutor
3058 Views

Describe what is meant by a saturated hydrocarbon. (2)

Compound consisting of carbon and hydrogen atoms only (1)Containing only single carbon-carbon bonds/not containing any carbon=carbon double bonds (1)

Answered by Florence P. Chemistry tutor
2070 Views

Explain why Xenon had a lower first ionisation enthalpy than Neon. (3 marks)

Xenon is further down Group 8 of the Periodic Table than Neon, hence has its outermost electrons in higher energy shells further away from the nucleus. Therefore, there are more full inte...

Answered by Alex M. Chemistry tutor
9002 Views

How would you find out whether a reaction is feasible?

For a reaction to be feasible at a given temperature, it must happen spontaneously, which means no extra energy needs to be put in for the reaction to occur. To find out whether a reaction is feasible, yo...

Answered by Sarah G. Chemistry tutor
60419 Views

Which of the Group 7 elements has the highest boiling point and why?

Iodine, because the forces between the iodine molecules are stronger than in the other halogens.

Answered by Amaani I. Chemistry tutor
7388 Views

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