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Figure 1 shows a maxwell-Boltzmann distribution of molecular energies of a sample of gas at a fixed temperature. (a) Label the y axis. (b) On Figure 1, sketch a maxwell-Boltzmann distribution for the same sample of gas at a lower temperature.

(a) number of molecules (1 mark).(b) maxima is displaced up and to the left (1 mark)all of the following: (1 mark)curve starts at the origin,candidate’s curve crosses the original line only once,candidate’s ...
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Answered by Mike S. • Chemistry tutor
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Why does the ionisation energy of period 2 elements increase along the period, but drop for boron and oxygen?

There are three properties to consider when looking at ionisation energy:Atomic chargeAtomic radiusElectron shieldingGoing along a period, the atomic charge increases as there are more protons in the nucleus...
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Answered by Abbie L. • Chemistry tutor
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State and explain how the attraction between nuclei and outermost electrons varies across group 3 (2 marks)

Attraction between the nucleus and the outer electrons increases across a group because the proton number increases and the atomic radius decreases due to increased nuclear charge.Across a group shielding re...
AD
Answered by Amy D. • Chemistry tutor
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Write an equation for the incomplete combustion of dodecane to produce gaseous products only.

C10H22 (l) + 11.5O2 (g) --> 10CO(g) + 11H20 (g)Incomplete combustion so the products are CO and H2O, remember to include state symbols as the question asks for gaseous products.
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Answered by Fawcett G. • Chemistry tutor
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Pure water has a boiling point of 100 °C and a freezing point of 0 °C. What is the boiling point and freezing point of a sample of aqueous sodium chloride?

boiling point 102°C freezing point –2°C We shall now look at the molecular origin of the lowering of the freezing point and elevation of the boiling point. First of all, we know that the entropy of a gas is ...
NE
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