The graphite of the pencil sits on top of the paper and won't affect the results. If you use ink, it will seep into the paper and itself be subjected to the chromatographic process.
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Answer:
The pressure exerted by the gas is 100kPa
Explanation:
Let's apply the Charles Gay Lussac law, to solve the question.
At constant volume the pressure varies proportionally with the temperature.
P initial / T° initial = P final / T° final
50kPa / 20°C = P final / 40°C
Temperature has increased the double, so the pressure will be increased, the double too.
100 kPa
CH=benzene
Why?
benzene is represented by the empirical formula CH, which indicates that a typical sample of the compound contains one atom of carbon (C) to one atom of hydrogen (H).
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