C: 235
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Which statement about both chlorine atoms and chloride ions is correct?
An atom, X, contains 16 protons. Which statement about X is correct?
An atom of which element gains three electrons when it forms an ion?
Fats, carbohydrates and proteins all contain which chemical elements?
The structural formulae of some organic compounds are shown below. Which compounds are alcohols?
Which process is suitable for obtaining the water from an aqueous solution of sugar?