Cargi5girladreema
Cargi5girladreema Cargi5girladreema
  • 22-07-2016
  • Chemistry
contestada

CO2. NaCl. HCl. These may all be classified as____. A) elements and compounds B) elements and molecules C) elements and pure substances D) compounds and pure substances

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mpanderla95
mpanderla95 mpanderla95
  • 23-07-2016
I believe the correct answer is D. Compounds and pure substances.
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meerkat18
meerkat18 meerkat18
  • 25-07-2016
First, the substances being mentioned in the given are all compounds. They are combinations of the atoms of different elements in a proper proportion. Furthermore, they are also pure substances as they do not exists as mixtures of two or more compounds. Thus, the answer is letter D. 
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