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16.01.2020 •
Chemistry
What part of the statement below is incorrect? rewrite the statement such that t displays the correct reasoning behind why nonpolar molecules do not dissolve in water. (mark all that apply) water molecules repel nonpolar substances away from itself. a. repel needs to be replaced with "do not attract" b. nonpolar needs to be replaced with "polar c. away needs to be replaced with "towards" d. the corrected statement should read: nonpolar compounds such as lipids attract eachother and repel polar molecules like water. e. the corrected statement should read: water molecules do not interact with nonpolar compounds, which become oriented away from water. f. the corrected statement should read: water molecules attract polar and nonpolar compounds, but the nonpolar compounds are "sticky" so they stick together.
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Ответ:
0.9 g of CO will be produced.
Explanation:
A diamond is formed of C atoms. When it is burned, it undergoes a combustion reaction. If the product is CO the combustion is incomplete. The reaction is:
C(s) + 0.5 O₂(g) ⇄ CO(g)
A carat is a unit of weight for diamonds where 1 ct = 200 mg. So, we have 2 ct = 400 mg = 0.4 g of carbon.
In the balanced equation we can see that when 12 grams of C are burned, 28 grams of CO are formed. This is the stoichiometric relationship that we will use to find out the amount of CO formed when 0.4 g of carbon are burned: