C. carbon
sodium is an
oxygen is o
cl is chlorine
Answer:
If a fluorine atom gains an electron, it becomes a fluoride ion with an electric charge of -1.
Explanation:
hope this helps
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Answer:
- last option: none of<u> the above.</u>
Explanation:
Describing a solution as<em> concentrated</em> tells that the solution has a relative large concentration, but it is a qualitative description, not a quantitative one, so this does not tell really how concentrated the solution is. This is, the term concentrated is a kind of vague; it just lets you know that the solution is not very diluted, but, as said initially, that there is a relative large amount (concentration) of solute.
One conclusion, of course, is that <u>the solute is soluble</u>: else the solution were not concentrated.
On the other hand, the terms saturated and <em>supersaturated</em> to define a solution are specific.
A saturated solution has all the solute that certain amount of solvent can contain, at a given temperature. A <u>supersaturated solution has more solute dissolved than the saturated solution</u> at the same temperature; superstaturation is a very unstable condition.
From above, there is no way that you can conclude whether a solution is supersaturated or not from the statement that a solution is concentrated, so the answer is<u> none of the above</u>.
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Answer:
300 kg
Explanation:
The number of people in the city, p = 400,000
The number of capsules of oseltamivir each person consumes per day, n = 2 capsules
The number of days each person consumes the oseltamivir capsules, t = 5 days
The mass of oseltamivir in each capsule, m = 75 mg
The mass of oseltamivir needed to treat all the people in the city, <em>M</em>, is given as follows;
M = n·t·m·p
∴ M (in milligrams) = (2 × 5 × 75 × 400,000) mg = 300,000,000 mg
1,000,000 mg = 1 kg
∴ 300,000,000 mg = 300 kg
The mass of oseltamivir needed to treat all the people in the city, <em>M</em> = 300 kg
