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- The concentration of a solution can also be expressed as moles/litre.
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- @Prompt
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- #b#crHow many moles of NaCl are there in 5.85g?
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- No of moles = #^mass = #^5.85 = #[N]
- #tRMM #t#[N]
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- '@Answer 58.5,0.1
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- '@Feedback Wrong
- '#bNo#b, the RMM of NaCl is 23 + 35.5 = 58.5Dividing 5.85 by 58.5
- 'gives you 0.1 moles.
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- '@Animation BoseGrim
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- '@Feedback Correct
- '#bCorrect!#b
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- When the sodium chloride is dissolved in water we have a
- solution with a concentration of 0.1moles/litre.
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- This is usually written as 0.1mol dm-3 and is known as the
- Molarity.
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- When the volume of solution is not one litre it is important to
- scale the number of moles up or down.
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- ]mol dm-3
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