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romanna [79]
3 years ago
7

10. A 38.0-g sample of NaOH is dissolved in water, and the solution is diluted to give a final

Chemistry
1 answer:
Sonbull [250]3 years ago
8 0

Answer:

B.0.558M

Explanation:

M=n/L

n=m/Mm

Mm=NaOH

=23+16+1

=40g/mol

n=m/Mm

= 38/40

=0.95

M=n/L

=0.95/1.70

=0.558

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B is correct

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Answer:

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Explanation:

To solve this problem, first we calculate how many moles of Mn(ClO₄)₂ are contained in 23.640 g of Mn(ClO₄)₂·6H₂O.

Keep in mind that the crystals of Mn(ClO₄)₂ are hydrated, and <em>we need to consider those six water molecules when calculating the molar mass of the crystals</em>.

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Now we <u>proceed to calculate</u>:

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Now we divide the moles by the volume, to <u>calculate molarity</u>:

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3 years ago
If you have 10cm of snow with a volume of 40mL and a density of 0.5 g/mL how many inches of rain is this?
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