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Naya [18.7K]
3 years ago
9

How many mole are in 72.9g of HCI

Chemistry
1 answer:
fredd [130]3 years ago
3 0
Divide by the molar mass of HCl which is 36.5g/mol grams cancels out and you are left with 1.99 mol.
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A 72.0 mL aliquot of a 1.40 M solution is diluted to a total volume of 248 mL. A 124 mL portion of that solution is diluted by a
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Explanation:

According to the dilution law,

M_1V_1=M_2V_2

where,

M_1 = molarity of stock solution = 1.40 M

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M_2 = molarity of diluted solution = m

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Now 124 mL portion of this prepared solution is diluted by adding 133 mL of water.

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where,

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M_2 = molarity of diluted solution = m

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0.41\times 124=m\times 257

m=0.20M

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8 0
3 years ago
Can some body plz help correct me or correct the true or false answers I did wrong. I’m not sure there right :(
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4 3 and 5 are wrong:)

4 is true and 5 is false

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Hope this helped!

(learned these this year so I didn't forget them:)

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