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harina [27]
3 years ago
8

Xa4D6A/viewform?hr_submission=ChglisyXkhUSEAj9|d2MkQsSBwjg24qS6woo

Chemistry
2 answers:
Alex787 [66]3 years ago
8 0

Answer:

4

Explanation:

The solution it option 4, where both the mass and time increase.

Juli2301 [7.4K]3 years ago
4 0
It’s should be option 4
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can someone explain how this is wrong? I don’t think it is wrong but my chem teacher deducted points. so why?
ruslelena [56]

Answer: measure the mass (48.425g) of KCl

Explanation:

To prepare the solution 0.65M KCl we must measure the mass of KCl that would be dissolved in 1L of the solution. This can be achieved by:

Molar Mass of KCl = 39 + 35.5 = 74.5g/mol

Number of mole (n) = 0.65

Mass conc of KCl = n x molar Mass

Mass conc of KCl = 0.65 x 74.5 = 48.425g

Therefore, to make 0.65M KCl, we must measure 48.425g

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MrRissso [65]

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professor190 [17]
Baking soda. to put in the most simple terms..

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Read 2 more answers
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