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tatiyna
3 years ago
7

_________________________________ data are related to descriptive information that is expressed as a

Chemistry
2 answers:
andreyandreev [35.5K]3 years ago
4 0
The answer would be quantity date for both of them message me if you don’t understand I would be happy to answer any question.
ICE Princess25 [194]3 years ago
3 0

Answer:

qualitative data

and

quanitative data

Explanation:

hope this helps and PLZ brainliest thank you

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Surface tension under water results from greater attraction of liquid molecules to each other, due to a process called cohesion, than to molecules in the air, due to a process called adhesion.

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Why can't the reaction, ZnCl2 + H2 → Zn + 2HCI, occur naturally?
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2 years ago
A sample of an ionic compound NaA, where A- is the anion of a
vitfil [10]

Answer:

a) Kb = 10^-9

b) pH = 3.02

Explanation:

a) pH 5.0 titration with a 100 mL sample containing 500 mL of 0.10 M HCl, or 0.05 moles of HCl. Therefore we have the following:

[NaA] and [A-] = 0.05/0.6 = 0.083 M

Kb = Kw/Ka = 10^-14/[H+] = 10^-14/10^-5 = 10^-9

b) For the stoichiometric point in the titration, 0.100 moles of NaA have to be found in a 1.1L solution, and this is equal to:

[A-] = [H+] = (0.1 L)*(1 M)/1.1 L = 0.091 M

pKb = 10^-9

Ka = 10^-5

HA = H+ + A-

Ka = 10^-5 = ([H+]*[A-])/[HA] = [H+]^2/(0.091 - [H+])

[H+]^2 + 10^5 * [H+] - 10^-5 * 0.091 = 0

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6 0
3 years ago
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