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Sholpan [36]
2 years ago
5

Which of the following are testable?

Chemistry
2 answers:
GREYUIT [131]2 years ago
4 0
Where’s the answers ?
jeyben [28]2 years ago
3 0

you forgot the well answers

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What is the pH of an aqueous solution of HCl with a hydrogen ion
yulyashka [42]

Answer:

pH = 5.17

Explanation:

pH = -log[H+] = -log(6.7 x 10^-6) = 5.17

6 0
2 years ago
water from a town is suspected to contain chloride ions but not sulphate ions . describe how the presence of the chloride ions i
andreyandreev [35.5K]

Answer:

See Explanation

Explanation:

The presence of chloride ions in water can be established by adding dilute trioxonitrate V acid to a sample of the water in drops followed by aqueous silver trioxonitrate V.

If a white precipitate is formed, which is soluble in excess aqueous ammonia solution, then the presence of chloride ion in the water sample is ultimately confirmed.

3 0
2 years ago
Compared to visible light, an electromagnetic wave that has a longer wavelength will also have ________.
Anestetic [448]

Question∵

Compared to visible light, an electromagnetic wave that has a longer wavelength will also have?

Answer:

Hi, There! -Randp12- My Name Is jay I'm here to help! :)

<u><em>The correct answer is lower frequency.</em></u>

Explanation:

Information to  Support My Answer :D

it is visible that wavelength and frequency follow inverse relation. For increase in wavelength, the value of frequency decreases and vice-versa.

Therefore  for higher wavelength, the electromagnetic wave will also have lower frequency.

Hope this helps!

:D

6 0
3 years ago
Calculate the pH during the titration of 20.00 mL of 0.1000 M dimethylamine, (CH3)2NH(aq), with 0.1000 M HCl(aq) after 21.23 mL
Evgesh-ka [11]

The pH value of the solution is mathematically given as

pH=2.35

<h3>What pH value of the solution?</h3>

Question Parameters:

pH during the titration of 20.00 mL of 0.1000 M dimethylamine,

with 0.1000 M HCl(aq) after 21.23 mL of the acid

Generally, the equation for the  Chemical Reaction  is mathematically given as

(CH3)2NH(aq), +Hcl   ---> <---- (CH3)2NH2Cl(aq)

Therefore

HCl=\frac{0.186mol}{41.86}

HCL=0.00444M

WHere

HClaq--->H+(aq)+Cl-(aq)

Hence

H+=0.00444M

pH= -log{H+}

pH=log(0.00444)

pH=2.35

For more information on Chemical Reaction

brainly.com/question/11231920

8 0
2 years ago
Atoms of elements at the top of a group on the periodic table are smaller than the atoms of elements at the bottom of the group.
Serjik [45]

I think the correct answer would be the last one.

7 0
2 years ago
Read 2 more answers
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