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Radda [10]
3 years ago
15

How can the pH of a solution be calculated if the pOH is known?

Chemistry
2 answers:
daser333 [38]3 years ago
4 0

the answer is d guys


dybincka [34]3 years ago
3 0

Answer:

by subtracting the pOH by 14

Explanation:

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Answer:

Because it can cause health problems or injuries to our sense organs.

Explanation:

Chemicals in the laboratory are made up of different constituents, which may be dangerous or injurious to health. This is the reason why safety measures or precautions have to be taken when working in the laboratory. One of those safety measures is that "one should never use taste, touch, or smell to identify an unknown chemical".

This is so because a chemical that is unknown amounts to the fact that what such chemical contains is unknown, hence, the chemical might have the ability to cause harm or injuries to the sense organ. For example, a conc. acid that is tasted will burn the tongue etc.

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Which statement best describes the movement of atoms in solid
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3 years ago
a heliox tank contains 32% helium and 68% oxygen. the total pressure in the tank is 395 kPa. What is the partial pressure of oxy
trapecia [35]

Answer:

Pp O2 = 82.944 KPa

Explanation:

heliox tank:

∴ %wt He = 32%

∴ %wt O2 = 68%

∴ Pt = 395 KPa

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assuming a mix of ideal gases at the temperature and volumen of the mix:

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⇒ Pi/Pt = ni/nt = Xi

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∴ Xi: molar fraction (ni/nt)

⇒ 0.68 = mass O2/mass mix

assuming mass mix = 100 g

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∴ molar mass He = 4.0026 g/mol

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⇒ Pp O2 = (X O2)(Pt)

⇒ Pp O2 = (0.2099)(395 KPa)

⇒ Pp O2 = 82.944 KPa

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3 years ago
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