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mote1985 [20]
3 years ago
11

Precautions when using a laboratory thermometer​

Chemistry
1 answer:
motikmotik3 years ago
3 0

Answer:

It should be kept upright not tilted.

Bulb should be surrounded from all sides by the substance of which the temperature is to be measured.

The bulb should not touch the surface of the container.

Hope this helps

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what volume, in liters, will 6.32 × 10^2 of air occupy if the density of air is 1.29 g/L? Express your answer in scientific nota
xz_007 [3.2K]

4.90× 10^2 L

I am guessing that the mass of the air is 6.32 × 10^2 <em>g</em>. Then,

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3 years ago
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What is the pOH of 0.5 M KOH?
jenyasd209 [6]

Answer:

pOH = 0.3

Explanation:

As KOH is a strong base, the molar concentration of OH⁻ is equal to the molar concentration of the solution. That means that in this case:

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With that information in mind we can<u> calculate the pOH </u>by using the following formula:

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3 years ago
Calculate the number of moles in a 14.5 gram sample of C4H10.
cricket20 [7]
Moles= mass divided by molar mass
Molar mass= 12.01(4) + 1.01(10)
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Moles=14.5g / 58.14g/mol
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Therefore there are approx 0.249 moles in a 14.5g sample of C4H10
6 0
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I know the paper is blurry but can anyone explain any of the questions from 76-80?
Whitepunk [10]

Answer:try to make a good pic please I have ideas about the topic

3 0
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Qu 4.
Anna11 [10]

Answer:

It's the second one down.

Explanation:

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Number of Protons: 79

Number of Neutrons: 197 - 79 = 118

Number of electrons: = number of protons = 97

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