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3 years ago

Brainliest 25 pts

Chemistry

1 answer:

Arte-miy333 [17]3 years ago

7 0

Answer:

The Answer is D. principle of original horizontally

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You can obtain a rough estimate of the size of a molecule with the following simple experiment: Let a droplet of oil spread out

mina [271]

Answer:

The diameter of the oil molecule is $4.4674\times 10^{-8} cm$ .

Explanation:

Mass of the oil drop = $m=9.00\times 10^{-7} kg$

Density of the oil drop = $d=918 kg/m^3$

Volume of the oil drop: v

$d=\frac{m}{v}$

$v=\frac{m}{d}=\frac{9.00\times 10^{-7} kg}{918 kg/m^3}$

Thickness of the oil drop is 1 molecule thick.So, let the thickness of the drop or diameter of the molecule be x.

Radius of the oil drop on the water surface,r = 41.8 cm = 0.418 m

1 cm = 0.01 m

Surface of the sphere is given as: a = $4\pi r^2$

$a=4\times 3.14\times (0.418 m)^2=2.1945 m^2$

Volume of the oil drop = v = Area × thickness

$\frac{9.00\times 10^{-7} kg}{918 kg/m^3}=2.1945 m^2\times x$

$x= 4.4674\times 10^{-10} m= 4.4674\times 10^{-8} cm$

The thickness of the oil drop is $4.4674\times 10^{-8} cm$ and so is the diameter of the molecule.

6 0

3 years ago

(a) What human activity is responsible for the formation of smog and acid rain? (b) What kinds of harm does photochemical smog c

Lunna [17]

but u have a good person to talk about that is a bit of an act like I swear to God that

Explanation:

can you send the invoice to the b account on your website so I just put in a sec and I can send it here and send you the info for my credit card

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3 years ago

What protects the Earth from meteorites and the sun's rays? (4 points)

inna [77]

I believe the answer is D. The atmosphere, different layers of the atmosphere can help in different ways! The stratosphere helps protect us from the sun's rays; The Mesophere is what helps protect us from meteorites! It's so cold that they burn up in that area.

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3 years ago

Which of the following is not part of our solar system?

andreyandreev [35.5K]

Answer:

none of the above

Explanation:

4 0

3 years ago

Read 2 more answers

If a solution has a pOH of 8.71, what is the [H+]?

TEA [102]