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ser-zykov [4K]
3 years ago
15

BRAINLIEST GIVE AWAY! Please give the correct answer I will reward you with Brainliest!

Chemistry
1 answer:
harkovskaia [24]3 years ago
7 0
Molar mass is the mass of each element multiplied by subscript, then added together.

So, we’ll do

C = 12g x 12 = 144 g
H = 1g x 22 = 22 g
O = 16g x 11 = 176 g

The total of all of these is the molar mass: 342 g in a mol

The amount of mols of each element in each compound is likely equal to its subscripts.

C = 12 mols
H = 22 mols
O = 11 mols

For the atoms, you’ll multiply each one of the above by Avogadro’s number

Avogadro’s Number: 6.02 x 10^23 atoms/mol


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How far does light travel in 4 days
anyanavicka [17]
Light travels at precisely <span>299,792,458 metres every second (abbreviated to 3 x 10^8 metres every second but let's be precise)
There are 60 seconds in every minute (</span><span>299 792 458 x 60 = 17,987,547,480m)
60 minutes in every hour (17,987,547,480 x 60 = 1,079,252,849,000m)
96 hours in 4 days (</span><span>1,079,252,849,000 x 96 =  10,360,827,350,000m)
</span><span>Now let's convert to km to make this number (slightly) more manageable
(</span>10,360,827,350,000 / 1000 = <span>103,608,273,500km)
</span>Light travels <span>103,608,273,500km in 4 days - that's the equivalent of going around the equator of the earth 813,124 times!</span><span>

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5 0
3 years ago
In which phase(s) of matter are the atoms closely packed but still able to slide past each other? gas liquid
lapo4ka [179]
The answer would be liquid.
4 0
3 years ago
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Do you know any of these?
bulgar [2K]
The second one is no
6 0
4 years ago
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What is a logical way that you could begin to investigate why your tire had low air pressure? Look to see if there is a hole in
MrRissso [65]

Answer:

Any of the answers given will work

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I literally just did it.

7 0
3 years ago
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Selenium (Se) has 30 protons and 20 neutrons in each atom, therefore its atomic
allochka39001 [22]

Answer:

30, 50

Explanation:

Hello,

In this since an element's atomic number is equal to the number of protons in its atom, we can infer that selenium's atomic number is 30. Moreover, due to the fact the the neutrons are equal to the atomic mass minus the atomic number or the number of protons, by knowing the number of neutrons we compute the atomic as follows:

neutrons=mass-protons\\\\mass=neutrons+protons\\\\mass=30+20\\\\mass=50a.m.u

Thus, answer is 30, 50.

Best regards.

8 0
3 years ago
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