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Bogdan [553]
3 years ago
10

NEED HELP ASAP!!!!!!!!!!!!!!!!!!!!!!

Chemistry
1 answer:
Paraphin [41]3 years ago
7 0
<h2>Answer:  C) 1s²2s²2p⁶</h2>

<h3>Explanation:</h3>

A noble gas has 8 electrons between the p and s orbitals of the outer shell. Helium is the exception because it only has two electrons.

<h3>                       ∴  1s²2s²2p⁶ is the noble gas (neon)</h3>

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8 0
3 years ago
What is the molarity of a solution containing 17.0 g of KCl in 213 mL of KCl solution?
Anarel [89]

Answer:

1.070MKCl

Explanation:

So we know that the original formula is M= n/L (n being moles of solute, L being liters of solvent)

Since we do not have liters in this problem, we would need to convert  milliliters to liters

<u>213 mL= 0.213 L</u>

We then see that we do not have moles, but we do have a mass, being <u>17.0 g.</u> we would need to convert these grams to moles, giving us <u>0.228 mol.</u>

Then, you would plug in <u>0.228 for your n</u>, and now you are ready to solve your original formula, plugging everything in.

M=n/L

M=0.228 mol/0.213L

M= 1.070MKCl

I know this was long, but I hope this helps (:

5 0
3 years ago
How many lead atoms are in a cube of lead that has a volume of 2.18 cm3 if the density of lead is 11.3 g/cm3?
Anit [1.1K]
10000000.................
3 0
4 years ago
What did the photoelectric experiment demonstrate?
exis [7]

Answer: C. Light can cause electrons to be released from the surface of a metal

Explanation:

4 0
3 years ago
How many grams of carbon dioxide are produced by the combustion of 75.3 g of octane (C8H18)? (answer rounded to nearest whole nu
a_sh-v [17]

Answer:

232 g CO2

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Hope this helps!

6 0
3 years ago
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