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UNO [17]
3 years ago
5

Wavelengths are often represented in nm. What is the diameter of a helium (He) atom in

Chemistry
2 answers:
Wittaler [7]3 years ago
8 0

<u>Answer:</u> The diameter of helium atom is 0.1 nm.

<u>Explanation:</u>

We are given:

Diameter of helium atom = 1.0\times 10^{-13}km

To convert this diameter from kilometers to nano meters, we use the conversion factor:

1km=10^{12}nm

Converting the above diameter into nano meters, we get:

\Rightarrow (1.0\times 10^{-13}km)\times (\frac{10^{12}nm}{1km})\\\\\Rightarrow 0.1nm

Hence, the diameter of helium atom is 0.1 nm

lianna [129]3 years ago
5 0

Answer:

Diameter He = 0,1 nm.

Explanation:

Km to nm:

⇒ Diameter He = 1.0 E-13 Km * ( 1000 m / Km ) * (  1 E9 nm / m )

⇒ Diameter He = 0.1 nm

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72.3 c

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3 mol of nitrogen gas reacts with 6 mol of hydrogen gas. how many mol of gaseous product is produced
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- How much power does it take to lift a<br> 1,000 N load 10 m in 20 s?
Mariana [72]

Answer:

"500 Joule/sec" is the right answer.

Explanation:

The given values are:

Force,

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Velocity,

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Time,

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5 0
3 years ago
A fuel cell designed to react grain alcohol with oxygen has the following net reaction:
sertanlavr [38]

Answer:

b. E = 2,28V

Explanation:

The maximum work is the same than ΔG. As ΔG could be written as:

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For the reaction:

CH₃OH(l) + ³/₂O₂(g) → CO₂(g) + 2H₂O(l)

The oxidation state of C in CH₃OH is -2 but in CO₂ is +4, that means transferred electrons are +4 - -2 = <em>6e⁻</em>

Replacing in (1):

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<em></em>

I hope it helps!

8 0
3 years ago
Which statement describes compounds?
sveta [45]
Compounds are represented by chemical formulas
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3 years ago
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