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3241004551 [841]
3 years ago
5

An atom of sodium (Na) gives up an electron to chlorine (Cl) to form table salt. What type of bond is this?

Physics
1 answer:
Alexxx [7]3 years ago
6 0
Your answer will be C!~
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Mila both 2 kg of cheese in the market to be used for her Mac and cheese recipe. How many pounds does a 2.00 kg of cheese weigh?
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Explanation:

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If the humidity in a room of volume 410 m3 at 25 ∘C is 70%, what mass of water can still evaporate from an open pan? Express you
Keith_Richards [23]

Answer:

m=1864.68\ g

Explanation:

Given:

volume of air in the room, V=410\ m^3

temperature of the room, T=25+273=298\ K

<u>Saturation water vapor pressure at any temperature T K is given as:</u>

<u />p_{sw}=\frac{e^{(77.3450 + 0.0057\times T - \frac{ 7235}{T}  )}}{T^{8.2}}<u />

putting T=298 K we have

p_{sw}=3130\ Pa

<u>The no. of moles of water molecules that this volume of air can hold is:</u>

Using Ideal gas law,

P.V=n.R.T

n=\frac{P_{sw}.V}{R.T}

n=\frac{3130\times 410}{8.314\times 298}

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Currently we have 80% of n, so the mass of 20% of n:

m=(20\%\ of\ n)\times M}

where;

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m=0.2\times 518\times 18

m=1864.68\ g is the mass of water that can vaporize further.

3 0
3 years ago
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