3 years ago

What type of molecule polarity exists in NH3, H2O, and HF ?

Chemistry

1 answer:

Jet001 [13]3 years ago

8 0

NH3 and H2O and HF are all polar molecules

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Cerrena [4.2K]

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3 years ago

If you place a glass rod over a burning candle, the glass turns

gladu [14]

A. the wax is a both; 1. physical change-solid to liquid.
2. chemical change- burned to CO2 + H20 + heat + carbon as seen as black on the rod
b. the wick is neither; the wick does not change, just provides conduit for wax to flame
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3 years ago

Gaseous ammonia chemically reacts with oxygen O2 gas to produce nitrogen monoxide gas and water vapor. Calculate the moles of ox

WINSTONCH [101]

Answer : The number of moles of oxygen needed are, 1.5 moles.

Explanation :

The balanced chemical reaction will be:

$4NH_3+5O_2\rightarrow 4NO+6H_2O$

Now we have to calculate the moles of oxygen.

From the balanced chemical reaction we conclude that,

As, 6 moles of water vapor produces from 5 moles of oxygen

So, 1.80 moles of water vapor produces from $\frac{5}{6}\times 1.80=1.5$ moles of oxygen

Therefore, the number of moles of oxygen needed are, 1.5 moles.

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3 years ago

Calculate the volume of a 0.323-mol sample of a gas at 265 K and<br> 0.900 atm.

Katarina [22]

Answer:

V = 7.8 L

Explanation:

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3 years ago

On a hot summer day, air rises most quickly when it is above a

GalinKa [24]

I’d say probably a forest

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3 years ago