2 years ago

5. A fireplace fire heating a room on a cold day is an example of what type of heat

Chemistry

1 answer:

Inessa [10]2 years ago

8 0

Answer:

I think the answer is C- radiation

Explanation:

If its not C its A Hope this helps forgive me if i'm wrong :/

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3 years ago

At what temperature will 41.6 grams N, exert a pressure of 815 mmHg in a

ratelena [41]

None of the given options are correct, and the correct answer is 174 K.

<u>Explanation:</u>

Mass of N = 41.6 g

Moles = $$\frac{given mass}{molar mass}$

= $$\frac{41.6 g}{28 g/ mol}$ = 1.5 moles

Pressure, P = 815 mm Hg = 1.07 atm

Volume, V = 20 L

R = gas constant = 0.08205 L atm mol⁻¹ K⁻¹

Temperature, T = ? K

We have to use the ideal gas equation,

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by rearranging the equation, so that the equation becomes,

T = $$\frac{PV}{nR}$

Plugin the above values, we will get,

T = $$\frac{1.07 \times 20}{1.5 \times 0.08205}$

= 174 K

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