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Advocard [28]
4 years ago
8

Describe the three ways heat can be transferred-radiation, conduction, and convection

Chemistry
1 answer:
hjlf4 years ago
8 0
An example of radiation can be from a fire since the firs is letting off heat without contact. An example of convection can be boiling water since there are molecules moving in the water (a fluid). An example of conduction can be a tea spoon in a cup of hot tea, the heat is getting transferred froma hot object to a cool object.
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Use the ideal-gas law to estimate the number of air molecules in your physics lab room, assuming all the air is N2. Assume a roo
stiv31 [10]

Answer:

4.13×10²⁷ molecules of N₂ are in the room

Explanation:

ideal gases Law → P . V = n . R . T

Pressure . volume = moles . Ideal Gases Constant . T° K

T°K = T°C + 273 → 20°C + 273 = 293K

Let's determine the volume of the room:

18 ft . 18 ft . 18ft = 5832 ft³

We convert the ft³ to L → 5832 ft³ . 28.3L / 1 ft³ = 165045.6 L

1 atm .  165045.6 L = n . 0.082 L.atm/mol.K . 293K

(1 atm .  165045.6 L) / 0.082 L.atm/mol.K . 293K = n

6869.4 moles of N₂ are in the room

If we want to find out the number of molecules we multiply the moles by NA

6869.4 mol . 6.02×10²³ = 4.13×10²⁷ molecules

4 0
3 years ago
Two seventh grade students are studying how sound waves are transferring energy.
garik1379 [7]

Answer:

Hit the pot faster at a higher frequency

Explanation:

I feel like it would be because it makes more sense to me but I really have no clue tbh

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3 years ago
How to writhe the balanced chemical equation
mariarad [96]
Get an equal amount of each element by adding coefficients to the different compounds.
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Agata [3.3K]

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Explanation:

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3 years ago
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the energy possessed by a body by its value of its position relative to others, stresses within itself, electric charge, and other factors.

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