Hot air is a lot less dense for a few reasons. Hot air essentially means the particles have more kinetic energy, and move around a lot more. Cold air is dense because the particles move a lot less, have less energy, and are closer together.

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3 years ago

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Number the elements sodium, magnesium, and potassium in the predicted order of ionic radius from the largest (1) to the smallest

Aleksandr-060686 [28]

Potassium ,sodium, and magnesium

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Write the dissociation equation for NH4OH.

iVinArrow [24]

Explanation:

NH4OH(aq) ---> NH4+(aq) + OH-(aq)

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3 years ago

What mass of NH3 (g) is produced when 2 x 10^23 molecules of N2 reacts

Ronch [10]

Answer:

m=8.58

Explanation:

$n = \frac{m}{mr}$

N=n÷la

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3 years ago