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DaniilM [7]
3 years ago
5

The comet cools down and begins to glow brightly as a result of this decreased temperature.

Chemistry
1 answer:
Alexus [3.1K]3 years ago
4 0
True, in space the tail of a comet will be cold since it a. doesnt have a hot core and b. are typically not found near the sun
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Read the scientific question below.
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Which process was responsible for producing gases in the early atmosphere?
andre [41]

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How many moles of chlorine are in 100g of chlorine
cricket20 [7]
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5 0
3 years ago
If a 2.50 liter container is filled with Ne gas at a pressure of 650 mm Hg and at 25°C, what mass of Ne is in the container?
seraphim [82]

Answer:

1.76 g is the mass of Ne is in the container.

Explanation:

We use the equation given by ideal gas which follows:

PV=nRT

where,

P = pressure of the gas = 650 mm Hg

V = Volume of the gas = 2.50 L

T = Temperature of the gas = 25^oC=[25+273]K=298K

R = Gas constant = 62.3637\text{ L.mmHg }mol^{-1}K^{-1}

n = number of moles of Ne gas = ?

Putting values in above equation, we get:

650mmHg\times 2.50L=n\times 62.3637\text{ L.mmHg }mol^{-1}K^{-1}\times 298K\\\\n=\frac{650\times 2.50}{62.3637\times 298}=0.0874mol

Also, molar mass of Ne = 20.1797 g/mol

So, Mass = Moles\times Molar\ mass = 0.0874\times 20.1797 g = 1.76\ g

<u>1.76 g is the mass of Ne is in the container.</u>

7 0
3 years ago
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