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3 years ago

Calculate the number of moles of a gas if it occupies a volume of 4dm at 10atm and _200°c.

1 answer:

5 0

The number of moles of a gas if it occupy a volume of 4dm at 10 atm and - 200 c is 6.67 moles

calculation
by use of ideal gas equation
that is PV =nRT
where P(pressure) = 10 atm
V( volume) = 4dm^3 = 4L
n(number of moles) =?
R(gas constant) = 0.0821 L.atm/mol.K
T = -200 +273 = 73 K

make n the formula of the subject n = PV/RT

n is therefore = (10 atm x 4l)/(0.0821 L.atm/mol.K x 73 K) = 6.67 moles

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Answer:

6 neutrons

Explanation:

6 neutrons

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3 years ago

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elixir [45]

Answer:

1. 2p sublevels, n = 2, orbital <em>p</em>, l = 1, ml = 0, ±1

2. 5f sublevels n = 5, orbital <em>f</em>, l = 3, ml = 0, ±1, ±2, ±3

Explanation:

The rules for electron quantum numbers are:

1. Shell number, 1 ≤ n

2. Subshell number, 0 ≤ l ≤ n − 1

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4. Spin, either -1/2 or +1/2

So,

1. 2p sublevels,

n = 2, orbital <em>p</em>, so l = 1, ml = 0, ±1

2. 5f sublevels

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3 years ago

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3 years ago