Which formula represents an organic compound?
2 answers:
<u>Answer:</u> The correct answer is Option 2.
<u>Explanation:</u>
Organic compounds are defined as those compounds in which a covalent bond is present between hydrogen and carbon atom. They are basically known as hydrocarbons. If any atom other than hydrogen and carbon is present, it is not considered as an organic compound.
From the given options:
<u>Option 1:</u>
A, calcium atom is present, so it is not considered as an organic compound.
<u>Option 2:</u>
As., only carbon and hydrogen atom is only present, so it is considered as an organic compound.
<u>Option 3:</u>
As, oxygen atom is present, so it is not considered as an organic compound.
<u>Option 4:</u>
As, phosphorous and oxygen atoms are present, so it is not considered as an organic compound.
From the above information, the correct answer is Option 2.
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<u>Answer:</u> The value of work for the system is -935.23 J
<u>Explanation:</u>
To calculate the number of moles, we use the equation:
Given mass of sodium azide = 16.5 g
Molar mass of sodium azide = 65 g/mol
Putting values in above equation, we get:
The given chemical equation follows:
By Stoichiometry of the reaction:
2 moles of sodium azide produces 3 moles of nitrogen gas
So, 0.254 moles of sodium azide will produce = of nitrogen gas
To calculate volume of the gas given, we use the equation given by ideal gas, which follows:
where,
P = pressure of the gas = 1.00 atm
V = Volume of the gas = ?
T = Temperature of the gas =
R = Gas constant =
n = number of moles of nitrogen gas = 0.381 moles
Putting values in above equation, we get:
To calculate the work done for expansion, we use the equation:
We are given:
P = pressure of the system = (Conversion factor: 1 atm = 101325 Pa)
= change in volume =
(Conversion factor:
)
Putting values in above equation, we get:
Hence, the value of work for the system is -935.23 J