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2 years ago

Determining the molecular formula of a hydrocarbon with a relative molecular mass of 54

Chemistry

1 answer:

frez [133]2 years ago

8 0

Answer:

C₄H₆

Explanation:

A hydrocarbon is a molecule that only contains atoms of Carbon and Hydrogen. As you remember, the molar mass of Carbon is 12g/mol and the molar mass of Hydrogen is 1g/mol.

To solve this question we can find the amount of Carbons necessary that doesn't exceed the 54g/mol. That is:

54g/mol / 12g/mol = 4.5

As the molecular formula must be given in whole numbers, the amount of Carbons is 4. This 4 carbons have a mass of:

12g/mol*4 = 48g/mol

And the hydrogens necessaries to suply the molecular mass are:

54 - 48 = 6 hydrogens

That means molecular formula is:

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Vsevolod [243]

Answer:

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Explanation:

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3 years ago

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Answers:

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Explanation:
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3 years ago

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Given that Kp [NOTE: Kp!!!!] = 1.39 at 400 ºC for the reaction, P4(g) <=> 2 P2(g), which answer best describes the reactio

Igoryamba

Answer:

The reaction will proceed to the left to attain equilibrium.

Explanation:

The question is missing but I guess it must be about <em>how the reaction will proceed to attain equilibrium.</em>

First, we have to calculate the partial pressures using the ideal gas equation.

$pP_{4}=\frac{2.50mol\times (0.08206atm.L/mol.K)\times 673K}{25.0L} =5.52atm$

$pP_{2}=\frac{1.50mol\times (0.08206atm.L/mol.K)\times 673K}{25.0L}=3.31atm$

Now, we have to calculate the reaction quotient (Qp).

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3 years ago

What is the Kp of this reaction at 700oC if the Kc is 0.40?

dem82 [27]

I am pretty sure its D

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3 years ago

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Calculate the partial pressure of phosgene that is in equilibrium with a mixture of 0. 025 atm of carbon monoxide and 0. 003 5 a

saw5 [17]

According to the reaction equation:
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when:
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3 years ago

Determining the molecular formula of a hydrocarbon with a relative molecular mass of 54​

Determining the molecular formula of a hydrocarbon with a relative molecular mass of 54