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Hatshy [7]
3 years ago
15

Difference between empircal formula and molecular formula​

Chemistry
1 answer:
Nadya [2.5K]3 years ago
7 0

Answer:

The empirical formula of a compound expresses a ratio between the numbers of atoms of different elements present in a molecule of the compound. This ratio is a mole ratio as well as a ratio between numbers of atoms. From the formula it is possible to calculate the percent composition of a compound, while, a chemical (or molecular) formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus and minus signs.

Explanation:

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The equation represents the decomposition of a generic diatomic element in its standard state. 12X2(g)⟶X(g) Assume that the stan
aliina [53]

Answer:

K^{2000K}=0.774\\\\K^{3000K}=12.56

Explanation:

Hello,

In this case, considering the reaction, we can compute the Gibbs free energy of reaction at each temperature, taking into account that the Gibbs free energy for the diatomic element is 0 kJ/mol:

\Delta _rG=\Delta _fG_{X}-\frac{1}{2} \Delta _fG_{X_2}=\Delta _fG_{X}

Thus, at 2000 K:

\Delta _rG=\Delta _fG_{X}^{2000K}=4.25kJ/mol

And at 3000 K:

\Delta _rG=\Delta _fG_{X}^{3000K}=-63.12kJ/mol

Next, since the relationship between the equilibrium constant and the Gibbs free energy of reaction is:

K=exp(-\frac{\Delta _rG}{RT} )

Thus, at each temperature we obtain:

K^{2000K}=exp(-\frac{4250J/mol}{8.314\frac{J}{mol\times K}*2000K} )=0.774\\\\K^{3000K}=exp(-\frac{-63120J/mol}{8.314\frac{J}{mol\times K}*3000K} )=12.56

In such a way, we can also conclude that at 2000 K reaction is unfavorable (K<1) and at 3000 K reaction is favorable (K>1).

Best regards.

4 0
3 years ago
What's the cause of the difference between alcoholic and lactic acid fermentation?
Ne4ueva [31]
During ethyl alcohol fermentation<span>, the pyruvate molecules are broken down into ethyl </span>alcohol<span> molecules and carbon dioxide molecules. During </span>lactic<span> acid</span>fermentation<span>, the pyruvate molecules are broken down into </span>lactic<span> acid molecules only.</span>
7 0
3 years ago
Explain the different results of stress on layers of rock. Include a discussion of whether each result happens slowly or quickly
Alex_Xolod [135]
There are three specific types of stress.
Compression occurs when pressure pushes in on an object from opposite sides this happens slowly.
Tension occurs when pressure pulls on opposite sides of an object, causing it to stretch this happens quickly.
shear occurs when two objects try to slide past each other in opposite directions this happens not to fast but not to slow.
7 0
3 years ago
the barometric pressure in breckenridge colorado is (elevation 9600 frleet) is 580 mmhg. how many atmospheres is there​
solmaris [256]

Answer:

\large \boxed{\text{0.763 atm}}

Explanation:

1 atm = 760 mmHg

\text{Pressure} = \text{580 mmHg} \times \dfrac{\text{1 atm}}{\text{760 mmHg}} = \textbf{0.763 atm}\\\\\text{The atmospheric pressure in Breckenridge is  $\large \boxed{\textbf{0.763 atm}}$}

5 0
3 years ago
How many moles are in 36.0g of H20
Nadusha1986 [10]

Answer:

The answer to your question is 2 moles

Explanation:

Data

mass of H₂O = 36 g

moles of H₂O = ?

Process

1.- Calculate the molar mass of water (H₂O)

H₂O = (1 x 2) + (16 x 1) = 2 + 16 = 18 g

2.- Use proportions and cross multiplication to find the answer.

               18 g of H₂O ---------------- 1 mol

               36 g of H₂O --------------- x

                     x = (36 x 1) / 18

                     x = 36/18

                     x = 2 moles

4 0
4 years ago
Read 2 more answers
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