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SVETLANKA909090 [29]
3 years ago
9

What is “ location of the merkels cells “

Chemistry
1 answer:
frez [133]3 years ago
3 0
If you could explain what “merkels” are, the question would be more clear.
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The amount of attraction between two masses depends on:
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3 years ago
For the decomposition of calcium carbonate, consider the following thermodynamic data (Due to variations in thermodynamic values
sweet [91]

Answer: 1.109\times 10^3 with four significant digits.

Explanation:

Given,

\Delta H = 178.5 KJ/mole = 178500 J/mole    (1kJ=1000J)

\Delta S = 161.0 J/mole.K

According to Gibbs–Helmholtz equation:

\Delta G=\Delta H-T\Delta S

\Delta G = Gibbs free energy  

\Delta H = enthalpy change  

\Delta S = entropy change  

T = temperature in Kelvin

\Delta G= +ve, reaction is non spontaneous

\Delta G= -ve, reaction is spontaneous

\Delta G= 0, reaction is in equilibrium

As per question the reaction is spontaneous that means the value of  \Delta G is negative or we can say that the value is less than zero.

Thus

T\Delta S>\Delta H

T\times 161J/Kmol> 178500J/mol

T>1109K

Significant figures are the figures in a number which express the value -the magnitude of a quantity to a specific degree of accuracy is known as significant digits.

Thus the temperature is 1.109\times 10^3 in kelvins above which this reaction is spontaneous.

6 0
3 years ago
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