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fiasKO [112]
2 years ago
11

Hii I need a tutor for chemistry

Chemistry
1 answer:
kap26 [50]2 years ago
3 0

Answer:

I had a tutor for chemistry but I think I don't have the number now.

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Using the thermodynamic information in the ALEKS Data tab, calculate the standard reaction free energy of the following chemical
julia-pushkina [17]

Answer:

43.0 kJ

Explanation:

The free energy (ΔG) measures the total energy that is presented in a thermodynamic system that is available to produce useful work, especially at thermal machines. In a reaction, the value of the variation of it indicates if the process is spontaneous or nonspontaneous because the free energy intends to decrease, so, if ΔG < 0, the reaction is spontaneous.

The standard value is measured at 25°C, 298 K, and the value of free energy varies with the temperature. It can be calculated by the standard-free energy of formation (G°f), and will be:

ΔG = ∑n*G°f products - ∑n*G°f reactants, where n is the coefficient of the substance in the balanced reaction.

By the balanced reaction given:

2NOCl(g) --> 2NO(g) + Cl2(g)

At ALEKS Data tab:

G°f, NOCl(g) = 66.1 kJ/mol

G°f, NO(g) = 87.6 kJ/mol

G°f, Cl2(g) = 0 kJ/mol

ΔG = 2*87.6 - 2*66.1

ΔG = 43.0 kJ

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3 years ago
Consider the five balanced chemical reactions listed below, all using O2 as a reactant. Normally, O2 is an excess reagent for re
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Answer: option E. None because in all the reactions O2 is in excess

Explanation:

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Food is the only limiting factor that keeps populations from growing too large true or false?
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FALSE

There are other limiting factors like lack of space, diseases, and com petition.
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Iron and Oxygen form rust. Compare the mass of iron and oxygen before the reaction with the mass of rust resulting from the reac
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The mass will stay the same because of the conservation of mass
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What are the terms that descripe these values for the element oxygen?
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16 is the mass number. 8 is the atomic number.

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