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babymother [125]
3 years ago
5

The maximum efficiency possible in an energy conversion process that is not limited by the second law of thermodynamics

Chemistry
1 answer:
Anna [14]3 years ago
5 0

Answer:

100 %

Explanation:

The maximun efficiency possible (whem not limited by the  second law of thermodynamics) happens when all the energy used is transformed into the type of energy we required with no other transformations.

For example, in an engine we want that all the energy we supply is being converted to work. That's the ideal case, but in reality always some of that energy is lost in the form of heat.

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Sodium carbonate can be made by heating sodium bicarbonate: 2NaHCO3(s) → Na2CO3(s) + CO2(g) + H2O(g) Given that ΔH° = 128.9 kJ/m
Ad libitum [116K]

Answer:

[tex]128^{o}C[/tex]minimum temperature will the reaction become spontaneous.

Explanation:

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

From the given,

\Delta G^{o}=33.1

\Delta H^{o}=128.9kJ/mol

Temperature\,change=25+273=98K

33.1=128.9-298 \Delta S

\Delta S=0.322kJ/mol.K

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

0=128.9-T(0.322)=401K=218^{o}C

Therefore, 128^{o}Cminimum temperature will the reaction become spontaneous.

7 0
3 years ago
I need help on my chemistry quiz
slamgirl [31]

Answer:

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4 0
2 years ago
How many molecules does water have
mart [117]

So, we calculate how many molecules there are in a drop of water, which we determined contains 0.002775 moles: molecules in a drop of water = (6.022 x 1023 molecules/mole) x 0.002275 moles. molecules in a drop of water = 1.67 x 1021 water molecules.

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Which sample of argon contains a total of 3.01 x 10^23 molecules at STP?
soldi70 [24.7K]

Answer:option d

Explanation:

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Calculate the moles of SO2 that contains 3.8 moles of O atoms
natima [27]
SO₂ is made from 1 S atom and 2 O atoms. 
SO₂ → S + 2O

The stoichiometric ratio between SO₂ and O atom is 1 : 2.
Hence,
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                          = 3.8 mol / 2
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Hence, moles of SO₂ is 1.9 when there are 3.8 moles of O atoms.
8 0
3 years ago
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