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3 years ago

Which of the following statements is always TRUE for the freezing of water?

Chemistry

1 answer:

Rom4ik [11]3 years ago

3 0

ΔG > 0 is always true for the freezing of water.

Explanation:

The freezing of water is only spontaneous when the temperature is fairly small. Over 273 K, the higher value of TΔS causes the sign of ΔG to be positive, and there is no freezing point.
The entropy decreases as water freezes. This does not infringe the Thermodynamics second law. The second law doesn't suggest entropy will never diminish anywhere.
Entropy will decline elsewhere, provided it increases by at least as much elsewhere.

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PLEASE HELP!!!!!!!!! 20 points! Which would be best categorized as heat transfer by convection? Usuing a heat blanket to get war

Ghella [55]

I'd say the correct answer is: Noodles rising and falling apart in boiling water.

3 0

3 years ago

Read 2 more answers

Which elements have the quantum numbers (4,3,-2,+1/2) and (5,2,-1,-1/2)

nikklg [1K]

The elements are samarium (Sm) and silver (Ag).

Quantum numbers (4,3,-2,+½)

n = 4: Principal quantum number = 4.

l = 3: Element has 4f electrons

It is conventional to list quantum numbers in decreasing order.

Hund’s rule states that all the orbitals must be half-filled with electrons having the same spin before any can receive a second electron.

We get the following table:

Element n l mₗ mₛ

La 4 3 3 +½

Ce 4 3 2 +½

Pr 4 3 1 +½

Nd 4 3 0 +½

Pm 4 3 -1 +½

Sm 4 3 -2 +½

The element is samarium, Sm.

Quantum numbers (5,2,-1,-½)

n = 5: Principal quantum number = 5.

l = 2: Element has 5d electrons

We get the following table:

Element n l mₗ mₛ

Y 5 2 2 +½

Zr 5 2 1 +½

Nb 5 2 0 +½

Mo 5 2 -1 +½

Tc 5 2 -2 +½

Ru 5 2 2 -½

Rh 5 2 1 -½

Pd 5 2 0 -½

Ag 5 2 -1 -½

The element is silver, Ag.

Note: These assignments assume that there are no exceptions in the Periodic Table.

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3 years ago

What advice did Planck ignore when he was a student,and how did it impact future discoveries

yan [13]

Answer:

A PROFESSOR WARNED HIM NOT TO GO INTO PHYSICS. Not long after the 16-year-old Planck got to the University of Munich in 1874, physics professor Philipp von Jolly tried to dissuade the young student from going into theoretical physics. Jolly argued that other scientists had basically figured out all there was to know.

Explanation:

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3 years ago

How many moles of ions are produced by the dissociation of 1 mol of al2(co3)3?

zloy xaker [14]

Aluminium Carbonate on Dissociation produces Aluminium Ions and carbonate Ions as follow,

Al₂(CO₃)₃ → 2 Al⁺³ + 3 CO₃⁻²

Result:
On dissociation Al₂(CO₃)₃ produces FIVE Ions in total. The Ions produced and there number are as follow;

Al⁺² = 2

CO₃⁻² = 3

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3 years ago

Which represents the greatest time frame in which a short-term environmental change can occur? A)in days. B)in minutes. C)over h

dangina [55]

Answer:

Over hundreds of years

Explanation:

Just did the test and got it right

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3 years ago