Disorder in the universe increases because A. spontaneous changes produce more order in a system.
B. work produces disorder in a system.
C. work produces waste heat, which leaves a system.
D. all of the above

Answers

Answer 1

Answer: The correct answer would be the letter C.
A is obviously not right since it says "more order". B is incorrect because work is obligatory to make an order. If A and B are wrong, then D must be wrong. You're left with C, which is the only true statement here.

Explanation:In thermodynamics, a parameter representing the state of disorder of a system at the atomic, ionic, or molecular level; the larger the disorder the upper the entropy. A live of disorder within the universe or of the inconvenience of the energy during a system to try to work.

Answer 2

Answer: The correct answer would be letter C. A is obviously not right, since it says "more order". B is incorrect because work is obligatory to make order. If A and B are wrong, then D must be wrong. You're left with C, which is the only true statement here.

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Which temperature change would cause the volume of a sample of an ideal gas to double when the pressure of the sample remains the same?

Answers

Following the ideal gas law PV = nRT, and changing it in terms of temperature, we get T = PV/nR. When volume of a sample of an ideal gas to double when the pressure of the sample remains the same, the temperature doubles because temperature is directly proportional with pressure and volume.

What are the efficient things needed for a village

Answers

Answer:

Those aspects which are something a village needs are specified beneath.

Explanation:

Things being equally necessary to make living simpler and therefore more enjoyable. The government has promised to continue providing basic facilities to either an unpopulated location, including such roads, drinkable water, as well as electric power.
Therefore, throughout the village, certain things accessible with maximum variety and quality that have become the basic requirements for this human existence.

Which aqueous solution has the lowest boiling point? A.0.20 m (NH4)2S
B. 0.20 m FeI3
C. 0.20 m K2SO4
D. 0.20 m C2H5OH

Answers

Answer:- D. 0.20 m $C_2H_5OH$

Explanations:- When a on volatile solute is added to a solvent then the boiling point of the solution increases(elevated) and we call it elevation in boiling point.

Elevation in boiling point is directly proportional to the molality of the solution and the Van't Hoff factor "i" which is the number of ions we get on dissociation.

The equation is written as:

$\Delta T_b=imk_b$

where $k_b$ is the boiling point elevation constant.

We have all the aqueous solutions, so the boiling point elevation constant value will remain same for all of them. The molality for all the solutions is also same. So, elevation in boiling point will depend only on the value of Van't Hoff factor.

Lower is the value of "i", lower will be the boiling point and vice versa.

The question asks, which aqueous solution has the lowest boiling point. So, we nede to choose the one with the lowest value of "i".

$(NH_4)_2S(aq)\rightarrow 2NH_4^+(aq)+S^2^-(aq)$

i = 3

$FeCl_3(aq)\rightarrow Fe^3^+(aq)+3I^-(aq)$

i = 4

$K_2SO_4(aq)\rightarrow 2K^+(aq)+SO_4^2^-(aq)$

i = 3

$C_2H_5OH$ is a covalent molecule and so it does not dissociate to give the ions and hence the value of "i" for this is 1.

Comparing the "i" values for all the solutions, the least value is for ethyl alcohol means the boiling point of 0.20 m ethyl alcohol solution will be lowest.

So, the correct answer is D. 0.20 m $C_2H_5OH$ .

A characteristic of ionic solids is that they

Answers

A characteristic of ionic solids is that they consist of oppositely charged ions, which means protons and electrons.

Which region of the visible light spectrum bends the most when passed through a diffraction grating?Red
Yellow
Green
Blue

Answers

Answer:

Red

Explanation:

Red is diffracted the most due to its long wavelength. Compared to violet which is the shortest and is diffracted the least.

What do the 14th Amendment and the Civil Rights Act of 1866 have in common?A. They were ways Congress sought to guarantee blacks the full rights of citizenship.B. They were efforts by Congress to solve economic problems in the South.
C. They were attempts by President Abraham Lincoln to end regional and racial divisions.
D. They were laws President Andrew Johnson supported to punish south slave owners.