Rutherford quiz! (1 short question)

Consider these changes.

Ede4ka [16]

Answer:

(a) The system does work on the surroundings.

(b) The surroundings do work on the system.

(c) The system does work on the surroundings.

(d) No work is done.

Explanation:

The work (W) done in a chemical reaction can be calculated using the following expression:

W = -R.T.Δn(g)

where,

R is the ideal gas constant

T is the absolute temperature

Δn(g) is the difference between the gaseous moles of products and the gaseous moles of reactants

R and T are always positive.

If Δn(g) > 0, W < 0, which means that the system does work on the surroundings.

If Δn(g) < 0, W > 0, which means that the surroundings do work on the system.

If Δn(g) = 0, W = 0, which means that no work is done.

Δn(g) = 1 - 0 = 1. W < 0. The system does work on the surroundings.

Δn(g) = 2 - 3 = -1. W > 0. The surroundings do work on the system.

Δn(g) = 5 - 0 = 5. W < 0. The system does work on the surroundings.

Δn(g) = 2 - 2 = 0. W = 0. No work is done.

3 0

3 years ago

STATE TRUE OR FALSE

AfilCa [17]

<h2>Answer:</h2><h2>T.rue </h2><h2>False .</h2><h2>T.rue </h2><h2>F.alse </h2><h2>F.alse </h2><h2 />

6 0

3 years ago

Overfishing causes the yellow perch population in this food

Angelina_Jolie [31]

Answer:

shrimp

Explanation:

3 0

3 years ago

Based on the octet rule, nitrogen most likely forms a __ion.

Greeley [361]

Answer:

b) N3-

Explanation:

The octet rule stipulates that a chemical specie is stable if it has eight electrons in its outermost shell.

Nitrogen belongs to group 15. This means that it has five electrons in its outermost shell. The formation N3- means that it accepted three electrons.

This brings the total number of outermost electrons to eight in accordance with the octet rule.

4 0

3 years ago

A student needed to dissolve a substance that she knew was soluble in water. according to the chart, which other solvent would m

Dmitry [639]

The chart is attached below and the options are as follow,

A Benzene

B Methanol

C Hexane

D Octane

Answer:
Option-B (Methanol) is the correct answer.

Explanation:
As we know that the substance given to student is soluble in water. Therefore, those substances which are soluble in water are polar in nature because water is polar in nature and Like Dissolves Like.
Hence, in chart it can easily be seen that Methanol is also polar in nature due to presence of -O-H (polar) bond. So, the substance will dissolve in it.

8 0

3 years ago