CHEMISTRY MIDDLE SCHOOL

A scientist takes a small, partially inflated balloonout of liquid nitrogen (at a very low temperature).
As the balloon rests on the table, it begins to grow
in size. Which statement(s) best explains why the
balloon grows?

The air from the outside comes inside the
balloon. More air means more volume.
The air warms and increases particle
movement. Increased particle movement
leads to increased volume.
side
o
Increased temperature means increased
volume as long as the container is flexible.

Answers

Answer 1
Answer:

Answer: option 2 and 3

Explanation:

I just did it
Answer 2
Answer:

Answer:

The last two

Explanation:

edge2021

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A 50°C solution has a pH of 3.30. At this temperature, Kw = 5.48 x 10 9. What is the pOH of the solution?

Answers

Answer:

9.93

Explanation:

Your value for Kw is incorrect. The correct value is 5.48 × 10^-14.

  pH + pOH = pKw

3.30 + pOH = -log(5.84 × 10^-14) = 13.23

          pOH = 13.23 - 3.30 = 9.93

The pOH of the solution is 9.93.

The pOH of the solution is 10 .

Given that, the pH of the solution is 3.30, we also know that;

pH = - log[H^+]

Hence;

[H^+] = Antilog (-3.3)

[H^+] = 5.0 × 10^-4 M

But;

Kw = [H^+] [OH^-]

[OH^-] = Kw/[H^+]

The accurate value of Kw is 5.48 × 10^-14 not  5.48 x 10 9

[OH^-] = 5.48 x 10^-14/ 5.0 × 10^-4

[OH^-] = 1.1 x 10^-10 M

pOH = - log[1.1 x 10^-10 M]

pOH = 10

Learn more: brainly.com/question/1079292

Abrasion and carrying load containing sediment and deposition are examples of? land erosion
load effect
water erosion
none of the above

Answers

C : water erosion is the correct answer. I know this because water from the sea, pool, lake, et cetera could erode the ground surrounding the water because the pressure of the water and the water seeping into tiny cracks, and even holes in the ground cause sediment to mix with the water causing abrasion and erosion. Hoped I helped!

Answer:

the correct answer is water erosion (c.)

Why do elements in a group on the periodic table have similar chemical properties? A.
same number of outermost electrons

B.
same number of protons

C.
similar atomic masses

D.
similar atomic numbers

Answers

do elements in a group on the periodic table have similar chemical properties because their atoms have the same number of electrons 

A. same number of outermost electrons

What happens as a result of an increase in the intensity of a sound wave?

Answers

The result is the sound will be louder. This is due to the high amount of energy in the sounds.

Why is gas able to flow

Answers

It has enough energy to move around. Also because its particles float around and aren't packed tightly together. Its particles move freely.

Can aromatic compounds belong to other classes of compounds

Answers

Answer:

Yes

Explanation:

First of all, aromatic compounds are part of a group of compounds known as hydrocarbons. Hydrocarbons are compounds containing only gmhydrogen and carbon. Some aromatic compounds contain more than one benzene ring. These belong to another subgroup known as poly nuclear aromatic hydrocarbons.
Yes , it is possible for aromatic compounds to belong to other classes of compounds.
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