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Evgen [1.6K]
3 years ago
13

How does heating or cooling air affect the air’s volume?

Chemistry
1 answer:
Lelu [443]3 years ago
8 0

Answer:

As the air gets warm, molecules start to vibrate and they start to run into each other which makes the space around each of the molecules. Since each molecule takes up more space when it moves, the air gets bigger to let that happen and the air becomes denser or lighter!

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State property of the liquids that caused them to separate into layers
nydimaria [60]

Explanation:

Decantation is a process for the separation of mixtures of immiscible liquids or of a liquid and a solid mixture such as a suspension.

Source: https://en.m.wikipedia.org/wiki/Decantation

6 0
4 years ago
Balance the equation below for the reaction between hydrogen and chlorine, using the smallest whole-number
Elanso [62]
H2(g) + Cl2(g) = 2 HCl(aq) (balanced equation)
1, 1, 2 (coefficients)
3 0
3 years ago
An unknown metal forms a soluble compound, M(NO3)2, which then undergoes electrolysis with an applied current of 2.50 amperes. I
frozen [14]

Answer:

The metal is the cathode

The metal is palladium

At the other cathode, the reaction going on is

M(s) ------> M2^+(aq) + 2e

Chlorine can spontaneously react with Pd converting it to Pd^2+

The molar mass of the metal is 106.4 g of M

Explanation:

Given the formula of the compound, M^2+ ion is involved. The equation of the reaction is;

M^2+(aq) + 2e -------------> M(s)

The number of moles of electrons transferred = 2 moles

1 mole of electron = 96500C

And Q= It

Where I= current

t= time taken in seconds

Now;

x g of the metal (its molar mass) is deposited by 2×96500 C

1.87 g of the metal is deposited by (2.50× 22.6×60) C

x = 1.87 × 2×96500/ 2.50 × 22.6 × 60

x= 360910/3390

x= 106.4 g of M

The metal is the cathode

The metal is palladium

At the other cathode, the reaction going on is

M(s) ------> M2^+(aq) + 2e

Chlorine can spontaneously react with Pd converting it to Pd^2+

7 0
4 years ago
Shale forms from tiny particles of which material?
miskamm [114]

Answer:

a. mica

Explanation:

6 0
3 years ago
Lecture 19 Equilibrium II Worksheet 1)The equilibrium constant, K c , is 9.8 x 10 5 for H 2 (g) + S (s) H 2 S (g). a.Find the re
Strike441 [17]

Answer:

a) Qc = 0.6338

b) Qc < Kc ⇒ the reaction proceeds to the right, towards the products.

Explanation:

  • H2(g) + S(s) ↔ H2S(g)

∴ Kc = 9.8 E5 = [H2S] / [H2]

a) reaction quotient, Q:

∴ Qc = [H2S] / [H2] = (0.483 M)/(0.762 M) = 0.6338

b) the process is not established equilibrium: Qc < Kc

⇒ The reaction evolves to the right, towards the products

6 0
3 years ago
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