1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lina2011 [118]
3 years ago
14

Liquid water is about 800 times denser than dry air under standard conditions. Use kinetic molecular theory to explain this diff

erence in the densities of the two substances.
Chemistry
1 answer:
Savatey [412]3 years ago
4 0

<em>Kinetic molecular Theory points:</em>

1. Gases molecules are always in random motion.

2. Gases molecule collide with each other and with the walls of container.

3.  Gases molecules total volume is negligible as compare to container.

4. There is no attractive forces between the gases particles

5. K.E is directly proportional to absolute temperature.

<em>Why liquid are denser than gases according to K.M.T:</em>

1. As gases are in random motion, so they have weak forces/ no attractive forces (Acc. to KMT) due to this they are apart as compare to liquid which have stronger forces are closer to each other. So volume of gases will be greater. d= m/v

2.  K. E of gases are greater than liquid due to this gases move randomly, apart from each another. Due to this their volume will be greater. d= m/v

3. Gases molecules total volume is negligible as compare to container which show that gases molecules have large spaces between them which causes lower in density.

You might be interested in
3. How much heat is required to raise the temperature of 179g of acetic acid, CH3COOH, from 250C
IgorLugansk [536]

Answer:

Q = 1252.82kJ

Explanation:

Mass = 179g

Initial temperature (T1) = 25°C = (25+273.15)K = 298.15K

Final temperature (T2) = 82.70°C = (82.70 + 273.15)K = 335.85K

Specific heat capacity (c) = 121.3J/g.K

Heat energy (Q) = mc∇T

M = mass of the substance

Q = heat energy

c = specific heat capacity of the substance

∇T = change in temperature of the substance = T2 - T1

Q = mc∇T

Q = 179 × 121.3 × (355.85 - 298.15)

Q = 21712.7 × 57.7

Q = 1,252,822.79

Q = 1252.82kJ

The heat energy required to heat 179g of acetic acid from 25°C to 82.70°C is 1252.82kJ

3 0
3 years ago
How do i solve the following question (please show work):
Naily [24]
Eqn for finding average atomic mass is as following:
Average atomic mass=∑(relative isotopic mass × percentage abundance)

For qn:
Average atomic mass of oxygen= ∑(99.762×16) + (0.038000×17) + (0.20000×18)
=1600.438
4 0
3 years ago
A potted plant is placed under a grow lamp, which provides 4,200 J of energy to the plant and the soil over the course of an hou
Allushta [10]

Answer:

Temperature increase = ΔT = 2.08 °C

Explanation:

Given data:

Energy absorbed by plant = 4200 J

Specific heat capacity of soil = 0.84 J/g°C

Mass of soil = 2400 g

How much temperature increase = ?

Solution:

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

by putting values,

4200 J = 2400 g ×0.84 J/g°C × ΔT

4200 J = 2016 J/°C  × ΔT

ΔT = 4200 J  / 2016 J/°C

ΔT = 2.08 °C

6 0
3 years ago
He developed the beginnings of the modern<br> atomic theory in the 1800s.
lana66690 [7]

Answer:

John Dalton

Explanation:

-

Hope that helps

3 0
3 years ago
Germanium, Astatine, Tellurium, and Arsenic are all _____. metalloids non-metals metals noble gases
zmey [24]

Answer:-

Metalloids

Explanation: -

Metalloids are elements with properties that are somewhat in between those that of metals and non metals. They have generally 4 or 5 electrons in their valence shell for up to the 4th period to be called a metalloid. From the fifth period 6 valence electrons can make an element metalloid.

From the sixth even 7 valence electrons can make an element metalloid

The electronic configuration of Germanium is

2,8,18, 4

So it is a metalloid.

The electronic configuration of tellurium,

2,8,18, 18, 6

So it is a metalloid.

The electronic configuration of Arsenic

2,8,18, 5

So it is a metalloid.

The electronic configuration of astatine

2,8,18, 32, 18, 7

So it is a metalloid.

4 0
3 years ago
Other questions:
  • Which statement is a valid conclusion about the activation energy of the reverse reaction if the forward reaction is exothermic?
    7·1 answer
  • What happens to water during evaporation?
    15·2 answers
  • A scientific model must make a testable prediction. a scientific model must make a testable prediction.
    12·1 answer
  • HELP ASAPP PLZZZ I WILL GIVE YOU 50 POINTS
    7·2 answers
  • Which of the following is NOT a property of a base?
    14·1 answer
  • Some scientists believe that comets originate from the...​
    9·1 answer
  • A gas is contained in a 5.0–liter container at a pressure of 100 kPa. What size container would be required to contain the gas a
    12·1 answer
  • How many moles of hydrogen gas(H2) are needed to react with 15 moles of chlorine gas
    7·1 answer
  • Determine the mass in grams of 3.75 x 10^21 atoms of zinc. (the mass of one mole of zinc is 65.39 g)
    7·1 answer
  • Breathe in air container more ____ than breathed out air
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!