All categories

3 years ago

Describe the solid state according to the kinetic molecular theory

1 answer:

3 0

<span> the kinetic molecular theory states that all matter is made up tiny constantly moving particles. in a gas they are spread out very far from each other, a liquid is closer together and a solid is packed tightly. when these materials are heated the particles begin to move faster making more friction which causes changes in state, such is call the heat if fusion and vaporization. </span>

You might be interested in

Science.... <br> homework!

Leokris [45]

The answer to this question is 2 and 3

5 0

4 years ago

Predict which of the following changes will cause the volume of the balloon to increase or decrease assuming that the temperatur

IrinaVladis [17]

Answer:

1. a

2. a

3. b

4. c

Explanation:

The STP is the Standard conditions of Temperature and Pressure, in these conditions, T = 0°C and P = 1 atm. By the ideal gas law,

PV = nRT

Where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature.

We can observe that pressure and volume are indirect proportional, so when one increase, the other decrease. so:

1. The pressure decreases from 1.15 atm to STP, 1 atm, thus the volume increases.

2. The pressure decreases from STP, 1 atm, to 0.5 atm, thus the volume increases.

3. The pressure increases from STP, 1 atm, to 1.25 atm, thus the volume decreases.

4. The pressure remains constant at 1 atm, thus the volume is unchanged.

7 0

3 years ago

Hurry up as fast as possible Ill mark you brainlist

Vika [28.1K]

It took 380,000 years for electrons to be trapped in orbits around nuclei, forming the first atoms.

These were mainly helium and hydrogen, which are still by far the most abundant elements in the universe. Present observations suggest that the first stars formed from clouds of gas around 150–200 million years after the Big Bang. Heavier atoms such as carbon, oxygen and iron, have since been continuously produced in the hearts of stars and catapulted throughout the universe in spectacular stellar explosions called supernovae.

6 0

3 years ago

PLEASE HELP!!

kondaur [170]

Number of moles of HCl = $\frac{mass (g)}{molar mass}$
= $\frac{27.8 g}{36.45}$ = 0.763 mole
From balanced equation:
4 moles of HCl give 2 moles Cl2
0.763 mole HCl give ?? mole Cl2
by cross multiplication :
= 0.38 mole Cl2
mass of Cl2 = moles x molar mass = 0.38 x 70.9 = 27 g

3 0

4 years ago

Read 2 more answers

Which of the following best describes the material that makes us the mantle?

IgorLugansk [536]

Answer:

A- a rigid solid

Explanation:

The Earths mantle is mainly made up of rock and rocks are rigid and are solid.

8 0

3 years ago