CHEMISTRY HIGH SCHOOL

Which material is not a form of pyroclastic material?A- volcanic dust
B- volcanic dirt
C- volcanic bombs
D- lapilli

Answers

Answer 1
Answer: I believe it's B. By volcanic dust do you mean ash?

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Which statement describes the particles of an ideal gas based on the kinetic molecular theory?(1) The gas particles are relatively far apart and have negligible volume.
(2) The gas particles are in constant, nonlinear motion.
(3) The gas particles have attractive forces between them.
(4) The gas particles have collisions without transferring energy.

Answers

\boxed{\left( {\text{1}} \right){\text{ The gas particles are relatively far apart and have negligible volume}}} is the correct statement that describes the particles of an ideal gas on the basis of kinetic molecular theory.

Further Explanation:

Kinetic theory of gases

It defines gas to be considered as a large number of particles. These particles move randomly in all directions. It explains the macroscopic properties of gases by considering their molecular composition and motion.

Postulates:

(a) The gas molecules are very small and are located far apart from each other. Most of the volume occupied by the gas is an empty space.

(b). The molecules of the gas are in rapid random motion. These can move in all directions.

(c). The gas molecules undergo collisions with each other and with the walls of the container. The collisions between molecules and container walls are responsible for the pressure of the gas.

(d). There is no loss of kinetic energy when gas molecules collide so their collisions are known as perfectly elastic.

(e). No interaction occurs between different gas particles during collisions.

(1) The gas particles are relatively far apart and have negligible volume.

The size of gas particles is very small and therefore these have negligible volume. Moreover, these molecules are far away from each other.

(2) The gas particles are in constant, nonlinear motion.

The motion of the gas particles occurs randomly in all directions so they can not be in constant, nonlinear motion.

(3) The gas particles have attractive forces between them.

The particles of gas have no interaction with each other. So no attractive forces are present between them.

(4) The gas particles have collisions without transferring energy.

The collisions of gas molecules are considered to be perfectly elastic. So the total energy of the system remains constant. It neither increases nor decreases.

Therefore the correct statement is (1).

Learn more:

  1. Which will have the greatest average speed at 355 K?: brainly.com/question/1852048
  2. Which statement is true for Boyle’s law: brainly.com/question/1158880

Answer details:

Grade: High School

Subject: Chemistry

Chapter: Ideal gas equation

Keywords: kinetic theory of gases, collisions, energy, constant, attractive forces, particles, molecules, volume, random motion, perfectly elastic, negligible.

Answer:

(1) The gas particles are relatively far apart and have negligible volume

Explanation:

The Kinetic Molecular Theory was formulated to explain the behaviour of ideal gases. The main postulates of the theory are:

-The volume occupied by the gases is negligible when compared to the distance between them

- They do not experience any intermolecular forces of attraction or repulsion

-The collision between gas particles is completely elastic

-The gas particles are in constant random motion

Therefore the first statement which suggests that the gas particles are relatively far apart and have negligible volume is in accordance with the theory

Which part of experimental design is most important to a scientist when replicating an experiment? Having exactly the same data as the previous experiment using the same procedure and variables as the previous experiment conducting an experiment similar to the previous experiment using the same laboratory that was used in the previous experiment

Answers

Answer:

The answer to your question is below:

Explanation:

Having exactly the same data as the previous experiment I think that having the same data as the previous experiment is extremely important but not the most important, for me is the second most important.

Using the same procedure and variables as the previous experiment For me, this is the most importan thing when a scientist is designing an experiment, because if he or she follow exactly the same procedure and variables, then the results will be very close.

Conducting an experiment similar to the previous experiment  This characteristic is important but not the most important.

Using the same laboratory that was used in the previous experiment It is not important the laboratory, if the procedure and variables are the same, your experiment must give the same results in whatever laboratory.

Answer:

B) Using the same procedure and variables as the previous experiment

Which of the following is equal to 4 kilograms? A. 4,000 mg
B. 4,000 g
C. 40 g
D. 4,000 cg

Answers

Of course , B. 4,000 g

In which state of matter are the particles close together and highly organized? A. Solid. B. Liquid. C. Gas. D. All of the choices are correct.

Answers

Answer:

A. Solid

Explanation:

that is what creates a solid state. the particles are moving slowly enough (the matter is cold enough) that stable structures between them can be established. so, they get close together and create e.g. grids.

Explain how humans have impacted the biome in which you live which is missouri

Answers

humans have impacted wwell almost everything including the technology well the biome includes them because of there radiation power and the next que is confusing. sorry

calculate the molar mass of a gas if 3.30 grams of the has occupies 660 ml at 735mmHg and 27 degrees C

Answers

The molar mass of the gas that occupies the given volume is 127.4 g/mol.

The given parameters;

  • mass of the gas, m = 3.3 g
  • volume of the gas, V = 660 ml = 0.66l
  • pressure of the gas, P = 735 mmHg
  • temperature of the gas, T = 27 ⁰C = 273 + 27 = 300 K

The number of moles of the gas is calculated form ideal gas law as follows;

PV = nRT

where;

  • n is the number of moles
  • R is the gas constant = 62.36 L.mmHg/mol.K

n = (PV)/(RT) \n\nn = (0.66 * 735)/(62.36 * 300) \n\nn = 0.0259 \ mole

The molar mass of the gas is calculated as follows;

no. \ mole = (reacting \ mass)/(molar \ mass) \n\nmolar \ mass = (reacting \ mass)/(no.\ mole) \n\nmolar \ mass =(3.3)/(0.0259) \n\nmolar \ mass = 127.4 \ g/mol

Thus, the molar mass of the gas that occupies the given volume is 127.4 g/mol.

Learn more here:brainly.com/question/24542515
Use the ideal gas law PV = nRT and manipulate it to solve for n. PV/RT = n.Convert to SI units:660ml -> 0.660 L27 degrees -> 300 KLeave Pressure as isUse 62.36368 for R becuase you are using mmHg for Pressure.Now plug into the equation to get about 0.025928 mols. Divide the 3.30 grams by the mols to get about 127 g/mol.
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