Question

1 according to kinetic - molecular theory, collisions between gas particles in a sample of an ideal gas 1 increase the energy content of the gas sample 2 produce strong attractive forces between the gas particles 3 result in a net loss of energy by the gas sample 4 transfer energy between the gas particles 11 according to the kinetic - molecular theory, which statement describes an ideal gas? 1 the gas particles are diatomic. 2 energy is created when the gas particles collide. 3 there are no attractive forces between the gas particles. 4 the distance between the gas particles is small compared to their size. 12 according to the kinetic - molecular theory, which statement describes the particles of an ideal gas? 1 the gas particles are arranged in a regular pattern. 2 the force of attraction between the gas particles is strong. 3 the gas particles are hard spheres in continuous circular motion. 4 the collisions of the gas particles may result in the transfer of energy. 13 which statement describes the particles of an ideal gas based on the kinetic - molecular theory? 1 the motion of the gas particles is orderly and circular. 2 the gas particles have no attractive forces between them. 3 the gas particles are larger than the distances separating them. 4 as the gas particles collide, the total energy of the system decreases. 14 which statement describes the particles of an ideal gas according to the kinetic - molecular theory? 1 the gas particles are arranged in a regular geometric pattern. 2 the gas particles are in random, constant, straight - line motion. 3 the gas particles are separated by very small distances relative to their sizes. 4 the gas particles are strongly attracted to each other. 15 figure 1 base your answer to this question on the information below. a method used by ancient egyptians to obtain copper metal from copper (i) sulfide ore was heating the ore in the presence of air. later, copper was mixed with tin to produce a useful alloy called bronze. refer to figure 1 and answer the following question: which expression can be used to calculate the density of a 129.5 - gram sample of bronze that has a volume of 14.8 cubic centimeters? 1 129.5g/14.8 cm³ 2 14.8/129.5 g/cm³ 3 7.5g/14.8 cm³ 4 129.5/14.8 g/cm³

Explanation:

Step1: Recall kinetic - molecular theory of ideal gases

According to the kinetic - molecular theory of ideal gases, gas particles are in constant, random, straight - line motion, there are no attractive or repulsive forces between them, and collisions are elastic (total energy is conserved). Also, the density formula is $
ho=\frac{m}{V}$, where $
ho$ is density, $m$ is mass and $V$ is volume.

Step2: Analyze questions about ideal gas particles

For questions about ideal gas particles:

• Ideal gas particles have no attractive forces between them. Their motion is random, not orderly or circular. Collisions are elastic, so total energy is conserved. They are not arranged in a regular pattern and the distance between them is large compared to their size.
• For the density calculation question, given mass $m = 129.5$ g and volume $V=14.8$ $cm^{3}$, using the density formula $

ho=\frac{m}{V}$, the density is $\frac{129.5}{14.8}$ g/$cm^{3}$.

Answer:

1. 4
2. 3
3. 2
4. 2
5. 4