Question

12 verdadero o falso 1 punto erlenmeyer flasks are not accurate measuring devices and should not be used to measure volume. true false 13 elección múltiple 1 punto the average kinetic energy of the particles in a gas is directly proportional to the gas pressure measured in atmospheres. the momentum of the particles in kg*m/s the temperature measured in kelvin. the volume measured in milliliters. 14 coincidencia 1 punto match the following properties to the correct phase(s) of matter. particles are arranged in an organized way variable volume particles slide past one another

Explanation:

1. Question 12: Erlenmeyer flasks have a wide - mouth and irregular shape, making them less accurate for volume measurement compared to graduated cylinders or pipettes. They are mainly used for mixing and heating reactions.
2. Question 13: According to the kinetic - molecular theory of gases, the average kinetic energy of gas particles is given by $\overline{KE}=\frac{3}{2}kT$, where $k$ is the Boltzmann constant and $T$ is the temperature in Kelvin. So, it is directly proportional to the temperature in Kelvin.
3. Question 14:

• Particles are arranged in an organized way in solids. In solids, the particles are in a fixed position and have a regular pattern.
• Variable volume is a characteristic of gases. Gases expand to fill the volume of their container.
• Particles slide past one another in liquids. Liquids have a definite volume but take the shape of the container, and their particles can move relative to each other.

Answer:

1. Question 12: True
2. Question 13: the temperature measured in Kelvin
3. Question 14:

• Particles are arranged in an organized way: Solid
• Variable volume: Gas
• Particles slide past one another: Liquid