Which of the following statements is true? a) particles of different masses have the same average speed at a given temperature. b) the larger a molecule, the faster it will effuse. c) at very high pressures, a gas will occupy a larger volume than predicted by the ideal gas law. d) for a given gas, the lower the temperature, the faster it will effuse. e) none of the above statements are true

None of the above statements is True

Explanation:

According to Graham's law, the effusion rate and the square root of the molecular mass of a gas are inversely proportional. Therefore, heavy gas particles diffuse slower compared to light particles which effuse at a faster rate.Particles of different masses have varying average speeds at a given temperature. Large molecules effuse at a slower rate compared to smaller molecules.The diffusion rate of a gas increases with an increase in temperature because higher temperature increases the kinetic energy of particles of the gas making them move faster.

Answer : option c) heat is released during the process.explanation :

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.

The activity series is shown in the attached picture. if the element is below the other, then you can displace the other. following the activity series as a guide, the reactions are as follows: nickel and aluminum chloride3 ni + 2 alcl₃  → 3 nicl₂ + 2 albarium and copper bromideba + cubr  →  no reaction because cu is less oxidizable than bapotassium nitrate and aluminum3 kno₃ + al  → al(no₃)₃ + 3 ksodium phosphate and zincnaso₄ + zn  → znso₄ + na