The particles of a substance stay close together but slide past one another as they move. When thermal energy is added to the substance, the particles start to move independently of one another. What change in state has occurred?
A. Liquid to gas
B. Liquid to solid
C. Solid to liquid
D. Solid to gas

Correct answer is A

Agas contained within a piston-cylinder assembly undergoes three processes in series: process 12: compression with pv= constant from 1 bar and 1 liter to 4 bar. process 23: constant pressure expansion to 1 liter. process 31: constant volume calculate the pressure and volume at each state, and sketch the processes on a p-vdiagram labeled with pressure and volume values at each numbered stat

The frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.

The weights of bags filled by a machine are normally distributed with a standard deviation of 0.05 kilograms and a mean that can be set by the operator. at what level should the mean weight be set if it required that only 1% of the bags weigh less than 9.5 kilograms? round the answer to 2 decimal places.