A reversible, adiabatic process occurs to raise the pressure of argon (assumed to be an ideal gas with constant specific heats). Initiallly the gas occupies 7.51 L volume at 30C. After compression the system has a volume of 575cm3. What is the final temperature (Celcius)

In which phase(s) do the molecules take the shape of the container?

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

Answer asap : ( a. how does mucus prevent the entry of pathogens? b. describe two ways white blood cells protect us from pathogens.