Answer:
The critical temperature of a substance is the temperature at and above which vapour of the substance cannot be liquefied, no matter how much pressure is applied.
Option C: elements produce spectra with only few distinct lines.
The spectra are not continuos and are different for every element. This permits to identify elements.
C. 1.0 M Al2O3 would be the best answer
Answer:
Use the formula PV=nRT to get the temperature
