Agas occupies 1.00 l at standard temperature. what is the volume at 333.0°c?

If the enthalpy value for a reaction is negative, what does that indicate about the reaction?

How can a scientist assess whether a pure niobium (nb) sample is responsible for contaminating the lab with radioactivity? test the niobium sample to see whether it now contains other elements. test the niobium sample for the presence of niobium oxide compounds. heat the niobium, and see if the level of radioactivity in the lab increases. place the niobium under pressure, and see if the level of radioactivity in the lab increases.

Most substances become less dense as the temperature increases. which substance is an exception to this rule? ice at 0°c steel at 40°c oxygen at 20°c aluminum at 20°c