What are the physical and chemical properties that can change an object's appearance and chemical makeup

The density of an unknown gas at 98°c and 740 mmhg is 2.50 g/l. what is the molar mass of the gas with work showed?

4. absorption has the highest risk of overdose due to increased potency. a. rectal b. oral c. transdermal d. intranasal

Consider this initial-rate data at a certain temperature for the reaction described by