Avogadro’s law and charles’s law describe a proportionality of the volume of a gas when the pressure is constant. which describes the proportionality that allows these laws to be combined when describing a gas?
a. volume is directly proportional to temperature (avogadro’s law) and to moles (charles’s law).
b. volume is inversely proportional to temperature (avogadro’s law) and to moles (charles’s law).
c. volume is directly proportional to moles (avogadro’s law) and to temperature (charles’s law).
d. volume is inversely proportional to moles (avogadro’s law) and to temperature (charles’s law).

In a laboratory experiment, a fermenting aqueous solution of glucose and yeast produces carbon dioxide gas and ethanol. the solution was heated by burning natural gas in a bunsen burner to distill the ethanol that formed in the flask. during the distillation, the ethanol evaporated and then condensed in the receiving flask. the flame of the burner was kept too close to the bottom of the flask and some of the glucose decomposed into a black carbon deposit on the inside of the flask. during this experiment the following changes occurred. which of these changes involved a physical change and not a chemical change? check all that apply. 1-condensation of ethanol 2-evaporation of ethanol 3- formation of carbon dioxide gas from glucose burning of natural gas 4-formation of ethanol from glucose by yeast 5-formation of a carbon deposit inside the flask

Particles vibrate in a rigid structure and do not move relative to their neighbors.

When hydrochloric acid reacts with potassium hydroxide solution, the following reaction occurs. hcl (aq) + koh (aq) h2o (l) + kcl (aq) the reaction gives off heat energy, so it is an reaction.