Which weighs more, a ton of bricks or a ton of feathers? Which has more pieces in it?
Explain How you know.

Aballoon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon?

Calculate the number of moles of ethane in 100 grams

Astudent conducts an experiment to determine how the amount of water given to a plant affects its growth. what is the independent variable for this experiment?