Asealed rigid vessel contains air at stp. it is heated to bring the air to a temperature of 80 °c. part a what will be the ratio of the mean free path of the air molecules at 80 °c to their mean free path at stp?

Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.

How many grams of ammonia would be produced by the decomposition of 16.93 mlof hydrazine? (the density of hydrazine is 1.021g/ml)

How many moles are equal to 2.4×10^23 formula units of sodium chloride