Asample of a gas is contained in a closed rigid cylinder. according to kinetic molecular theory, what occurs when the gas inside the cylinder is
heated?
(1) the number of gas molecules increases.
(2) the number of collisions between gas molecules per unit time decreases.
(3) the average velocity of the gas molecules increases.
(4) the volume of the gas decreases.

Pauling and lewis questioned the extreme definitions of bonds. they wondered if bonds might be described somewhere in between the two extremes (covalent and ionic). on the basis of experimental data,pauling confirmed that bonds could be ionic, covalent, and for those, in between, exhibit a degree of ionic character. he theorized that the major factor was how strongly the atoms in the bond attracted the electrons. pauling called this factor - the tendency of an atom to attract electrons in a bond.

Which statement describes evidence of a chemical reaction? a) ice melting eliminate b) water boiling c) lighting a match d) grape juice freezing

What is the volume of the fluid in the graduated cylinder with accuracy and measured to the correct degree of precision? 41.2 ml 42.0 ml 41.23 ml 41.89 ml