Which law states that the volume of a gas is proportional to the miles of the gas when pressure and temperature are kept constant ?
boyle’s law
dalton’s law
charles law
avogadro’s law

Read the given expression. x = number of protons − number of core electrons which of the following explains the identity of x and its trends across a period? x is the effective nuclear charge, and it remains constant across a period. x is the screening constant, and it remains constant across a period. x is the effective nuclear charge, and it increases across a period. x is the screening constant, and it increases across a period.

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li

8. what happens to matter during a chemical reaction