How many valence electrons do ions end up with after gaining or losing electrons?

8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.

Which scientists contributed to the determination of how cfcs in clouds in the upper atmosphere could destroy ozone molecules

Which statement characterizes synthetic polymers? a. they come from animals and plants. b. they are found in nature. c. they are made in a lab. d. they are components of starch.