What is the mass of each element in a 324.8 sample of co2

During which time interval does the object travel approximately 10 meters

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.

What are the first three quantum numbers for the electrons located in subshell 2s?