1. A container holds four times as many moles of CO2 as O2. If the total pressure in the container is 20. atm,

what is the pressure exerted by carbon dioxide?

T

-

atm

Round your answer to the nearest whole number.

Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.

Can someone me with these questions plz.

If i can still dissolve more sugar into the solution at a certain temperature what would i call that solution