An atom has 11 protons, 12 neutrons, and 11 electrons. what is the charge of the atoms nucleus? A) +11
B) -11
C) 0
D) 23

When the speed of the bottle is 2 m/s, the average maximum height of the beanbag is m.

Aroom with dimensions 7.00m×8.00m×2.50m is to be filled with pure oxygen at 22.0∘c and 1.00 atm. the molar mass of oxygen is 32.0 g/mol. how many moles noxygen of oxygen are required to fill the room? what is the mass moxygen of this oxygen?

Which sample at stp has the same number of atoms as 18 liters of ne at stp