A gas cylinder contains exactly 15 moles of
oxygen gas (O2). How many molecules of oxygen
are in the cylinder?
0 4.01 x 1022 molecules
0 6.02 x 1023 molecules
9.03 x 1024 molecules
2.89 x 1026 molecules

Bohr's model could only explain the spectra of which type of atoms? single atoms with one electron single atoms with more than one electron bonded atoms with one electron bonded atoms with more than one electron

What are the spectator ions in 2h+ + so42- + ca2+ + 2r → caso4 + 2h+ + 21?

What is the equilibrium constant of aa+bb=cc+dd