Consider the following equilibrium reaction having gaseous reactants and products, 4HCI + O2 + 2H2O + Cl2
Which of the following would result from increasing only the concentration of oxygen?
O The concentration of hydrochloric acid increases,
O The rate of forward reaction increases,
O The rate of backward reaction increases.
The concentration of water vapor decreases

you need to have a picture of the atom that way we can answer it

50.23 i believe is correct but don't quote me on that.

4d^55s^1 ( third choice)

qualitative observation deals with data that can be observed with our senses: sight, smell, touch, taste, and hearing. they do not involve measurements or numbers. for instance, colors, shapes, and textures of objects are all qualitative observations.