Why was Niels Bohr atomic model superior to all the earlier models

What effect might melting sea ice have for people who live in coastal areas?

Abeaker with 2.00×102 ml of an acetic acid buffer with a ph of 5.000 is sitting on a benchtop. the total molarity of acid and conjugate base in this buffer is 0.100 m. a student adds 4.70 ml of a 0.360 m hcl solution to the beaker. how much will the ph change? the pka of acetic acid is 4.740.

No copying 15 pts how does a free-body diagram tell you about the net force on an object?