How many molecules of h20 are in 2.0 moles

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.

Consider the story you just read. all but one of the choices below indicate that something is living.

Find the mass, in grams, of 5.00*10^23 molecules of f2