1. State the number of neutrons and protons in each of the following nuclei: a. 1/2 H
b. 12/6 C
c. 56/26 Fe
d. 197/79 Au​

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?

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.

Select all that apply. using a value of ksp = 1.8 x 10-2 for the reaction pbcl2 (s) pb+2(aq) + 2cl -(aq). the concentration of the products yield a ksp of 2.1 x 10-2: