A chemist is looking for an element that reacts similarly to the element lithium (LI). Which would be the best choice? A gold (Au)
OB. neon (Ne)
O c. fluorine (F)
OD. sodium (Na)

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In the particles are arranged in a regular, repeating pattern. a)a crystalline liquid b)a crystalline solid c)all gases d)all solids

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.