Cement, if a rectangular piece 2,00cm x 2.00cm x 9.00cm has a mass of 108g. Find the density in g/cm^3

Using the periodic table, complete the table to describe each atom. type in your answers

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0

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.