The oxide of a metal contains 53% of the metal. The vapour density of its chloride is 66. calculate the valency and atomic weight of the metal.

2. how is heavy water different from normal water

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.

What characteristics does a earthquake have