Asolution is prepared by dissolving 0.23 mol of hydrocyanic acid and 0.27 mol of sodium cyanide in water sufficient to yield 1.00 l of solution. the addition of 0.05 mol of hcl to this buffer solution causes the ph to drop slightly. the ph does not decrease drastically because the hcl reacts with the present in the buffer solution. the ka of hydrocyanic acid is 4.9 × 10-10.

Will give ! what are the advantages and disadvantages of nuclear power? check all that apply. one advantage of nuclear energy is that it does not produce carbon dioxide emissions. storage of nuclear waste is a short-term problem associated with nuclear energy. the problem with uranium mining is that a large quantity of uranium must be extracted to meet energy needs because the energy release from uranium fission is so low. safe operation of a nuclear power plant can be jeopardized by a human mistake.

Match the mixture with the substance// i really need on this guys (it’s a pic btw)

Why is the melting of ice a physical change ?