Assertion: Addition of HCI to Copper(II)Oxide changes the colour of solutionfrom blue-green toblack. Reason: HCI neutralizes Copper(1) Oxide and Copper(11)Chloride is formed.​

As you move from right to left on the periodic table the atomic radius fill in the blank

Why do cells appear different in distilled water than they do in 10% salt water?

Answer asap need by wednesday morning explain how a buffer works, using an ethanoic acid/sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.