The scheme below shows some reaction sequence starting with solid n.
hcl(aq)
solid n
solution p.
gas which burns with
a pop sound
fer drops
of nh3 (ay)
precipitate
white
mg the
moch
excess
nhz (ag)
colourless solution
1
a) identify solid n
copperau) hydnadi'
b) write the formula of the complex ion present in solution.
(cu (nh3)
udy the scheme below and answer the questions that follow.

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.

here is table 2-2:

country

percent of eligible voters that voted

rank

united states

44.9%

138

canada

60.1%

107

costa rica

84.6%

14

hungary

66.9%

82

japan

57.0%

118

egypt

27.7%

159

south africa

85.5%

10

ans is no, the data set cannot be plotted as a single circle graph