440
Answers to Problems of the A Groups
CHAPTER 10
1
2
3
4
5
(a) 63 6% N, 36 4% O
(b) 46 7% N, 53 3% O
(c) 30 4% N, 69 6% O
(d) 32 4% Na, 22 6% S, 45 0% O
(e) 29 1% Na, 40 6% S, 30 3% O
(f) 14 3% Na, 10 0% S, 69 5% O, 6 2% H
(g) 18 5% Na, 25 9% S, 51 6% O, 4 0% H
(h) 43 5% Ca, 26 1% N, 30 4% O
(i) 29 2% N, 12 5% C, 50 0% O, 8 3% H
0) 47 4% U, 5 6% N, 44 6% O, 2 4% H
(k) 56 \% C, 8 2% N, 18 7% O, 7 6% H, 9
(a) 44 0
6
(b) 30 0
(c) 46 0
(d) 142 1
(e) 158 2
(f) 322 1
(g) 248 2
(h) 92 1
(i) 96 0
0) 502 1
(k) 342 1
\**/ -•"*•• *
_
All have units of g/mole
(a) 10 3
(b) 15 1
(c) 9 87
(d) 3 19
(e) 2 87
8
(f) 1 41
(e) 1 83
\6/ * ""'
(h) 4 93
(i) 4 73
0) 0 904
9
(k) 1 33
10
All have units of moles
(a) 8 36 x 10
23 molecules
(b) 499 x 10
22 molecules
n
(c) 3 54 x 10
16 molecules
(d) 3 12 x 10
22 molecules
12
(e) 1 51 x 10
23 molecules
13
334 g/mole
4% S
(a) FeO
(b) Fe 2 0 3
(c) Fe 3 0 4
(d) K 2 CrO 4
(e) K 2 Cr 2 O 7
(D CH
(g) CH 4
(h) Mg 2 P 2 0 7
(i) Ag4V 2 O 7
0) Sn 2 Fe(CN) 6
(a) CuSO 4 5H 2 O
(b) Hg(N0 3 ) 2 iH 2 0
(c) Pb(C 2 H 3 0 2 ) 2 3H 2 0
(d) CoCl 2 6H 2 O
(e) CaSO 4 2H 2 O
(a) Cu 2 S
(b) Mg 3 N 2
(c) LiH
(d) A1C1 3
(e) La 2 O 3
140 2 g/mole
(a) 20 18570
(b) 32 07249
(a) 9, 18, 27, 36
(b) MC1 3
58 8 or some multiple of this
C 6 H 6 OS