tolong bantuannya ya

1)
a) Mr HCl = ar H + ar Cl = 1+35,5 = 36,5
b) Mr HNO3 = ar H + ar N + 3x arO = 1+14+3.16 = 15+48 = 63
c)Mr H2SO4 = 2x ar H + ar S + 4x ar O = 2.1+32+4.16 = 2+32+64= 98
d) Mr H2CO4 = 2x ar H + ar C + 4x ar O = 2.1+12+4.16 = 20+12+64 = 96
e) Mr H3 = 3x ar H = 3.1 = 3
f) Mr H3PO4 = 3x ar H + ar P + 4x ar O = 3.1 + 30+4.16 = 33+64 = 97

2)
a) Mr NaOH = ar Na + ar O + ar H = 23+16+1 = 40
b) Mr AgOH = ar Ag + ar O + ar H = 108+16+1 = 125
c) Mr Hg(OH)2 = ar Hg + 2 ( ar O + ar H ) = 201+2(16+1) = 201+34 = 235
d) Mr Ba(OH)2 = ar Ba + 2(ar O + ar H ) = 137+2(16+1) = 137+2.17 = 137+34 = 171
e) Mr Al(OH)3 = ar Al +3(ar O + ar H) = 27 +3(16+1) = 27+3(17) = 27+51 = 78
f) Mr Fe(OH)3 = ar Fe + 3( ar O + ar H ) = 56+3(16+1) = 56+51 = 117

3)
a) Mr KClO3 = ar K + ar Cl + 3x ar O = 39 + 35,5+3.16 = 122,5
b) Mr NaSO4 = ar Na + ar S + 4x ar O = 23+32 = 55
c) Zn(NO)2 = ar Zn + 2(ar N + ar O ) = 65 +2(14+16) = 65+60 = 125
d) Fe(SO)4 = ar Fe +4(ar S + ar O ) = 56 +4(32+16) = 56+192 = 248

4)
a) Mr C2H4 = 2 x ar C + 4 x ar H = 2.12+4.1 = 24+4 = 28
b) Mr CH3OH = ar C + 4x ar H + ar O = 12+4.1+16 = 32
c) Mr CH3COOH = 2 x ar C + 4xar H + 2x ar O = 2.12+4.1+2.16 = 12+4+32 = 48
d) Mr C6H12O6 = 6xar C + 12xar H + 6xar O = 6.12+12.1+6.16 = 72+12+96 = 170
e) Mr CH3COCH3 = 3x ar C + 6xar H + ar O = 3.12+6.1+16 = 36+6+16 = 58
f) Mr C12H22O11 = 12 xar C + 22xar H + 11xar 0 = 12.12+22.1+11.16 = 144+22+176 = 342

5)
a) Zn (s) + HCl (s) -> ZnCl (aq) + H2 (g)
setaranya
2Zn (s) + 2HCl (s) -> 2ZnCl (aq) + H2 (g)
b) SiO2 (s) + C (s) -> Si (s) + CO (g)
setaranya
SiO2 (s) + 2C (s) -> Si (s) + 2CO (g)
c) saya rasa tidak ada reaksi seperti diatas , terima kasi