zadanie 2. a) 4*(14+3)= 4* 17=68 b) 3*207=621 c) 5*(23*2+32+64)=5*142=710 d)0,5*24=12 e) 2(1+14+32)=2*47=94 f)2,5*35*2= 2,5*70=175 g) 0,001*(56*2+48)= 0,16
zadanie 3. a) HNO3= 63 6,3:63=0,1M b) Ołów=Pb=207 20,7:207=0,1M c)H20= 32+1=33 6:33=0,18M d) Co2=12+32=44 22:44=0,5M e)Mg(NO3)2 = 24+(14+48)*2= 24+124=148 1,48:148=0,01M f)Ca(OH)2= 40+32+2= 74 37:74=0,5M g) SO3- 32+48=80 10:80=0,125U
co₂= 12+16*2= 12+32=44
H2SO4=2*1+32+16*4= 2+32+64=98
Na2O= 2*23+16=46+16=62
Ca(OH)2= 40+32+2=74
HNO3=1+14+48=63
H2CO3= 2+12+48=62
Fe2O3= 5120+48=160
zadanie 2.
a) 4*(14+3)= 4* 17=68
b) 3*207=621
c) 5*(23*2+32+64)=5*142=710
d)0,5*24=12
e) 2(1+14+32)=2*47=94
f)2,5*35*2= 2,5*70=175
g) 0,001*(56*2+48)= 0,16
zadanie 3.
a) HNO3= 63
6,3:63=0,1M
b) Ołów=Pb=207
20,7:207=0,1M
c)H20= 32+1=33
6:33=0,18M
d) Co2=12+32=44
22:44=0,5M
e)Mg(NO3)2 = 24+(14+48)*2= 24+124=148
1,48:148=0,01M
f)Ca(OH)2= 40+32+2= 74
37:74=0,5M
g) SO3- 32+48=80
10:80=0,125U