Question

va rog, dau toate punctele mele si funda, va rog am nevoie urgent​

Answer 1

Răspuns:

M KOH=1X39+1X16+1X1=55+1=56

M KCL= A K +A Cl = 39+35, 5=74,5 g /mol

M Na2SO4= 2× A Na +A S +4×A O = 2×23+32+4×16= 46+32+64=142

M Ca(NO₃)₂

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M Al2(SO4)3=2*MAl+3*MS+12*MO=2*27+3*32+12*16=54+96+192=342g/mol

M H2CO3 = 2× A H + A C + 3× A O = 2×1+12+3×16 = 2+12+48=62 g /mol

M NaNO3 = 23 + 14 +3×16 = 85 g/mol

M Al2O3 = 2M Al + 3 M O = 2·27 + 3·16 = 102

M NH3=1x14+3x1=14+3=17

M NACL=A Na+A Cl =23+35=58

M H2O=2×AH+AO=2×1+16=18