Question

URGENT! Dau coroana si 20 puncte!!

Answer 1

$M_{KMnO4} = M_{K}+M_{Mn}+4M_{O} = 39 + 55 + 64 = 158\\M_{KCl}=M_{K}+M_{Cl}=39+35,5=74,5\\M_{Na2SO4}=2M_{Na}+M_{S}+4M_{O}=46+32+64=142\\M_{Ca(NO3)2}=M_{Ca}+2M_{N}+6M_{O}=40+28+96=164\\M_{Al2(SO4)3}=2M_{Al}+3M_{S}+12M_{O}=54+96+192=342\\M_{H2SO4}=2M_{H}+M_{S}+4M_{O}=2+32+64=98\\M_{H2CO3}=2M_{H}+M_{C}+3M_{O}=2+12+48=62\\M_{NaNO3}=M_{Na}+M_{N}+3M_{O}=23+14+48=85\\M_{Al2O3}=2M_{Al}+3M_{O}=54+48=102\\M_{NH3}=M_{N}+3M_{H}=14+3=17\\M_{NaCl}=M_{Na}+M_{Cl}=23+35,5=58,5\\M_{H2O}=2M_{H}+M_{O}=2+16=18$

Answer 2

Rezolvarea e in poză! Succes!