Chimie, întrebare adresată de Crocodil2956, 9 ani în urmă

Punctele 1,2,3,4 va rog mult

Anexe:

Răspunsuri la întrebare

Răspuns de Pokju8888
1
CH4    raport atomic =r.a.= 1C:4H=1:4                                                                          raport de masa=r.m.=AC:4AO=12:4.16=12:64=3:16      s-a simplif. cu 4                       compozitie procentuala pri masa moleculara                                                                            MCH4=12+4.16=12+64=76------->1MOL=76 g                                                                76g CH4----------12g C----------64g  H                                                                                                                                     100gCH4------------X---------------Y                                                                                           X=100.12:75=15,78 la suta C    Y=100.64:76=84,21 la suta H
  
DUPA MODEL lucreaza singur








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Crocodil2956: Ma refer la celelalte puncte?
Pokju8888: daca te incurci sau nu esti sigur abordeaza-ma
Crocodil2956: Te am abonat
Pokju8888: da , scrie pe hartie si te voi corecta
Crocodil2956: ms ca m.ai ajutat ca in ziua de azi nimeni Nu mai ajuta o fata
Crocodil2956: ok o sa scriu
Pokju8888: astept sa vad daca ai intrles
Crocodil2956: ok
Pokju8888: inteles
Crocodil2956: ok
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