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Va rooog din tot sufletul, chiar am nevoie!!
Calculati masa molara pentru apa, acid clohidric, amoniac, acid azotic, acid fosforic si sulfat de cupru.
Va rooog... Cine se pricepe foarte bine... E urgeent!! Va dau coronita!!! ​


Răspuns :

apa:

Mh2o= 2Ah+Ao= 2×1+16=18 g/mol

acid clorhidric: Mhcl=Ah+Acl=1×1+35.5=36.5 g/mol

amoniac:

Mnh3=An+3Ah=14+3×1=17 g/mol

acid azotic: Mhno3=Ah+An+3Ao=1×1+14+16×3=15+48=63 g/mol

acid fosforic: Mh3po4=3Ah+Ap+4Ao=3×1+31+4×16=3+31+64=98 g/mol

sulfat de cupru:

Mcuso4=Acu+As+4Ao=64+32+4×16=96+64=160 g/mol