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Chimie cls - a 7 a
Dau coroana;)))))))))))

Chimie Cls A 7 A Dau Coroana class=

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Pokju8888
H2SO4

Se calculeaza masa moleculara.

MH2SO4=2+32+4.16=98

98 g H2SO4----------1mol H2SO4
X g H2SO4-----------4 moli H2SO4

X=98.4=392 gH2SO4

                                                23
In 98 g H2SO4----------6,024 .10  molecule de H2SO4
atunci in 392 g H2SO4-----------Y molecule H2SO4
                          23                        23
Y=392.6,024 .10    :98=24,096 .10   molecule H2SO4

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