2C2H5OH+2K--->2C2H5OK+H22moli-----------------------------1mol5moli------------------------------xx=2,5mola H2czyli 2,5*22,4=56dm32,5*2=5g
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2C2H5OH+2K--->2C2H5OK+H2
2moli-----------------------------1mol
5moli------------------------------x
x=2,5mola H2
czyli 2,5*22,4=56dm3
2,5*2=5g