Question

Oblicz masę molową dla HNO3 , H2SO3 , Al(OH)3 , H2CO3 . Przelicz ile to cząsteczek 1,5 mola.

Answer 1

MHNO₃=1g/mol+14g/mol+3*16g/mol=1g/mol+14g/mol+48g/mol=63g/mol

MH₂SO₃=2*1g/mol+32g/mol+3*16g/mol=2g/mol+32g/mol+48g/mol=82g/mol

MAl(OH)₃=27g/mol+3*16g/mol+3*1g/mol=27g/mol+48g/mol+3g/mol=78g/mol

MH₂CO₃=2*1g/mol+12g/mol+3*16g/mol=2g/mol+12g/mol+48g/mol=62g/mol

 

1 mol - 6,02*10²³cz.

1,5 mola - x cz.

 

x=(1,5 mola*6,02*10²³cz.):1mol=9,03*10²³cz.

Answer 2

MmolHNO3=1g+14g+48g=63g/mol

MmolH2SO3=2g+32g+48g=82g/mol

MmolAl(OH)3=27g+48g+3g=78g/mol

MmolH2CO3=2g+12g+48g=62g/mol

 

1 mol to

1,5 mola to x cząsteczek