Mass water = 100 g solution - 10.5 g glucose => 89.5 g of H2O
Molar mass glucose => 180.1559 g/mol
Molality = moles glucose / kg solvent
( 10.5 / 180.1559 ) mol / ( 89.5 / 1000 ) kg =
0.0582 / 0.0895 => 0.650 mol/kg
hope this helps!
Answer:
the answer is V=0.0306878
MH₂: 2 g/mol
mO₂: 32 g/mol
2H₂ + O₂ ---> 2H₂O
4g......32g
4g H₂ ---- 32g O₂
Xg H₂ --- 192g O₂
X = (192×4)/32
X = 24g H₂
The answer for that kind of question depends on many things. location, how many people will inhabit the home, whether or not the home is a vacation home or a full time home. etc. P.S. I do not believe that this has anything to do with chemistry