Galactose w/ dehydration synthesis

[nemzy]

The molecular formula of galactose is C6H12O6

If 8 galactose molecues were linked together by dehydration synthesis, the new molecular formula wil be C48H80H40 right?

did i do my math wrong?

Dehydration synthesis is just the loss of water , so a total of 16 Hydrogens and 8 Oxygens will be subtracted from the total molecular formula for 8 * (C6H12O6) which is C48H80H40

or am i missing a key concept here?

thanks

 

[nemzy]

ok, the answer is wrong..but i don't know why..does any1 know what's wrong?

 

[ravenprp]

for the help

Your understanding of dehydration synthesis and its impact on the molecular formula of galactose is correct. When 8 galactose molecules are linked together through dehydration synthesis, 16 hydrogen atoms and 8 oxygen atoms are removed from the total molecular formula. This results in a new molecular formula of C48H80O40, which is equivalent to C48H80H40. So, your math is correct and you have a good grasp of the concept. Keep up the good work!