Qualification > Sciences
CHEM AND BIO HELP AND TIPS HERE
@d!_†oX!©:
ohhkk Thanks aadi....and relative molecular mass??
Ghost Of Highbury:
the sum of relative atomic masses of all atoms in a molecule.
@d!_†oX!©:
tyvm again!! :)
done with add. maths??
@d!_†oX!©:
another one:
Which of them is endothermic ?
a)The formation of a hydrogen-chlorine bond
b)The formation of rust
c)The formation of water from ice
d)The formation of water from oxygen and hydrogen
Ghost Of Highbury:
it shud b C
a) forming bonds -exo
b) reacts with oxygen, maybe exo
d) ofcourse exo.
for ice--> water, it has to melted i.e suply energy, and energy is taken in
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