Question

I have a question

Answer 1

Solution HX has HX x %m/m
the density of y g/cm^3
its molecular weight is A
what is its concentration in molar

Answer 2

Don't think I've seen the unit %m/m before

Answer 3

but seeing as molarity is moles over liters wouldn't the molarity be x/y?

Answer 4

% m/m
sorry
it should be %w/w
or weight percent

Answer 5

ok i'm going with xy/1000ml, never done one of these with varibles

Answer 6

i think the answer is 10xy/A but i'll try to find for explanation

Answer 7

cos i'm using my own formula ;)

Answer 8

from x weight percent
in solution 100 g it exist x g
from density=gram/volume
so when i want volume, it goes to volume=gram/density
v=100/y
then 100/y cm^3 it exists x g
1000 cm^3 it exist x*1000/(100/y)=10xy g
now we have 10xy g per dm^3
change it into mole 10xy/A mol/dm^3
The answer is 10xy/A