how to calculate no. of mole
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Answer:
the formula to calculate the no of mole
is
no of mole = mass of the substance in Grams / molecular mass of substance
Explanation:
A mole fraction indicates the number of chemical elements. One mole of any substance is equal to the value of 6.022 x 10ray to 23(Avagadro number).
...
for eg
if there is 90 gm of water
mass of water =90gm
to find: no of molecules
solution ..molecular mast of water (H20)
=H20 =1×2+16
H20 =18
we will apply the formula
90/18 =5
1 mole contains H20
6.022×10 rays to 23
= 5×6.022
=30.11×10 rays to 23molecules
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