Answers

2016-02-19T00:47:05+05:30
A Mole is: 6.02 x 10 23 of
anything. The formula mass
in grams of a substance
contains one mole of
particles. N a = Avogadro's
Number = 6.02 x 1023
Spreading a "mole" of marbles over the entire
surface of the earth would produce a layer
about three miles thick.
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2016-02-19T15:49:42+05:30
to find the molar mass/mole just use the formula
n(no. of mole)=m(given mass)/M(molar mass)
to find the number of particles present in the given mass
1st calculate ....the number of grams in mole
i.e.for example 1 mole = 16 gram so 48 gram ,
remember the formula n = m/M = 48/16=3
therefore 3 moles and
we know that 1 mole = 6.022*10^23 particles
therefore 3 moles = 6.022*10^23*3
=18.066*10^23
=1.8066*10^22 particles.............
i hope it helps............  
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