()calculate the number of moles present in 36ɢ of water
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()calculate the number of moles present in 36ɢ of water
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Explanation:
The relationship between the number of moles of a given substance present in a sample and the mass of the sample is given by the molar mass of the substance.
For any chemical species, you have
molar mass
=
the mass of exactly 1 mole
−−−−−−−−−−−−−−−−−−−−−−−
Now, water has a molar mass of
18.015 g mol
−
1
, which means that
1
mole of water has a mass of
18.015 g
.
18.015 g mol
−
1
=
18.015 g
1 mole H
2
O
So for every
18.015 g
of water present in your sample, you have
1
mole of water.
This means that your
36-g
sample will contain
Answer:
2 moles
Explanation:
1 mole contains
grams .meams h H have 1 gram so 2 H =2
O Has 16gram so I mole contains 18 gram
so 36 gram H20 has 2 moles