how many hydrogen atoms are there in 1 picoleter of water?
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To find no; of atoms of hydrogen, we need to find the no; of water molecules in 1 pL of water.
Density of water = mass/volume = 1 g/cc
mass of 1pL of water = density * volume
= 1 g/cc * 10-9 cc (1L = 103 cc, so 10-12 L = 10-9 cc)
= 10-9 g
18g of H2O = 6.023 * 1023 molecules.
hence, 10-9 g of H2O = 3.346 * 1013 molecules of H2O
Density of water = mass/volume = 1 g/cc
mass of 1pL of water = density * volume
= 1 g/cc * 10-9 cc (1L = 103 cc, so 10-12 L = 10-9 cc)
= 10-9 g
18g of H2O = 6.023 * 1023 molecules.
hence, 10-9 g of H2O = 3.346 * 1013 molecules of H2O
Anonymous:
copied from net ah??
no
i didn't say to u tapasi
yeah I got that right now...sorry yo
hmm
Answered by
1
The chemical formula for water is H2O which means that every molecule of water has 2 atoms of hydrogen (H) and one atom of oxygen (O). Here comes the key part. From the Periodic Table of Elements, one sees that one mole of hydrogen atoms weighs 1 gram while one mole of oxygen atoms weighs 16 grams.
copied from net ah
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