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Cerrena [4.2K]
3 years ago
9

Which property of water explains why seawater contains over 20 different elements? select one:

Chemistry
2 answers:
Gnesinka [82]3 years ago
8 0
I believe the awnser is a. universal solvent.
disa [49]3 years ago
8 0
Universal solvent - almost every element is soluble in water
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How many moles are present in 3.4 x 1023 atoms of Na?
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<h3><u>moles of H2SO4</u></h3>

Avogadro's number (6.022 × 1023) is defined as the number of atoms, molecules, or "units of anything" that are in a mole of that thing. So to find the number of moles in 3.4 x 1023 molecules of H2SO4, divide by 6.022 × 1023 molecules/mole and you get 0.5646 moles but there are only 2 sig figs in the given so we need to round to 2 sig figs. There are 0.56 moles in 3.4 x 1023 molecules of H2SO4

Note the way this works is to make sure the units are going to give us moles. To check, we do division of the units just like we were dividing two fractions:

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