Question

Using Avogadro’s number to convert from molecules or atoms to moles.
A chemical species is either an atom (e.g. K, Ag, S) , an ion (e.g. K+,SO42-, S2-) or a molecule (e.g. H2O, K2CrO4, Sr(NO3)2, I2). Make sure to learn these vocabulary terms and the kinds of chemical formulas they indicate.
b)2.845 x 1012 potassium ions [What is the chemical symbol of the potassium ion?] equals how many moles of potassium ions?
4.73 x 1012 mol K+
c)0.0524 moles of H2O equals how many molecules of water?
3.15 x 1022 molecules H2O
d)347865 atoms of xenon are equal to how many moles of Xe?
5.78 x 1019 mol Xe
e) 3.25 x 1025 atoms of neon gas equals how many moles of neon gas?
54.0 mol Ne

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tisha91161

19.04.2021

Chemistry

Secondary School

Using Avogadro’s number to convert from molecules or atoms to moles.

A chemical species is either an atom (e.g. K, Ag, S) , an ion (e.g. K+,SO42-, S2-) or a molecule (e.g. H2O, K2CrO4, Sr(NO3)2, I2). Make sure to learn these vocabulary terms and the kinds of chemical formulas they indicate.

b)2.845 x 1012 potassium ions [What is the chemical symbol of the potassium ion?] equals how many moles of potassium ions?

4.73 x 1012 mol K+

c)0.0524 moles of H2O equals how many molecules of water?

3.15 x 1022 molecules H2O

d)347865 atoms of xenon are equal to how many moles of Xe?

5.78 x 1019 mol Xe

e) 3.25 x 1025 atoms of neon gas equals how many moles of neon gas?

54.0 mol Ne