Question

Calculate
a. the mass of an atom of oxygen
b. the mass of one molecule of oxygen
c. the mass of one mole of oxygen gas
d. the mass of one ion of oxygen
e. the number of atoms in 1 mole of Oxygen molecule ​

Answer 1

Answer:

A.. 15.999 u

15.999 u

15.999 uAtomic number: 8

15.999 uAtomic number: 8Symbol: O

Electrons per shell: 2, 6

B.... One mole equals 6 x 10^23 atoms/molecules/whatever. So take the molecular mass of elemental oxygen - 16 grams per mole. Then convert frommoles to grams: 1 mole elementaloxygen(16 grams O/1 mole) = 16 grams

C.... One mole equals 6 x 10^23 atoms/molecules/whatever. So take the molecular mass of elemental oxygen - 16 grams per mole. Then convert frommoles to grams: 1 mole elementaloxygen(16 grams O/1 mole) = 16 grams.

D..... Mass refers to the measure of number of atoms in an element or a compound. Now, since 1 mole of oxygen atoms = 16 units and every mole of oxygen contains 6.023 × 1023 atoms, Hence, 1 oxygen ionweighs = 1/6.023 × 1023 u...

E... Thus "1 mole of oxygen molecules" means 6.022 x 1023 O2 molecules, or 2 x 6.022 x 1023 O atoms; "1 mole of oxygen atoms" means 6.022 x 1023 O atoms.

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