An oxygen atom has a mass of 2.66 x 10^-23 g and a glass of water has a mass of 0.050kg. use this information to answer the questions below. be sure your answers have the correct number of significant digits.
what is the mass of 1 mole of oxygen atoms?
how many moles of oxygen atoms have a mass equal to the mass of a glass of water?

Explanation:

A)

We know, each mole contains atoms.

It is given that mass of one oxygen atom is m= .

Therefore, mass of one mole of oxygen, .

Putting value of n and ,

B)

Given,

Mass of water in glass=0.050 kg = 50 gm.

From above part mass of one mole of oxygen atoms = 16.0 gm.

Therefore, number of mole of oxygen equivalent to 50 gm oxygen

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Avogadro's number

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