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?

ANSWER OF EACH PART ARE GIVEN BELOW

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

LEARN MORE :

Avogadro's number

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Mass is the amount of matter in an object.  weight is the measurement of the pull of gravity on an object.  say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165)  now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon.  however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant.  in conclusion it is possible for your weight to change as your mass remains constant.