A4.17 g sample of a pure element contains 3.35 x 10^22 atoms. what is the element?

Answer : The element is, Arsenic (As)

Solution : Given,

Mass of a pure element = 4.17 g

Number of atoms =

First we have to calculate the moles of a pure element.

Now we have to calculate the molar mass of an element.

Formula used :

Now put all the given values in this formula, we get

Thus, the arsenic is the element which has molar mass 75 g/mole.

Hence, the element is, Arsenic (As)

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