What is the number of manganese atoms that equal a mass of 54.94 g ? Select...

Question

Question

What is the number of manganese atoms that equal a mass of 54.94 g ?

Select one:

a. 1

b. 25

c. 55

d. 6.02x10^23

e. none of the above

Answer 1

Answer #1

Given mass of Manganese , m = 54.94 g

Molar mass of Manganese is = 54.94 g/mol

So number of moles of Manganese = mass / molar mass

= 54.94 / 54.94

= 1 mol

We know that 1 mole of any compound contains avagadro numer( 6.023x10²³) atoms

So 1 mole of Manganese contains 6.023x10²³ atoms

Therefore option (d) is correct

Answer 2

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