Question

calculate the number of iron atoms in a peace of iron Weighing 2.8g​

Answer 1

Answer:

Solution

Step-by-step explanation:

1 mole of iron = Gram atomic mass of iron =56

1 mole of iron element contains 6.022 xx 10^(23)

atoms of iron.

56 /1mole =6.022 xx 10^(23)

2.8g =?

6.022 xx 10^(23) /56×2.8

=

= 3.011 xx 10^(22)

Thus, a piece of iron metal having a mass of

2.8. grams contains 3.011 xx 10^(22) atoms of iron.