Question

4.6 into 10 to the power 22 atoms of an element weigh 13.8gm. the gram atomic mass of the element is?

Answer 1

Given that 4.6 * 10^22 atoms of an element weight = 13.8gm.

Then the weight of 1 element = 13.8/4.6 * 10^22

                                                  = 3 /10^22


We know that the number of moles = number of atoms/6.02 * 10^23

                                                            = 3 * 6.02 * 10^23/10^22

                                                            = 180.6g



Hope this helps!

Answer 2

Atomic weight of an element =mass of that element in 1 mole

we know that ,

1mol of an element =6.022*10²³atoms

If 4.6*10²² atoms of an element weight 13.8 g.

6.022*10²³ atoms of that element will weight (6.022*10²³*13.8 g)/(4.6*10²²)=180.69 g

Please mark as a Brainlist plzzzzzxx