# Four atoms of an unknown element weigh 5.24718

Four atoms of an unknown element weigh 5.24718 x 10-22 g. Determine its atomic mass and identify the eleme
Original post by Ndanji678
Four atoms of an unknown element weigh 5.24718 x 10-22 g. Determine its atomic mass and identify the eleme

1.

find mass of one atom

2.

divide by 1 a.m.u

3.

look up R.A.M on periodic table

Original post by dip0

1.

find mass of one atom

2.

divide by 1 a.m.u

3.

look up R.A.M on periodic table

Dividing by 1 a.m.u which is 1.67377 x 10 -24 gram (g)?
Original post by Ndanji678
Dividing by 1 a.m.u which is 1.67377 x 10 -24 gram (g)?

1.660538782/10^27 kg
Original post by dip0
1.660538782/10^27 kg

Thanks.
Original post by Ndanji678
Dividing by 1 a.m.u which is 1.67377 x 10 -24 gram (g)?

I needed my answer in grams but when I follow the steps and use grams my answer is 78.4 and there’s no such R.A.M on the periodic table.
Original post by dip0

1.

find mass of one atom

2.

divide by 1 a.m.u

3.

look up R.A.M on periodic table

When I follow the steps and divide by the a.m.u in grams I’m getting 78.4 which isn’t on the periodic table. Any thoughts?
Original post by Ndanji678
When I follow the steps and divide by the a.m.u in grams I’m getting 78.4 which isn’t on the periodic table. Any thoughts?

1.

5.24718 x 10^-22 / 4 = 1.311795 x 10^-22 g/atom

2.

((1.311795 x 10^-22)*(10^-3))/(1.660538782 x 10^-27)

Original post by Ndanji678
Four atoms of an unknown element weigh 5.24718 x 10-22 g. Determine its atomic mass and identify the eleme

Four atoms of an unknown element weigh 5.24718×10^-21g. determine its atomic number and identify the element