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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

Reply 2
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
Reply 4
Original post by dip0
1.660538782/10^27 kg


Thanks.
Reply 5
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.
Reply 6
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

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