Element x
Isotope 55x 60%
Isotope 56x 30%
Isotope. 57x 10%
55× 60 =3300
56×30=1650
57× 10= 570
Add them up5520
divide by 100
the atomic weight of x is 55.2
Pls check if this is correct , answer and method
correct
The method you have used to calculate the average atomic weight of element X appears to be correct. To verify if your answer is accurate, we can double-check the calculations:
Isotope 55x contributes 60% of the total weight:
55 x 0.60 = 33
Isotope 56x contributes 30% of the total weight:
56 x 0.30 = 16.8
Isotope 57x contributes 10% of the total weight:
57 x 0.10 = 5.7
Now, add all these values together:
33 + 16.8 + 5.7 = 55.5
Finally, divide the sum by 100 to get the average atomic weight:
55.5 / 100 = 0.555
Therefore, the average atomic weight of element X should be 0.555, not 55.2 as you mentioned. It seems there might have been an error in your final calculation.