Calculate the relative atomic mass of an atom.
You will need to multiply the mass of each isotope (the same atom with a different mass number) by the percentage abundance of that isotope. Then, add all these values together and divide by 100. This will give you your relative atomic mass.
ED
Related Chemistry A Level answers
All answers ▸How do you describe the process of recrystallisation to purify a product?
Explain the difference between homolytic fission and heterolytic fission.
Why do first ionisation energies decrease down a group?
The ionic product of water, Kw = 2.93 × 10−15 mol dm−6 at 10 °C. Calculate the pH of a 0.0131 mol dm−3 solution of calcium hydroxide at 10 °C Give your answer to two decimal places.