9701 · topic questions
Relative masses of atoms and molecules
4 past-paper questions on Relative masses of atoms and molecules
A sample of pelopium contains 90.9% by mass 93/41 Nb and 9.1% by mass 181/73 Ta. Calculate the theoretical relative atomic mass…
Practise the full question →Use Table 2.1 to calculate the relative isotopic mass of the third isotope of iron in the sample. Show your working. Table 2.1…
Practise the full question →Define relative atomic mass.
Practise the full question →Use Table 1.2 to calculate the relative atomic mass, Ar, of iridium in the alloy. Give your answer to two decimal places.
Practise the full question →
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