Question 11
Question 11 of 40
Question image for Q11
Periodic Table
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No letter options?
Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.
A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct
Topics Tested
3. Stoichiometry
3.2. Relative masses of atoms and m...

Describe relative atomic mass, \( A_r \), as the average mass of the isotopes of an element compared to 1/12th of the mass of an atom of \( ^{12}C \)

6. Chemical reactions
6.3. Reversible reactions and equil...

State the sources of the hydrogen (methane) and nitrogen (air) in the Haber process

3. Stoichiometry
3.3. The mole and the Avogadro cons...

Use the molar gas volume, taken as 24 dm^3 at room temperature and pressure, r.t.p., in calculations involving gases