IB
IBO
Chemistry
May 2011
QP-201105-Chemistry-P1(TZ1)-SL · Question 3
Question (excerpt):
2211-6110 Turn over 3. How many molecules are present in a drop of ethanol, C2H5OH, of mass 2.3 3 10− × g? (L = 6.0 23 10 × mol–1) A. 3.0 19 10 × B. 3.0 20 10 × C. 6.0 20 10 × D. 6.0 26 10 × – 4 – M11…
2211-6110 Turn over 3. How many molecules are present in a drop of ethanol, C2H5OH, of mass 2.3 3 10− × g? (L = 6.0 23 10 × mol–1) A. 3.0 19 10 × B. 3.0 20 10 × C. 6.0 20 10 × D. 6.0 26 10 × – 4 – M11…
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