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Acid-Base Equilibrium
Atomic Structure And Related Patterns In The Periodic Table
Bonding And Structure, And Intermolecular Forces
Chemical Equilibrium
D-Block Elements (Transition Elements)
DESCRIPTIVE INORGANIC CHEMISTRY: Group IV (14)
DESCRIPTIVE INORGANIC CHEMISTRY: Halogens (GROUP VII or 17)
DESCRIPTIVE INORGANIC CHEMISTRY: Modern Periodic Table, Periodicity And S-Block Elements
Functional Group Chemistry And Reaction Mechanism
ORGANIC CHEMISTRY: Fundamentals
Raoult’s Law And Phase Equilibria
Reaction Kinetics
Redox Equilibrium
The Mole Concept

5/64 MCQs for:

The Mole Concept

Which of the following has the greater mass?

6.2 x 10²³ atoms of Fluorine

6.0 x 10²³ atoms of Sodium

6.1 x 10²³ atoms of Neon

6.2 x 10²³ atoms of Oxygen

12.4 g of copper (II) carbonate was heated in a crucible and only 7.2 g of copper (II) oxide was obtained. What is the percentage yield of copper (II) oxide?

100%

90 %

95%

None is correct

What volume will 0.2 mole of ammonia gas occupy at r.t.p?

4800 cm³

4480 cm³

4480

4800

The volume in dm³ of oxygen at room temperature and pressure required for the complete combustion of 0.1 mole of propanone (CH₃COCH₃) is? (Molar volume at RTP is 24dm³).

9.60

8.96

3.60

4.80

The concentration of blood glucose is usually given in millimoles per dm³ ormmol dm⁻³. A reading of 5.0 mmol dm⁻³ is within the normal range. Glucose has a molar mass of 180 g mol⁻¹. What mass of glucose dissolved in 1 dm3 of blood would give this normal reading?

0.18 g

0.090 g

9.0 g

0.90 g