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5/96 MCQs for:
MATTER - PROPERTIES AND TRANSFORMATION: Principles Of Chemistry - Formulae, Moles And Equations

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?

What is the mass of one molecule of water (H₂O)? (H=1, O=16, Avogadro's number L = 6.02 × 10²³)
The relative molecular mass (RMM) of an element or compound is defined as:
How many moles of sodium atoms are there in 2.3 g of sodium metal?
The relative molecular mass of glucose (C₆H₁₂O₆) is: (C=12, H=1, O=16)