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Questions batch 1 · In progress
The chemical formula that gives the simplest whole-number ratio of atoms in a compound is called the:
A mole of any substance contains:
What is the molecular mass of glucose, C₆H₁₂O₆? (Atomic masses: C=12, H=1, O=16)
The mass of one mole of a substance is called its:
How many moles of water are present in 36 g of H₂O? (Molar mass of H₂O = 18 g/mol)
In the balanced chemical equation 2H2 + O2 → 2H2O, what is the coefficient of O2?
The empirical formula of hydrogen peroxide (H₂O₂) is:
According to the law of conservation of mass, in a chemical reaction:
Which of the following is the correct formula mass of NaCl? (Atomic masses: Na=23, Cl=35.5)
The number of moles in 3.011 × 1023 atoms of carbon is:
You must attempt all MCQs.
