The molarity of pure water is:
Correct answer: D. 55.5
- A. 1
- B. 18
- C. 36
- D. 55.5
Explanation
Molarity is defined as the number of moles of solute per liter of solution. Density of water is 1 kg/L so the mass of water in 1 L is 1000g. To find molarity we use the formula Moles = Mass / Molar mass Moles = 1000 / 18g = 55.56 mol
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Mole calculations connect mass, number of particles and Avogadro's number, while balanced equations provide the mole ratios used in stoichiometry. Questions cover limiting and excess reactants, theoretical yield and percentage yield, including identifying which reactant is consumed first and comparing the actual product with the maximum possible product.
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