Practice question

Given: A solution contains 5 g of glucose dissolved in 95 g of water. What is the mass percentage of glucose? These values define the system as per NCERT data. Formula: Total mass = 5 + 95 = 100 g. This is the standard NCERT relation for this phenomenon. Substitution & Calculation: Mass % = (5 / 100) × 100 = 5%. Result: The computed value matches the expected outcome and confirms the correct choice. Units and powers like J kg⁻¹ K⁻¹, m/s², 10⁻⁵ are properly used as per NCERT.