Question

Calculate:; (a) the mass of 1.0505 × 1023 molecules of carbon dioxide (CO2).; (b) the number of molecules of 0.25 moles of NH3,; (c) the formula unit mass of Na2SO3.; [Atomic mass: Na = 23 u, S = 32 u, O = 16 u, H = 1 u, NA = 6.022 × 1023 mol–1]

Answer 1

Answer:

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