Question

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A chemical element Ca, having Z = 30 and A = 65, reacts with 24.6 l of oxygen
at a temperature of 27*C and a pressure of 2 atm. Oxide, with 8 moles of water,
forms a basic solution which is neutralized with 36.5% HCl solution.
Determine the mass of the substance and number of particles for Ca(Calcium).

Answer 1

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