Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)
98-Pet-A2 — Petroleum Reservoir Fluids · National Exams, December 2014 · 3 hours, closed book, Casio/Sharp approved calculator only · first five questions in the answer book are marked, all questions equal value.
Reference texts: Craft, B.C. & Hawkins, M.F., Applied Petroleum Reservoir Engineering, 3rd ed. (Ch. 1–2, PVT properties of oil, gas and gas-condensate systems); Lyons, W.C. (ed.), Standard Handbook of Petroleum and Natural Gas Engineering, 3rd ed. (reservoir fluid properties, Standing-Katz Z-factor correlation); McCain, W.D., The Properties of Petroleum Fluids (companion reference for laboratory PVT experiments and recombination calculations, cited within Craft & Hawkins Ch. 1).