# COLLEGE CHEMISTRY

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If 0.340 mol of solid CaCO3 and 410 mL of 0.829 M aqueous H2SO4 are reacted stoichiometrically according to the balanced equation, how many milliliters of 0.829 M aqueous H2SO4 remain? Round your answer to 3 significant figures.

H2SO4(aq) + CaCO3(s) → CO2(g) + CaSO4(s) + H2O(l)

• COLLEGE CHEMISTRY -

6. Determine Keq for the reaction: 2 SO2 (g) + O2(g) 2 SO3(g), given that 1.00 x 10-2 moles of SO2 and 2.00 x 10-2 moles of O2 were placed in a 2.00L reaction chamber. The chamber contained 7.5 x 10-3 moles of SO3 when equilibrium was established at 727oC.
(PV = nRT, R = 0.0821L• atm/mol • K)

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