Calcium carbonate can decompose into calcium oxide and carbon dioxide: CaCO3(s) ⇄ CaO(s) + CO2(g) Assuming that ΔH and ΔS are independent of temperature, at what temperature will solid CaCO3 and solid CaO be in equilibrium with 1.0 atm of CO2? ΔH°f (kJ/mol) S° (J/mol⋅K) CaO(s) -635.1 39.8 CaCO3(s) -1206.9 92.9 CO2(g) -393.5 213.8 298 K 150 K 948 K 1110 K 635 K

14. many depressants reduce small muscle control, making it harder for a. you to steer b. your mind to consider complex problems c. the eye to scan, focus, or stay still d. the kidneys to filter alcohol out of the bloodstream

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change?

A100 kmol/h stream that is 97 mole% carbon tetrachloride (ccl4) and 3% carbon disulfide (cs2) is to be recovered from the bottom of a distillation column. the feed to the column is 16 mole% cs2 and 84% ccl4, and 2% of the ccl4 entering the column is contained in the overhead stream leaving the top of the column. calculate the mass and mole fractions of ccl4 in the overhead stream, and determine the molar flow rates of ccl4 and cs2 in the overhead and feed streams. 12. mw_ccla- 153.82; mw_cs2-76.14.