What is the energy change (in J) when the temperature of [x] grams of Xenon (C = 1.03 J/g°C) is decreased from [y] °C to [z] °C (Report your answer to 2 decimal places, i.e. xx.xx and make sure to include a negative sign, if necessary.) (No units are necessary in answer.)

The total pressure of a mixture of 15.0 g of carbon tetrachloride gas and 23.5 g of oxygen gas is [x] mmHg.  Determine the partial pressure of oxygen gas in the mixture. (Report your answer in mmHg to nearest whole number, i.e. xxx) (No units are necessary in answer.)  

Determine the enthalpy change for the reaction below in kJ/mol-rxn, CaO(s) + CO2(g) → CaCO3(s) given the thermochemical equations below. Ca(OH)2(s) → CaO(s) + H2O(l) ΔH° = 65.2 kJ/mol-rxn Ca(OH)2(s) + CO2(g) → CaCO3(s) + H2O(l) ΔH° = −113.8 kJ/mol-rxn (Report your answer to the nearest whole number, i.e. xxx, with no decimal places.  Make sure to include a negative sign, if necessary.) (No units are necessary in answer.)

Find an equation for the line tangent to the graph of the given function at the indicated point.f(x) = x2 + 3 at (2, 7)

Give an appropriate answer.Let  

Use the graph to evaluate the limit.  

Use the graph to determine whether the statement is true or false.

Graph the equation and its tangent.Graph y = -2×2 and the tangent to the curve at the point whose x-coordinate is 1.

 25. G.K.M.a.a.D.C. provides the following information.  Price Index LIFO Cost Retail Inventory on December 31, 2025 When dollar-value LIFO is adopted  100 $40,000 $55,000 Inventory, December 31, 2026  120 ? $102,000 The cost-to-retail ratio for 2026 was 40%. Calculate ending inventory under the dollar-value LIFO method at December 31, 2026. For partial credit, show your work.

Use the following information for the next four questions: K&E’s Greenhouse, Inc. issued $2,800,000, 5% 10-year bonds on January 1, 2025.  The bonds pay interest semiannually on June 30 and January 1 and are issued to yield 8% (effective rate).  At the date of issuance, the carrying value of the bonds was calculated to be $2,229,215 (i.e., the present value of future cash flows).  K&E Greenhouse, Inc. uses the effective-interest method to amortize any discount or premium on bonds payable.