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A) 430 cm3 of water at 93°C is mixed with 95 cm3 of water at 16°C. Calculate the final equilibrium temperature, assuming no heat is lost to outside the water. Equilibrium temp?
B) Imagine now that one tried to repeat the same measurement, but between the time that the 430 cm3 of water was measured at 93°C and the time it was mixed with the 95 cm3 of water at 16°C, the warmer water had lost 6450 cal to the environment. Calculate the final equilibrium temperature assumning no heat loss after mixing occurs. Equilibrium temp after heat loss?
Which compound is most likely to dissociate and give O2(g) at 25?C?
Give the complete ionic equation for the reaction (if any) that occurs when aqueous solutions of lithium sulfide and copper (II) nitrate are mixed.
Write a balanced radiochemical equation describing this process and the nuclide that forms. include all superscripts and subscripts representing mass and charge.
In which of the following reactions does an instantaneous increase in the volume of the reaction vessel favor formation of the products
diatomic oxygen to form nitric oxide and water vapor: 4NH3 + 5O2 > 4NO + 6H2O When 20.0 g NH3 and 50.0 g O2 are allowed to react, which is the limiting reagent? How much water is produced and how much is left of the excess reagent
What is the maximum concentration of Mg2+ ion that can remain dissolved in a solution that contains 0.7719 M NH3 and 0.3031 M NH4Cl?
What will be the temperature difference needed in a hot-air balloon to lift 1.00 kg of mass. Assume that the volume of the balloon is 100 m3, the temperature of the ambient air is 25 oC, the pressure is 1.00 bar, and air is an ideal gas with an av..
A solution containing 10.0 mmol CaCl2 is diluted to 1 L. Calculate the number of grams of CaCl2 . 2H2O per milliliter of the final solution.
Why is the injector/detector temperature set at 180 C while the column temperature is only at 90 C and why is it possible to inject the sample directly with a syringe onto the top of the column in GC but not HPLC
human growth hormone in 25.0 mL of solution has an osmotic pressure of 0.109 torr at 25.0°C. What is the molar mass of human growth hormone?
calculate the minimum number of grams of C3H8(g) that must be combusted to provide the energy necessary to convert 1.61 kg of H2O from its solid form at -10.0°C to its liquid form at 80.0°C.
A student mixed 50.0 mL of 0.50 M H2SO4 (aq) at 18.5 degrees C with 100 mL of 0.50 M NaOH (aq) at the same temperature. After the reaction was completed, the temperature rose to 22.0 degrees C. What was the heat of reaction? (Assuming the densitie..
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