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What would be the final temperature of 250.0 mL of NaCl solution upon releasing 22.50 kJ of energy to the surroundings? Assume d = 1.02 g/mL; Cs = 4.18 J/g.ºC; and the initial temperature is 50.0 ºC.
A 25.0 mL volume of 2.65 M sulfuric acid is titrated with potassium hydroxide. At the equivalence point, 65.7mL of base were added. How many moles of acid were neutralized?
How many significant figures can you accurately report in the values for Ksp that you calculated in Parts 2 and 3 of the experiment? Are the two values different from each other to that number of significant figures?
Given that 5.9 moles of carbon monoxide gas are present in a container of volume 63.7 L, what is the pressure of the gas (in atm) if the temperature is 47 °C
A typical global concentration of hydroxyl OH radicals is about 106 molecules cm- 3. Explain what is the mixing ratio corresponding to this concentration at sea level and 298 K
Define the gasoline tank of an automobile contains 81 kg of gasoline. State the gasoline combines with 324.0 kg of oxygen. Explain what is the total combined mass of the carbon dioxide also water produced by combustion in the engine
Sodium metal reacts with water to produce hydrogen gas and sodium hydroxide according to the chemical equation shown below. When 0.030 mol of Na is added to 100.00 g of water, the temperature of the resulting solution rises from 25.00°C to 37.90°C..
How many liters of CO2 are produced when 15 liters of O2 are consumed
What is the approximate pH of a solution of the salt NH4(O2CCH3) Ammonium Acetate? No calculations, only reasoning needed.
neon has three naturally occurring isotopes 20ne 19.992amu with 90.48 abundance 22 ne21.991amu with 9.25 abundance and
Horizontally write the molecular orbital configuration for O2 2- , O2, and O2 -. Then state the bond order for each. Which of these compounds and ions are paramagentic and which are diamagnetic
calculate the work w when 0.7 litre of an ideal gas at an initial pressure of 4.2 atm is expanded or compressed
A 0.1036 g sample containing only BaCl2 and NaCl is dissolved in 50 mL of distilled water. Titration with 0.07916 M AgNO3 requires 19.46 mL to reach the endpoint. What is the % by wt. of NaCl in the sample
why do you suppose it is that you did an oxidation-reduction titrattgn to determine its concentration instead of an acid-base titration?
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