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When ethyl phenyl ketone was treated with 1 equiv of Br2/OH-, a rapid reaction ensued. Examination of the product mixture revealed that only about half of the starting material had been consumed and practically no PhCOCHBrCH3 was present. Explain these observations and draw the product that did form in the reaction.
How much heat is required to warm 231 g of ice from -46.9°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C?
the heat of vaporization of benzene, C6H6, is 30.8kJ/mol at its boiling point of 80.1C. How much heat is required to vaporize 102g benzene at its boiling point?
Determine the partial pressure of Ar, argon gas in the flask and A flask is filled with 1.20 of argon Ar gas at the temperature of twenty five degree Celsius.
A 4.10 g nugget of pure gold absorbed 287 J of heat. The initial temperature was 24.0°C. What was the final temperature?
Which of the following has the highest number of Calories?
the solubility of O2(g) in water is 4.43 mg O2/100 g H20 at 20 degree Celsius when the gas pressure is maintained at 1 atm. What is the molarity of the saturated solution?
When 0.228 g of the hydrate ZnSO4•xH2O is heated, 0.128 grams of anhydrous ZnSO4 remains. What is the value of x in the formula for the hydrate?
A 150 -g sample of water is cooled from 30 degrees C to 15 degrees C, thereby losing approximately 9420 J of heat. What is the change in E in J.
What is the pH of this buffer after 0.45 mL of 10.0 M hydrochloric acid are added to it? The Ka for HF is 6.8 x 10-4.
A gaseous mixture of rm O_2 and rm N_2 contains 36.8 % nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 485 mmHg?
The balloon rises to an altitude of 20,000 m, where atmospheric pressure is 55 mmHg and the temperature is 210 K. What is the volume of the balloon at 20,000m?
If you want to remove 50% of the moisture in the air at a constant pressure of 100 kPa, to what temperature should you cool the air.
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