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the temperature of a metal bar rises by 15 C when it absorbs 4.26 kJ of heat. The mass of the bar is 472g. Determine the specific heat of the metal bar.
What is the theoretical yield of bismuth when 393 g of Bi2O3 reacts with excess carbon as shown below? Bi2O3 + C(s) => Bi(s) + CO(g) (not balanced)
How many kJ of energy are required to convert 258 grams of ice at 0°C to water (liquid) at 42.1°C? The following information is given for H2O.
Would it be a good idea for a person to take a couple of aspirin tablets before attending a cocktail party? Explain your reasoning. This needs to be from a chemistry stand point.
Detremine the concentration of chromate solution - Potassium chromate has an absorbance value
In the purification process, the organic layer is washed sequentially with 2 M NaOH, water, and saturated aqueous sodium chloride. What is the purpose of each of these washes and why is cold 2 M NaOH recommended?
suppose a student attempts to do an ion exchange on a column that is already nearly saturated with CO2+ and Zn2+.
a 100 g sample of water at 23C is added to a 45 g sample of water at 99C. what is the final temperature of the sample
Calculate the solubility of Ba(IO3)2 in 0.033 M solution of Mg(IO3)2 considering both the electolyte and common ion effects. Ba(IO3)2 Ksp
Use Henderson Hassalbalch equation to calculate how much HCl must be added to a liter of buffer that is 1.5 M in acetic acid and 0.75M in sodium acetate to result in a buffer pH of 4.10? Ka = 1.8 x 10-5
how many grams of sucrose C12H22O11 must be added to 522g of water to give a solution a vapor pressure 2.0mmHg less than that of pure water at 20 degrees celsius
What mass of copper would be produced by the reduction of copper(II) ions during passage of 1 ampere of current through a solution of copper(II) sulfate for 51 minutes?
During the discharge of an alkaline battery, 4.90of Zn are consumed at the anode of the battery. What mass of MnO2 is reduced at the cathode during this discharge?
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