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It was determined In a calorimetry experiment, that a piece of copper metal of 92.0 gram released 1860 Joules of heat to the surrounding H2O in the calorimeter (qcopper = -1860 J). what was the initial temperature of the Cu metal If the final temperature of the Cu-H2O mixture was at twenty five degree celsius? (The specific heat of copper = 0.377 J/(g°C).)
Find the temperature and the pressure of a gas inside the cylinder - what was the initial pressure of the gas in the cylinder?
Calculate the number of 5.70m NaOH must be added to 666 ml of a buffer that contains .0205m C2H4O2 and .0260m C2H3NaO2 to increase the ph to 5.75.
Determine how will this error control the final computed percentage of CH3COOH in the vinegar
For alloys of two hypothetical metals A and B. Find out composition of phase boundary (or solubility limit) for both and phases at this temperature.
Determine the percent by mass of calcium carbonate in the sample
Compute the pH if NaOH solution of the 10.00 mL has been mixed. pKa of HCOOH = 3.74
4.00g of H2SO4 solution was diluted with H2O and added with excess of cacl2, and The washed and dried precipitate of BaSO4 weighted 4.08g. Calculate percent H2SO4 in the original acid solution.
Calculate the equilibrium constant for the reaction - flask at a certain temperature according to the reaction
The valve between these Tanks X and Y is opened and the gases are permissible to mix. After the gases have had time to mix, calculate the partial pressure of the oxygen gas?
Acetic acid flowing at the rate of 20kg pe min. Product p is of combination leaves at rate of 100 kg per minute. Determine the composition of p?
What is methanol's vapor pressure It boils at 65.0 °C and has a heat of vaporization ΔHvap = 37.4 kJ/mol. at 22.0 °C?
Multiple choice questions in Nuclear reactions - make nuclear fission more efficient, which device is used in a nuclear reactor to slow the speed
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