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A 35.8-g sample of cadmium metal was melted by an electric heater providing 4.66 J/s of heat. If it took 6.92 min from the time the metal began to melt until it was completely melted, what is the heat of fusion per mole of cadmium?
A solution is prepared from 0.95 grams of H3PO4 ,(Phosphoric acid) and 1.15 grams of HClO4 (perchloric acid) in 150 mili litres of solution then determine how many millilite
If the coal is burned in teh DPH power plant that uses 2300 tons of coal per day, what is the daily production of calcium sulfite, if the conversion is 98%? if 50 pounds of
Problem- Carbon-14 is radioactive and decays by beta decay with a half-life of 5730 years. One gram of wood from a tree takes up an initial amount of 1.49 nanograms of carbo
Problem- A .10 M solution of socium cyanide gives a pH reading of 11.1. Write a net ionic equation that accounts for this pH and calculate the approximate concentrations of
A second student pours this volume into a graduated cylinder with divisions of 1 mL and reports the volume to be 72.2 mL. Are these two measurements consistent or contradict
A 10 g sample of acetic acid, HC2H3O2 was burned in a bomb calorimeter in an excess of oxygen. The temperature of the calorimeter rose from 25 degree C to 35.84 degree C
The standard enthalpy of formation of gaseous water is -241.82 kj/mol at 298 K. Estimate this value at 370 K. The molar heat capacities of hydrogen, oxygen, and gaseous wate
Both iodide ion and chloride ion are in the test solution. Describe the appearance of the contents of the test tube after drops of 0.01 M Agano3 have been added and the solu
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