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In a constant-pressure calorimeter 70.0mL of 0.310 M Ba(OH)2 was added to 70.0mL of 0.620 M HCl. The reaction makes the temperature of the solution to increase from 24.04 °C to 28.26 °C. If the solution has the same density as well as specific heat as water, define what is PH for this reaction per mole of H2O produced? Presume that the total volume is the sum of the individual volumes.
A scientist has a sample of gas that was collected several days earlier. The sample has a volume of 392 cm3 at a pressure of 0.987 atm and a temperature of 21°C.
A sprinter set a high school record in track and field, running 200.0 m in 21.6 s. What is the average speed of the sprinter in kilometers per hour
Because eugenol is insoluble in water, both eugenol and water co-distill in a process called steam distillation. In steam distillation, the boiling point of the distillate is below the boiling point of either component.
Further studies will refine how much water is needed for endangered species protection. States hope it will be the 130-150 KAF initially agreed upon rather than the 415 KAF the FWS thinks it is. What happen if cooperative agreement fails?
KCN is dissolved in water in a calorimeter that has a total heat capacity of 2.294 kJ·K-1, the temperature decreases by 0.470 K. Calculate the molar heat of solution of KCN.
Draw the resonance structures for 9-(hydroxymethyl)anthracene. Is it possible for all three rings to simultaneously have benzenoid character
You conduct an experiment where N2 is collected over water in a 2.12 L flask at 23.oC. At the conclusion of the experiment, the total pressure in the flask is 652. torr. What is the pressure of N2 in the flask?
Difluoromethane gas (CHF2) was placed in a 5.0 litre cylinder at 1.3 bar at 25 C. What is the mass of CHF2
Suppose you are given a 2.75 g sample of the orginal mixture. You isolated the pure metal from the other components and determined that the mass of the metal was 1.25 g. What is the percent by weight of the metal in the orginal sample
A chemist wanted to determine the concentration of a solution of lactic acid, HC3H5O3. She found that the pH of the solution was 2.59. What was the concentration of the solution.
A certain solvent has a normal freezing point of 1.72 ° C, and a freezing point depression constant of 5.07 ° C/m. What is the molality of a solution in
Determine the flow is turbulent or streamline when the inside pipe diameter is 2.0 inches and the absolute viscosity of the fluid
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