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Molar heat capacity of water in equilibrium with ice at constant pressure is A. 0 B. ? C. 1 D. none of these 12. If pH value of a solution is 8, then its pOH value will be A. 6 B. 1 C. 7 D. 10 13. The chemical nature of an element is independent of A. its atomic number. B. the number of protons or electrons present in it. C. the number of neutrons present in it. D. none of these.
What is the pH of an 85 mL solution containing .215 M NaHCO3 and .203 M Na2CO3?
When 54.01 g of Ba(NO3)2 is dissolved into a total volume of 3.23L of solution.
At room temperature (20), milk turns sour in about 65 hours. In a refrigerator at 3, milk can be stored three times as long before it sours. What is the activation energy of the reaction that causes the souring of milk?
A 36.4 L volume of methane gas is heated from 25 degrees celcius to 88 degrees celcius at constant pressure. What is the final volume of the gas?
The student is supposed to observe the bacterium and make a drawing. However, the student, having just learned about the Heisenberg uncertainty principle in physics class, complains that she cannot make the drawing.
Calculate the hydrogen Ion concentration, in moles per liter, for solutions with each of the following pH values.
the osmotic pressure of the solution at 25C is found to be 0.614 mbar. Calculate the molecular mass of immunoglobulin G.
For a reaction in which delta H= -360.1 kJ/mol and delta= - 90.0 J/K*mol, determine the temperature (in *C) below which the reaction is spontaneous.
What is the molarity of a solution of 12.0 g of NH4Br in enough H2O to make 240 mL of solution?Answer in units of M.
Using a sample that was dissolved in CH 2 Cl 2 , mixed alumina, evaporated the CH 2 C l2 , loaded and began to run his column, starting with C 6 H 14
The air we breathe is approximetly 20% oxygen. the reaction for the complete combustion of acetylene is 2C2H2 + 5O2 ------> 4CO2+ 2H2o
Calculate the apparent degree of dissociation of the NH4Cl if the freezing point of this solution is -15.3OC?(Molal freezing point constant =1.86 0C)
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