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a) Given that the molar mass of H3PO4 is 97.994 grams, find out the number of grams of H3PO4 needed to prepare 1.20 L of a 0.8 M H3PO4 solution.
b) Explain what volume in liters of a 0.8 M H3PO4 solution can be prepared by diluting 50 ml of a 3.5 M H3PO4 solution?
The solubility of N2 in blood at 37°C and at a partial pressure of 0.80 atm is 5.6 10-4 mol/L. A deep-sea diver breathes compressed air with the partial pressure of N2 equal to 3.6 atm. Assume that the total volume of blood in the body is 5.0 L. C..
A student determined the Kf (f as lower subscript) of t-butyl alcohol using tap water instead of distilled or deionized water. Describe the problems that might have been encountered. How would these problems affect the magnitude of Kf?
The heat of combustion of bituminous coal is 2.5 × 104 J/g. What quantity of the coal is required to produce the energy to convert 100. lb of ice at 0°C to steam at 100°C
Compute the work associated with the expansion of a gas from 152 L to 189 L at a constant pressure of 14atm.
The half reactions for CCl4 and Fe are: CCl4(aq) + 1/2H+ + e- = 1/2CHCl3 + 1/2Cl- E0 = 0.67 Volts Fe3+ + e- = Fe2+ E0 = 0.771 Volts Could a microorganism gain any energy from an overall reaction in which it reduced CCl4 with dissolved Fe2+ as a re..
What is the density of gold if a ring with a volume of 2.656 cubic centimeters has a mass of 51.26 grams?
The solubility of oxygen in water is 5.00M when the partial pressure of oxygen is 1.00 atm. Calculate the solubility of oxygen in water in contact with air
In one episode of the 1960s television sitcom, Gilligan's Island, the famous professor constructed voltaic cells to use as substitues for their radio's dead batteries.
What is the pressure inside a system when the system-side column in an open mercury manometer is 75.0 mm lower than the atmosphere side when the atmospheric pressure is 735 mm Hg?
A particular reaction is spontaneous at 450K. The enthalpy change for the reaction is 34.5 kJ. What can you conclude about the sign and magnitude of the standard entropy change for the reaction
a sample of nitrogren gas is collected in a 100 mL container at a pressure of 688 mm Hg and a temperature of 565 degrees C. how many grams of nitrogen gas are present in gas sample?
The enthalpy of solution for a solid with approximately equal delta h values for each of the steps involved in the solution formation process is
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