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Calculate the concentration (M) of the following solutions prepared by; Diluting 5 mL of 0.100 M NaOH with water until the final volume is 100 mL. and dissolving 23.4 g of sodium sulfate (Na2SO4) in enough water to form 125 mL of solution.
Question- Sodium phosphate dodecahydrate , Na3PO4.12H2O, is a crystalline salt that is water soluble. Describe what is present in an aqueous solution of sodium phosphate dodecahydrate.
Assume in state A, V=4.00dm&3, p=1.00atm, t=300K, Va=10Vb, Pc/Pb=5 and Cp,m= 7/2R. Determine the change in entropy of the system and the surroundings for each step of the cycle.
What is the Kc for the following equilibrium CO2+H2=CO+H2O if CO=0.24M, H2O=0.38m, CO2=0.30M and H2O=3.3*10-2M
A 10.00 ml sample of 0.254 M H2SO4 is titrated with 0.385 M NaOH. What volume of the NaOH solution, in mL, is required?
calculate how much 95 ethyl alcohol will be required to dissolve0.1g of sulfanilamide at 78 degrees celsius and using
must be added to obtain iced tea at 11.5 C? The specific heat of the tea is 4.18 J/(g*C), and delta H for ice is +6.01 KJ/mol.
Find the stagnation pressure and temperature of air flowing at 100 f t/s if the temperature in the freestream is 60°F and the pressure is atmospheric.
Determine the value of pH of given solutions that are (a) a solution that is 0.40 M CH3CO2H, (b) a 0.40 M CH3CO2H solution, (c) 0.20 M NaCH3CO2. And explain your answer too?
A gas stream that contains 1.50 mole% CO2 flows through a pipeline. 20.0 kg/min of CO2 is injected into the line. A sample of the gas is drawn from a point in the line 10 meters downstream of the injection point and found to contain 2.3 mole% CO2.
A researcher wants to find the percentage of likely voters in a given state who will vote "yes" on an upcoming statewide ballot referendum. The population of the state is 3 million, and there are about 1.8 million likely voters. What population is..
Two 20.0-g ice cubes at -18.0 °C are placed into 295 g of water at 25.0 °C. Assuming no energy is transferred to or from the surroundings, calculate the final temperature of the water after all the ice melts.
At 0.0 degrees C, if the volume of air is 1.5 mL and the pressure of the atmosphere that day is 685 mmHg, what is the number of moles of air?
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