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If 35.0 g H2O at 22.7 °C is combined with 65.0 g H2O at 87.5 °C, what is the final temperature of the mixture? The specific heat capacity of water is 4.184 J/g×K.
Caculate the kinetic energy of a mole of oxygen atoms, all moving at a speed of 400 m/s (10000 mph).
Equal numbers of moles of toluene and benzene are mixed and form an ideal solution. Compute the mole fraction of benzene in the vapor in equilibrium swith this solution.
a student measured 50.0 ml of a salt water solution (density=1.021 g/ml) into a flask. The Cl minus in the measured sample required 16.67 ml of 1.0466 M AgNO3 solution to reach the end point.
What is the final pH when 100 ml of 0.1 M HCl is added to 150 ml of 0.2 M dihydrogen phosphate
If you dissolve 4 aspirin tablets in a 340mL glass of water, what is the pH of the solution and the percent dissociation?
write a complete ionic equation and if there is a phase change you need to then write a net ionic equation and list the spectator ions copper (ii) sulfate plus silver nitrate equals copper (ii) nitrate and silver sulfate
What is the equivalence volume, Ve, in milliliters? Calculate the concentration of Ca2 at V = 1/2 Ve?
In a synthesis experiment you obtain a sample of product on which you do a melting point determination and find a melting point range of 108.0 to 114.3 degrees Celsius. The sample is supposed to be benzoic acid.
For the reaction: 2NO(g)+2H2(g)-->2H2O(g) at equilibrium in a 4.0L container at 25oC. Suppose 2.5 mol of each component initally is put into the container. At equilibrium 2.5 mol of NO is present. What is Kc for the reaction at the temperature?
A student in lab constructed an Ag+ sensor using the same procedure as in the Metal Ion Sensor lab that you performed. Titration of 10.00 mL of an AgNO3 solution diluted with 40.0 mL of DI water required 11.85 mL
How many moles of NaOH must be added to 1.0 L of 1.2 M HC2H3O2 to produce a solution buffered at each pH. a) pH=3.87 b) pH=5.24
Calculate the volume of 1.0 x 10-4 M CV+ solution that needs to be added to a 25.0 mL volumetric flask and diluted with deionized (DI)
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