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15.00 mL of .8000 mol/L solution of diprotic acid is mixed with 30.00mL of .6000 mol/L NaOH inside a coffee cup calorimeter. The initial temperature of the acid was 22.1 degrees Celsius and the initial temperature of the base was 22.1 degrees Celsius. after mixing, the temperature was 27.8 degrees Celsius. the density of the solution is assumed to be .998 g/mL.
What is q of surroundings for this reaction?
A 5.00 mL sample of barium hydroxide is titrated to the phenolphthalein endpoint using hydrocholoric acid. the five mL sample requires 18.02 M HCL solution to reach the endpoint. What is the concentration of the Ba(OH)2 solution
an oxide of copper is decomposed forming copper metal and oxygen gas. a 0.500 g sample of this oxide is decomposed
for the reaction 2a b --gt 2c if b is initially 4.0m and 2min later is 3.0m what is the rate of appearance of
An electrochemical cell is constructed by coupling a Cu(II)/Cuhalf-cell with an Ag(I)/Ag half cell. The concentration of Cu(II)and Ag(I) are both 0.010 M. The observed potential
It required 16ml of a sodium hydroxide solution titrated against a standard solution of 0.79g of potassium hydrogen phthalate in water to reach equivalence point. What is the molarity of the sodium hydroxide?
A rock sample contains traces of 238U, 235U, 232Th, 208Pb, 207Pb, and 206Pb. Careful analysis shows that the ratio of the amount of 238U to 206Pb is 1.164
vinger contains 5.0 g of acetic acid, CH3COOH,in 100.0 mL of solution. Calculate the molarity of acetic acid vinegar?
What are the odds of finding a particle in a one dimensional box between 0 and L/2, that is L is the length of the box. Assume that the particle is in the second to lowest energy level (n = 2).
databases are an excellent tool for effectively using customer relationship marketing crm but there are three problems
The reaction A=B+ C is second order in A. when [A}0=0.100M, the reaction is 20% complete in 35 minutes. Calculate the value of the rate constant in ( L/min.mol)
A sample of 88.0 g CO2 is held at 291 K in a 50.0 L container. What is the pressure this gas exerts on the container. Express your answer in kPa. Enter only a numerical value
The vapor pressure of water at 20.0°C is 17.5mmHg . If the pressure of a gas collected over water was measured to be 453.0mmHg . What is the pressure of the pure gas
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