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At 25 °C, the vapor pressure of acetone is 230 mmHg and the vapor pressure of toluene is 284.5 mmHg. What is the total vapor pressure at 25 °C above an equimolar mixture of these two miscible liquids?
A sample of sodium reacts completely with 0.568kg of chlorine, forming 936g of sodium chloride. What mass of sodium reacted.
the mass of component A is 2.47 g, component B is 1.12 g, and component C is 0.654 g; what is the percent composition of component A?
An equilibrium mixture of SO2, SO3 and O2 gases is maintained in a 11.5 L flask at a temperature at which Kc = 55.2 for the reaction shown below.
The blood buffer system is made up of H2CO3 and HCO3. Describe with the use of equations how this system responds to added H3O and to added OH.
If the measured cell potential is 0.9000 V at 25 °C and the standard reduction potential of the Ag /Ag half-reaction couple is 0.80 V, calculate the hydrogen ion concentration in the anode compartment.
A diprotic acid, H2A, has the following ionization constants: Ka1 = 1.1 multiplied by 10-3 and Ka2 = 2.5 multiplied by 10-6. In order to make up a buffer solution of pH 5.80, which combination would you choose, NaHA/H2A or Na2A/NaHA?
Utilize the atomic radius (70 pm) and density of neon at 25 C and 1 atm (.90 g/mL) to Compute the average density of a neon atom
Carbon-14 is a radioactive nucleus with a half-life of 5760 years. Living matter exchanges carbon with its surrounding (for example, through CO2) so that a constant level of 14C is maintained, corresponding to 15.3 decay events per minute
A sample of C2H2 contains 3.02 moles of C (12.0 g/mol). How many moles of C2H2 (26.04 g/mol) are present
A volume of 60.0 mL of aqueous potassium hydroxide (KOH) was titrated against a standard solution of sulfuric acid (H2SO4)What was the molarity of the KOH solution
A student is conductiong this experiment, but forgets to temper the lid. therefore it breaks while the hydrate is being heated. the student thinks carefully and replaces the old lid with a new one, collecting the following data. what is the percen..
If you have 330 ml of water at 25 degrees and add 110 ml of water at 95 degrees, What is the final temperature of the mixture.
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