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A 40.85 mL sample of a 0.200 M solution of barium nitrate is mixed with 11.33 mL of a 0.250 M solution of potassium sulfate. Assuming that all ionic species are completely dissociated, what is the osmotic pressure of the mixture in torr?
What properties of soil and its components could be measured to determine whether two soil samples are consistent with having a common origin?
Explain Solid State Chemistry, 1) Write the balanced chemical equation for Fe2O3+2Al?2Fe+Al2O3 using the lowest possible whole number coefficients.
Perkin and related reactions, There are numerous condensations that are closely related to the Perkin reaction
How much heat (in kJ) is evolved in converting 1.20 mol of steam at 134.0°C to ice at -55.0°C.
A 26.1 g sample of pure iron at 77°C is dropped into 93 g of water at 17°C. What is the final temperature of the water-iron mixture.
a mass of 48.5 g of a certain substanse can be disolved in 29.1 cm3 of water at 20 degrees celcius. Calculate the solubility of this substance per gram of water at the same temperature.
acetic acid has a Ka value of 1.8x10^-5. How many grams of NaC2H3O2 would have to be added to 100 ml of .1 M HC2H3O2 to prepare a buffer with a pH of 4.5?
Why does the absolute refractory period occur and What is happening in the cell.
Liquid carbon disulfide burns in oxygen to form carbon dioxide and sulfur dioxide gases. Calculate the number of oxygen molecules it would take to consume 500 molecules of carbon disulfide
Liquid-in-glass thermometer are of two types:mercury in glass and alcohol plus red dye in glass. the dependence of volume on temperature of mercury and alcohol.
A unknown liquid is insoluble in water and soluble in cyclohexane and alcohol with a boiling point of 110 C What is the substance?
A 0.4780-g sample of impure Ca(OH)2 is dissolved in enough water to make 57.00 mL of solution. 20.00 mL of the resulting solution is then titrated with 0.1140-M HCl.
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