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What would happen to the pressure inside the container if you decrease the temperature to one fourth the original temperature while holding the volume and number of moles constant? What is the partial pressure (atm) of O2 in the system described in the previous two problems?
How much of a 6.0 M sucrose solution should be used to make 79.0 mL of a 0.055 M solution.
oxygen are required to react with 5.62 mol nitrogen to produce dinitrogen trioxide?
A sample of nitrogen gas had a volume of 500. mL, a pressure in its closed container of 740.0 torr and a temperature of 25.0°C.
A 500ml Buffer solutin is 0.150 M in HNO2 and 0.175 M in KNO2. The Ka for HNO2 is 4.6*10^-4. What is the inital pH of this buffer. What is the pH of the buffer in the question above if 0.0049 moles of HCl are added assuming no change in volume
Volume in liters of 0.625 M manganese(II) sulfate that contains 92.4 g of solute. (Do not enter the units of your answer). Calculate to 2 decimal places and do not include units.
How many moles of hydrofluoric acid (ka=6.8e-4) must be added to 500 ml of .10M sodium fluoride to give a buffer of pH 3.20
A large pond is 300m by 95m with an average depth of 2.5m. Assuming that the pond is saturated with oxygen, calculate the amount of sugar (C12H22O11) in kg that would be sufficient to completely consume the dissolved oxygen.
Carbon-14 decays by beta emission with a half life of 5,730 years. Assuming a particular object originally contained 6.5 micro grams of C-14 and now contains 0.76 micro grams of C-14, how old is the object
A solution contains Cr3+ ion and Mg2+ ion. The addition of 1.00 L of 1.55M NaF solution is required to cause the complete precipitation of these ions as CrF3(s) and MgF2(s). The total mass of the precipitate is 50.2g.
consider a 0.0500m HClO2 is a moderately weak electrolyte acid such that 36% of the molecules dissociate when dissolved in water. calculate the van't hoff factor
How much heat is evolved in converting 1.00 mol of steam at 130.0 C to ice at -50.0 C? The heat capacity of steam is 2.01 J/g*C and of ice is 2.09 J/g*C.
what is the actual yeid of bromobutane with the area of 750 and a theriotical of 100%
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