How many moles of sodium hypobromite added to form a buffer
How many moles of sodium hypobromite ({rm NaBrO}) should be added to 1.00 {rm L} of 5.0×10-2 M hypobromous acid ({rm HBrO}) to form a buffer solution of pH = 9.14? Assume that no volume change occurs when the {rm NaBrO} is added.
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Acid precipitation is the term generally used to describe rain or snow that is more acidic than normal. One cause of acid precipitation is the formation of sulfuric and nitric acids from various sulfur and nitrgoren oxides produced in volcanic eru
A 34.9-g sample of an unknown metal, initially at 232.8oC, is immersed in a 17.0-g sample of water (specific heat = 4.184 J g-1 oC-1), initially at 15.4oC, in an insulated cup. Once equilibrium is reached, the final temperature of the water-metal
The temperature rose by 0.910K. In a separate experiment in the same calorimeter, the combustion of 0.825g of benzoic acid, for which the internal energy of combustion is -3251kJ mol-1, gave a temperature rise of 1.940K. Calculate the internal ene
An 8-kg plunger is released from rest in the position shown and is stopped by two nested springs; the constant of the outer spring is k1 = 4 kN/m and the constant of the inner spring is k2 = 12 kN/m.
How many moles of sodium hypobromite ({rm NaBrO}) should be added to 1.00 {rm L} of 5.0×10-2 M hypobromous acid ({rm HBrO}) to form a buffer solution of pH = 9.14?
A flask contains 22.5 g of an unknown liquid, initially at 14.0oC. After 2.34 kJ of heat are added to the liquid, its final temperature is 56.3oC. What is the specific heat of the liquid?
The snowmobile is traveling at speed v0 when it leaves the embankment at A. Determine the time of flight from A to B and the range R of the trajectory.
An unknown compound has the empirical formula CH2. A 0.050-mol sample of this compound weighs 4.20 g. What is the molecular formula of this compound?
Oxygen gas is generated by the thermal decomposition of potassium perchlorate. the oxygen gas is captured by water displacement at a water temperature of 20 degrees C resulting in a water vapor pressure of 0.0231 atm. if the pressure inside of the
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