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Use the following net ionic equation to write a condensed equation. Assume that the nitrate anion and potassium cation are present in solution. Ni2+(aq) + CrO42-(aq) yeilds NiCrO4(s)
Write the reaction between ferric chloride and lime slurry that results in precipitation of Fe(OH)3. For a dosage of 40 mg/l FeCl3: What is the required stoichiometric addition of lime expressed as CaO?
A compound is constituted by mass of 22.6% phosphorus, the rest being chlorine. Given that a volume of 307 mL of the gas has a mass of 1.55 g at 25 °C and 90 kPa, find the molecular formula for this compound
If I want to make the buffer by adding 0.100 M NaOH instead of sodium acetate, how many milliliters of NaOH are needed to reach pH=4.74?
How many grams of cobalt metal can be formed if a 2.00 amp current is passed through a solution of Co2+ for a period of 20.0 minutes
A baby with a severe bronchial infection is in respiratory distress. The anethetist administers heliox a mixture of helium and oxygen with 92.3 % by mass O2. What is the partial pressure of oxygen being administered to a baby if atnospheric pressu..
A wedge-shaped tank is filled with water at a rate of 5.00 kg/s. The tank is 4.00 m long and 4.0 m tall, and the angle of the wedge is 90°. The wedge is oriented as pictured, with the point down such that cross sectional area changes with height
Calculate the change in internal energy of the gas in each case of these processes.
Unknown compound A (C8H12) is reacted with H2 (excess) in the presence of a palladium catalyst forming compound B (C8H16). In addition when compound A is reacted with O3 followed by zinc and acetic acid the following two compounds are formed
A galvanic (voltaic) cell consists of an electrode composed of chromium in a 1.0M Chromium(II) ion solution and another electrode composed of silver in a 1.0M silver ion solution, connected by a salt bridge.
a solution of ammonia and water contains 3.30times1025 water molecules and 7.00times1024 ammonia molecules. how many
Which of the following processes are exothermic. the formation of NaBr from its constituent elements in their standard state the breaking the bond of I2 the sublimation of Li the second ionization energy of Mg None of the above are exothermic
A 25-g sample of an alloy at 92 degrees celsius is placed in 50 grams of water at 20 degrees celsius. If the final temperature reached by the alloy sample and water is 27 degrees celsius.
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