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1.) A 0.5-L unbuffered solution needs the pH adjusted from 6.8 to 3. How many microliters of a 6 molar HCl solution need to be added to adjust the pH?
2.) After reacting the nitrate with cadmium to produce nitrite, the nitrite is then reacting with sulfanilamide and N-(1-naphthyl)-ethylenediamine, to produce a purple dye molecule that can be quantified on a spectrophotometer.
The N-(1-naphthyl)-ethylenediamine, called NNED for convenience, reagent is made by mixing 1 gram of NNED in 1 liter of water. However, we don't always want to make an entire liter of solution because the NNED solution only lasts about 1 month before going bad and turning brown.
How many milligrams of NNED will need to be added to make 150 milliliters of solution?
When 2.00 kgmoles of KClO3 are heated, 2.00 kgmoles of KCl and 3.00 kgmoles of O2 are produced. If 50.0 kg of KClO3 are heated, how many kg of KCl and O2 are produced?
An unknown compound contains only carbon, hydrogen, and oxygen (). Combustion of 4.00 of this compound produced 5.87 of carbon dioxide and 2.40 of water.
An element X forms an iodide (XI3) and a chloride (XCI3). THe iodide is quantitatively converted to the chloride when it is heated in a stream of chlorine: 2 XI3 + 3 CI2 -----> 2 XCI3 + 3 I2. If 0.5000 g of XI3 is treated, 0.2360 g XCI3 is obtaind..
Does anyone know the balanced equation piperonaldehyde (C8H6O3)+ acetophenone (C8H8O)= 3,4-methylenedioxychalcone(C16H12O3)
mno2 s4hclgmncl2aqcl2g 2h2o g20.0 grams of each reactant are placed in a vessel and allowedto react. calculate the
Consider a mixture of potassium chloride and potassium nitrate that is 43.2% potassium by mass. What is the percent KCL by mass of the original mixture?
Explain what is the concentration of HF if 24.21mL of 0.1009 M NaOH are needed to neutralize 25.00mL of HF
one way to reduce the formation of acid rain involves trapping the so2 by passing smokestack gases through a spray of
What mass of O2 is required for the complete combustion of 68.9 g of pentane, C5H12, to CO2 and H2O?
If all of the energy from the beta decay of the 14C in a 6000 kg African Bush Elephant could be captured and converted into electrical energy
heating oil is circulated in a circular conduitat an average velocity of 0.30 ms. the diameter of the conduit is25 cm.
Write balanced equations for the reactions pf phenylmagnesium bromide and trityl fluoborate with water
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