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The 12.5 ml of a 20X stock solution. Explain what volume of water would you add to this to give a solution with a final concentration of 2X?
The pressure of 6.0 L of an ideal gas in a flexible container is decreased to one-eighth of its original pressure, and its absolute temperature is decreased to one-fourth of the original. What is the final volume of the gas?
Indicate how each of the following errors will affect the calculated molarity of acetic acid.(high,low or no effect) and explain why. 1) The actual molarity of the NaOH was .2000M rather than .3000M
What experimental difficulty would you encounter if you had neglected to include a drying step before evaporation
When 76.0 grams of calcium and 36.9 grams of nitrogen gas undergo a reaction that has a 90.0% yield what mass of calcium nitride is formed?
1. the absorbance of an iron thiocyanate solution containing0.00500 mg feml was reported as 0.4900 at 540 nm.a
Explain how many mL of a 2M solution of boric acid must be added to 600mL of a solution of 0.01 M sodium borate in order to bring the pH to9.45 (pKa boric acid: 9.24)
Include drawings of each of the three ph cases for phenylalanine, and be certain to include the appropriate locations of charge on your molecular structure.
Whats the reduced mass of CO2. I know how to do it for CO but since its 3 molecules do you go m1+m2+m3/m1m2m3 or is m2 just 32
When white phosphorous (P4) is heated above 1100 K, the following equilibrium is observed in the gas phase P4 ? 2P2 b. The equilibrium constant has been measured as a function of temperature for this reaction
Describe how you can use titration to determine the molar mass of an unknown acid, by giving a specific example and showing a sample calculation.
The average per month of energy use is 879 kWh (kilowatt) of electricity. If the price of one kWh is $0.0668 how much money will spend on electricity for one year?
You are asked to prepare 150 mL of a 0.059 M solution of silver nitrate. How many grams of silver nitrate do you need to weigh out.
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