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The forensic technician at a crime scene has just prepared a luminol stock solution by adding 10.0 g of luminol to H2O creating a solution with a total volume of 75.0 mL.
What is the molarity of the stock solution of luminol?
Calculate the molecule weight of the liquid If 2.31grams of the vapor of a volatile liquid is able to fill a 498-ml flask at temperature of 100 degree Celsius and pressure of 775 mm Hg? also determine the density of the vapor under these conditi..
When 28.6 kg of Fe2O3 react with 17.2 kg of CO and 6.3 kg of Fe are recovered, what is the percent yield for the reaction?
calculate the theoretical yield of TiO2. If the percent yield of the reaction is 77.6%, how many grams of TiO 2 are actually formed?
mass of magnesium = .021 grams initial volume = 50.00 mL final volume = 25.6 volume of liquid displaced = 24.4 volume of hydrogen gas produced = 24.4?
If the diameter of a sodium atom is 3.14×10-8 , how many sodium atoms would fit along a line exactly 2.00 inch long?
Aluminum has chemical propertied that are similar to magnesium. What observation might you expect with the addition of 6M HCl to an aluminum strip
The heat of fusion of thallium is 21 j/g, and its heat of vaporation is 795j/g. The melting anf boiling points are 304 degress celcius. The specific heat of liquid thallium is 0.13 j/g*c.
How many different types of resonance structures can be drawn for the ion SO32.
When dissolved in your stomach (pH=1) the concentration of aspirin (acetylsalicylic acid Ka = 3.0 x 10 ^-4) is 0.2 M. Calculate the % ionization of the aspirin.
All of the potassium reacted to produce bubbles of hydrogen gas, which, because of the extraordinary care that was taken, did not ignite. How much hydrogen gas was produced, in units of moles?
How many grams of potassium chlorate decompose to form potassium chloride and 450. mL O2 at 128°C and 750. torr?
How many moles of S8 are needed to make 0.600 moles of SF4? S8 + 8 Cl2 = 8 SCl2 ; 3 SCl2 + 4 NaF = SF4 + S2Cl2 + 4 NaCl
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