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A grad student made the news for all the WRONG reasons a few years ago when he synthesized a "nickel hydrazine perchlorate" compound (but didn't give any more detailed information) on a scale 1000 times larger than what his lab advisor told him to make (10g instaed of 0.010g) and ground it with a mortar and pestle (when the compound is explosive and shock-sensitive) and douced it with hexane (flammable solvent). The student lost a few fingers when the compound exploded. The likely formula for the compound is Ni(N2H4)2(ClO4)2, where the hydrazine is a neutral ligand and the nickle is +2. If 10g of this compound reacted completely into its component elements, how many liters of gas would be produced at 298K and 1atm? If you imagined the hydrazine decompostion and the nickel/perchlorate decomposition as seperate reactions, how much energy would be given off? (The heats of formation for hydrazine and nickel (II) are in your text; I had to estimate the heat for formation for perchlorate but assume it to be approx. 200kJ/mol). Show all work that got you to your answer.
Lidocaine is thought to bind to receptors in its methylated form. identify in writting the atoms or groups in the compound that could be involved in its binding to a receptor via- hydrogen bonding (1 example)
what mass of solid sodium formate (of mw 68.01) must be added to 105 ml of 0.55 mol/l formic acid(HCOOH) to make a buffer solution having a ph of 3.96? ka=0.00018 for HCOOH
Size of a hydrogen spherical balloon for lifting a payload, Determine the size of a spherical balloon filled with hydrogen at 30°C and atmospheric pressure for lifting 400Kg payload
A car travels at 58.0 miles per hour and gets 12.0 kilometers per liter of gasoline. How many gallons of gasoline are needed for a 1.50 hour trip?
A 75.0-mL volume of 0.200 NH3 is titrated with 0.500 M HNO3 . Calculate the pH after the addition of 19.0 mL of HNO3
As a result, the pressure inside the vessel drops to 30.64 atm at 25 C. Calculate the final percent by mass of ozone in the vessel.
Carbonated cola is more acidic than coffee or even orange juice because cola contains phosphoric acid.
Cyanogen is a gas which contains 46.2 % C and 53.8 % N by mass. At a temperature of 25oC and a pressure of 750 mmHg, 1.50 g of cyanogen occupies 0.714 L.
a solid block of exactly 100.0 cm has a mass of 153.6g. Determine its density. Will the block sink or float on water.
How many grams of cholesterol are in 230 mL of blood? The concentration of cholesterol (C_27H_46O) in blood is approximately 5.0mM.
What are the equilibrium partial pressure of H2 when equilibrium is reestablished following the addition of 0.200 mol of HI?
A 1.70-g sample of a large biomolecule was dissolved in 11.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C. Calculate the molar mass of the biomolecule.
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