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The average density of solids near the surface of the earth is p =4x10-3. On the assumption of a spherical planet of uniform density p, compute the gravitational constant G.
while out testing stream water quality in a local fresh water creek you measure the dissolved oxygen concentration to
The following half-reactions occur in the mercury battery used in calculators. If E°cell = 1.357 V, calculate the equilibrium constant for the cell reaction at 25°C.
While doing sn2chemistry- synthesis of 1-bromobutane from butan-1-ol, why would the crude product likely contain organic impurities as well as why would you dry the 1-bromobutane before distillation
determinenbsp the molarity of a solution of sodium hydroxidenbsp naoh if 27.9 ml of this solution combines exactly with
a cylinder measuring 3.4 cm wide and 4.0 cm high is filled with gas. The piston is pushed down with a steady force measured to be 275 kpa
A cup of brewed coffee is made with 9.0 grams of ground coffee beans. If a student drinks four cups of gourmet coffee a day, how much does the student spend on a year's supply of gourmet coffee that sells for $8.99 a pound
What is the molarity of an aqueous solution containing 75.3 g of glucose (C6H12O6, mol wt = 180 g/mole) in 35.5 mL of solution
Caculate the pH of a solution that has 40.00 mL of 0.0900 M NH3 and 0.1000 M HCl is being added at a volume of 35.95 mL
At room temperature 22.0 C the vapor pressure of benzene is 0.302 atm and the vapor pressure of hexane is 0.374 atm. What is the total vapor pressure at room temperature for a 2:1 mixture of hexane to benzene
What volume of fuel should you bring? Assume each of the following: the fuel has an average formula of C7H16; 15% of the heat generated from combustion goes to heat the water
1-When 30.5 mL of 0.565 M H2SO4 is added to 30.5 mL of 1.13 M KOH in a coffee-cup calorimeter at 23.50°C, the temperature rises to 30.17°C. Calculate H of this reaction per mole of H2SO4 and KOH reacted.
What is the molarity of a solution when 38.8g of potassium chromate (K2CrO4 ) is dissolved in enough water to make 3 liters of solution
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