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A 10 g sample of acetic acid, HC2H3O2 was burned in a bomb calorimeter in an excess of oxygen. The temperature of the calorimeter rose from 25 degree C to 35.84 degree C. If the heat capacity of the calorimeter and its contents is 13.43 kJ/(degree)C, what is the enthalpy change for the reaction
Draw the product that is formed when 1-pentyne is treated with an excess of hydrogen gas and a nickel catalyst
in the reaction below, 3.71 atm each of H2 and Br2 were placed into a 1.00 L flask and allowed to react: H2(g) + Br2(g) 2 HBr(g) Given that Kc = 84.1, calculate the equilibrium pressure of HBr.
A solution is prepared by adding 0.14 mole Na2HPO4 and 8.2 grams of NaH2PO4 to sufficient water to prepare a 1.00 L solution. What is the pH of the solution?
Consider two DNA molecules: one 400 base pairs long, the other 800 base pairs long. Assuming that each is a rigid rod of diameter 25 Å, with a length of 3.4 Å per base pai.
We wish to prepare a buffer of pH 10 using common laboratory reagents. How many mL of 6M HCl would we have to add to a solution prepared by adding 100 mL of 15M NH3 to 200 mL of water?
Glucose is approximately .10 % of human blood, by weight. Glucose has a formula weight of 180 g/mol. What is the conc of glucose in ppm
Calculate the volume of a 2.00 M KOH solution needed to neutralize 40.0 mL of a 0.600 M H2SO4 solution.
a sample of argon gas is at a pressure of 1.24 multiplied by 10^4kpa and a temperature of 24 degrees celcius in a rigid 25-L tank. how many moles of argon does the tank contain?
Suppose you were asked to carry out an aldol condensation reaction between benzaldehyde and 5-methylhexanal, modeled after the experiment you performed with benzaldehyde and acetone.
Using an unmanned rocket to visit the space station requires 85.2 trillion BTU of energy. The best fuel for the mission will have the highest ratio of energy to volume.
If 0.5110 g of H2C2O4 x 2H2O completely neutralized 41.39 mL of the stock NaOH soln what is the concentration of the NaOH solution?
At 25 °C, the equilibrium partial pressures for the following reaction were found to be PA = 1.40 atm, PB = 8.90 atm, PC = 5.10 atm, and PD = 2.50 atm.
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