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A student titrated 20.0 mL of an HCl solution with a standardized 0.2000 M NaOH solution. The volume of NaOH added at the equivalence point was 5.15 mL. Calculate the concentration of the HCl solution
14.0 moles of gas are in a 6.00 L tank at 22.6 C. Calculate the difference in pressure between methane and an ideal gas under these conditions.
At a certain temperature, a volume of 100 mL of saturated barium carbonate solution contains 0.00216 g of BaCO3 (MW=197.3 g/mol).
You have 50 mL of 0.010 fully protonated histidine. how many milimoles of base must be added to bring histidine solution to pH equivalent to the pI of histidine.
Calculate how many milliliters of carbon dioxide would be produced theoretically from 20g of sucrose at 25 degrees Celsius and 1 atomosphere pressure.
The solubility of O2 (g), in water at 25°C is 3.16 mL/100 g H2O when the gas pressure is maintained at 1 atm. What pressure of O2 (g) would be required to produce a saturated solution containing 10.9 mL/100 g H2O?
A 75 kg person drinks 550 g of milk, which has a "caloric" value of approximately 3.0 kJ/g. If only 20% of the energy in milk is converted to mechanical work, how high (in meters) can the person climb based on this energy intake?
The insecticide DDT has a half-life in the human body of about 7 years. That is, in 7 years its concentration.( Although DDT is no longer in use in the United States).
if molarity of a 2000ml solution is 4.0M NaCl, how many moles of NaCl are dissolved in that solution.
magnesium sulphate MgSO4 has an observed osmotic pressure =7.6 atm at the temperature of twenty five degree celsius. Determine the observed van't Hoff factor?
A proton in a linear accelerator has a de Broglie wavelength of 127 pm. what is the speed of the proton?
A container with a volume of 101 L contains how many atoms of argon gas at STP?
Which instrument can be used to determine the total calcium in a small blood sample.suggest a second method suitable for determine the free calcium ions on a similar sample of bood.
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