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105 cm3 of 2MSulphuric acid is required to neutralise 420 cm3 of potassium hydroxide. What is the concentration of potassium hydroxide?
Assume that the kinetic energy of a 1300 kg car moving at 105 km/h could be converted entirely into heat. What amount of water could be heated from 20.°C to 64°C by the car's energy?
Consider a 53.5 g sample of H2O(g) at 117°C. What phase or phases are present when 134 kJ of energy is removed from this sample.
Potassium hydrohen phthalate, KHC8H4O4, functions as monoprotic acid. If a 1.46 g sample of impure KHC8H4O4 requires 34.3 ml of 0.145 M NaOH
Calculate the number or calories of heat energy required for warming 34.6g of water from 18.9 celsius to 29.9 celsius
Determine which enantiomer of 2-iodo-3-phenylbutene gives the E product (2R, 3R or 2S, 3R), and explain clearly (using unambiguous diagrams) why that is the case.
Calculate the fraction of Fluorine atoms at 1000 K in each of the first three electronic levels based upon the following data
What is the osmotic pressure of human blood at 37°C if human blood is isotonic to 0.16 M NaCl solution? Remember that NaCl almost completely ionizes in water.
A testing facility found that 8.35*10^23 molecules of carbon dioxide were produced when a sample of octane was burned in air. If this combustion process is known to produce an 86.7% yield, how many grams of octane were in the sample?
Calculate the bicarbonate and carbonate alkalinities, in mg/L as CaCO3 , of a water having a total alkalinity of 233.0mg/L as CaCO3 and a ph of 10.47?
If the gas was not pure butane but 10 mole percent propane and 90 mole percent butane then determine how would the MW value be affected?
When relatively small amounts of magnesium burns, the fires are extinguished using commercially available dry powder. Why might this fire rekindle days later as someone tries to remove the residue with water?
What is the percentage yield of SO3 if 22.3 g SO3 are obtained from the reaction of 25.0 g SO2 with an excess of O2.
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