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A 34.62 mL of 0.1510 M NaOH was needed to neutralize 50.0 mL of an H2SO4 solution. What is the concentration of the original sulfuric acid solution?
In an electrolysis experiment such as the one you will perform, 1.76 x 10^-3 moles of hydrogen gas were collected, and the metal electrode lost 0.1983 g. The equivalent mass of the metal is approximately what?
enzyme responsible for part of the signaling cascade that leads to replenishment of the stomach lining is inhibited by these drugs. How does it differ from the COX-2 enzyme responsible for inflammation?
What mass of this substance must evaporate to freeze 185g of water initially at 17 degrees Celsius? (The heat of fusion of water is 334J/g; the specific heat of water is 4.18 J/g-K.)
what is qvib at a temperature of 3100 K, keeping the zero point energy and referenced to v= 0? What is the vibrational contribution to CV, at the temperature 2600 K?
The solubility of N2 in blood at 37°C and at a partial pressure of 0.80 atm is 5.6 10-4 mol/L. A deep-sea diver breathes compressed air with the partial pressure of N2 equal to 3.6 atm.
Determine the mass of the liquids in grams if this liquid is added to the beaker the combined mass becomes 238.254 grams? Given that the mass of beaker=225.08 g?
A room contains 46 of air.How many kilowatt-hours of energy are necessary to heat the air in the house from 9 to 30? The heat capacity of air is 1.03.
What is the mol fraction Na2SO4 in a solution which is 11.5% by weight Na2SO4 (molar mass Na2SO4 = 142.06 g/mol and H2O = 18.016 g/mol)?
a solution of .64g adrenaline in 36.0 g of CCl4 elevates the boiling point by .49 degrees C. What is the molar mass of adrenaline.
Suppose that the microwave radiation has a wavelength of 13.2 cm. How many photons are required to heat 200. mL of coffee from 23°C to 62°C?
Determine the enthalpy change if The heat released when 24.9 grams of Potassium K reacts with excess H2O water is 124 kilo joules?
A mixture of KBr and NaBr weighing 0.560 gm was treated with aqueous Ag+ and all the bromide ion was recovered as 0.970 gm of pure AgBr. What was the fraction by weight of Kbr in the original sample?
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