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At 0.0C, if the volume of air is 1.8 mL and the pressure of the atmosphere that day is 665 mmHg, what is the number of moles of air?
A solution is prepared by mixing 75.0 mL of 5.00 M HCl and 40.0 mL of 8.00 M HNO3. Water is then added until the final volume is 1.00 L. Calculate [H+], [OH -], and the pH for this solution.
a termolecular reaction is carried out involving only two reactants, A and B, where two molecules of A are involved for each molecule of B. When the concentration of A is 0.415 M
How much air is required in one hour to completely react all of the galena? Air is 21% oxygen. C. Assuming the exit temperature of the flue gas is 650 ºC and the barometric pressure is 0.9 atm, what is the volume of the sulfur dioxide produced?
In a laboratory experiment, students synthesized a new compound and found that when 14.10 grams of the compound were dissolved in 208.0 grams of ethanol, the solution began to boil at 78.9510C
A star is 3.28 x 1014 km from Earth. How many days does it take for light to travel from the star to Earth?
a sample contains both KBr and KI in the unknown quantities. If the sample has a total mass of 5.00g and contains 1.51g K, what are the percentages of KBr and KI in the sample by mass?
Calculate the mass of urea that should be dissolved in 225 g of water at 35°C to produce a solution with a vapor pressure of 37.1 mmHg.
Calculate the concentrations of all species in a 1.66 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1=1.4x10^-2 and Ka2=6.3x10^-8.
A solution of ammonia and water contains 3.20×10^25 water molecules and 8.10×10^24 ammonia molecules. How many total hydrogen atoms are in this solution?
Describe in brief the risk connected with solutions of 1M NH 3 , 1M HCl, and 1M NaOH?
Find out the amount of energy released by this process of fission of a single U 235 atom and expree your answer in joules?
If the activation energy for a given compound is found to be 42.0 kJ/mol, with a frequency factor of 8.0 × 1010 s-1, what is the rate constant for this reaction at 298 K?
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