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Kr (g) in a 18.5 L cylinder exerts a pressure of 11.2 atm at 28.2 °C. How many grams of gas are present?
how many millimeters of 5M NaOH are needed to neutralize 40mL of 2M H2SO4
The equilibrium constant Kc for the decomposition of phosgene, COCl2, is 4.63 x 10^-3 at 527 deg. C
A reaction was conducted in benzene as the solvent. Because the reaction was very exothermic, the mixture was cooled in a salt-ice bath. This was a bad choice. Why?
Choose an acid below and determine how much of the acid in mL that you need to add to 0.800 g of the sodium salt of its conjugate base to prepare a buffer with a pH of 3.8. 3.0 M formic acid
Consider 25.0 g of water at 21.7°C that are mixed with 25.0 g of water at 43.3°C in a foam cup calorimeter. The equilibrium temperature reached was 30.4°C.
According to the following reaction, how many grams of ethylene (C2H4) are required for the complete reaction of 23.8 grams of hydrogen gas?
An automobile gasoline tank holds 47kg of gasoline. When the gasoline burns, 165kg of oxygen are consumed and carbon dioxide and water are produced.What is the total combined mass of carbon dioxide and water that is produced?
A diprotic acid, H2A, has pKs 8.4 and 3.5. 50.0 mL of 0.10M of the diprotic acid, H2A, is titrated with 0.20 M NaOH. What is the Ve (i.e. the first equivalence point)?
Vanadium crystallizes in a body centered cubic lattice (the V atoms occupy only the lattice points). How many V atoms are present in a unit cell?
Which of the following statements about free radicals is true? Free radicals are considered good because they are good oxidizing agents.
The reaction X(s) ? X(g) is known at 25oC to have standard enthalpy, free energy, and entropy changes of 146.8 kJ, kJ, and 175.4 J/K. At what temperature (oC) does X(s) sublime?
Hospital patients are administered oxygen from an pressurized hyperbaric oxygen chamber. 600.0 L of oxygen is compressed in a cylinder at 160.0 atm. What volume of oxygen can a cylinder supply at the given pressure.
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