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Helium gas is contained in a pressure vessel of volume V=10m3. Determine the mass (in kg) of helium in the tank if the temperature is 20°C and the pressure is 4 bar. Use the ideal gas law. For Helium, M=4.003 kg/kmol.
What is the molar solubility of lead(II) chloride in a solution that also contains 0.15 M Cl- ions at 25 °C? The Ksp of PbCl2 is 1.6 × 10-5.
A mixture of CaCO3 and CaO weighing 0.680 g was heated to produce gaseous CO2. After heating, the remaining solid weighed 0.489 g.
Compute the volume of the tank if this tank has 115 moles of neon gas and has a pressure of 57 atm at a temperature of 45 0C.
When 7.00 moles of gas A and 3.00 moles of gas B are combined, the total pressure exerted by the gas mixture is 1.0 atm. What is the partial pressure exerted by gas A in this mixture?
A hot air balloon is filled with 1.51 x 10^6 L of an ideal gas on a cool morning (11 C). The air is heated to 125 C. What is the volume of the air in the ballon after it is heated? Assume that noen of the gas escapes from the balloon.
Assuming efficiency of 26.70 %, calculate the actual yield of magnesium nitrate formed 139.4 g of magnesium and excess copper (II) nitrate. Mg + Cu(NO3)2 -> Mg (NO3)2 + Cu
When 190.0 mL of 0.360 mol are added to 190.0 mL of 1.00×10?2 M AgNO3 (aq), what percentage of the Ag+ is left unprecipitated?
Two readings (initial volume and final volume) are required to deliver a specified volume of titrant. For a delivered volume of 6.25 mL, compute the uncertainty in the volume of titrant delivered.
The Kc for the reaction of hydrogen and iodine to produce hydrogen iodide equals 54.3 at 430 C. Calculate the quilibrium concentrations of H2,I2, and HI if the intial concentrations are H2=I2=0M and HI=.525M.
Calculate the most probable speed of an ozone molecule in the stratosphere, where the temperature is 270 K
Indicate whether or not each of the following compounds is soluble in water. If the compound is soluble, what ions are produced a. PbI2 b. Li2SO4 c. Fe(NO3)3
what is the phase of matter of the solute and solvent of sterling silver?
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