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What is a major consideration in constructing a life jacket that will keep a person afloat? Is it easier for a large person to float in a lake than a small person? Explain. Why must a helium balloon be held with a string?
What about the molecule as a whole? Is that molecule CH4 a polar or non-polar?
How many moles of O2 are required for the complete reaction of 43.5 g of C2H4 to form CO2 and H2O
n-butane vapor and liquid are in equilibrium (boiling) at 18.66 bars. Use the Peng-Robinson equation of state to determine the saturated liquid and saturated vapor molar volumes
Calculate the distances NH3 gas and HCL gas would travel in this experiment if a 100.00-cm tube were used, based on the accepted molar masses of the two gases.
Calculate the change in internal energy, (Delta E) for the reaction. What is the enthalpy of formation per mole of product for the reaction
An aqueous solution contains 12.5% NaCl by mass. What mass of water (in grams)is contained in 2.5L of the vapor above this solution at 55 celcius? the vaor pressure of pure water at 55 celcius is 118 torr.
Draw a phase Diagram (label axes), showing normal boiling boint, critical temperature (b) define critical temperature
Concentrated hydrochloric acid is 38% HCl by weight and has a density of 1.19 g/mL. A solution is prepared by measuring 25 mL of the concentrated HCl,
During a work-up, we are asked to interrupt vacuum, "drizzle" cold methanol over the crude product, then reestablish vacuum. What is the purpose of this step and why does the methanol need to be cold
what are the H3O+ and OH- concentrarions in a 125 mL solution prepared with 0.100 mol pf NaOH and water?
The resulting equilibrium solution has a pH of 10.21. What is the Ksp of the salt at 22 °C?
Which of the following Bronsted-Lowry acids does NOT behave as a strong acid when it is dissolved in water. A) HBr B) HCl C) HNO2 D) HClO4
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