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Liquid nitrogen has a density of 0.808 g/mL at -196 C. If 370.0mL of LN2 is injected into a weather balloon to inflate it, explain what is the final volume of the balloon at 0.82 bar and 30 C?
Determine at what minimum angle relative to the centerline perpendicular to the doorway can someone outside the room hear no sound?
Calculate the volumes of acetic acid (CH3COOH) and of the acetate (CH3COO-) solution that would be needed to prepare a total volume of 150. mL of buffer. Assume all solutions are 1.00 M. pKa = 4.75.
positron cannot penetrate matter more than a few atomic diameters but positron emission of radiotracers can be
Calculate the lattice energy for the hypothetical ionic compound M2X from the information given below. IE1(M) = 424 kJ/mol M(s) => M(g) ?Ho = 84.3 kJ/mol ?Hof(M2X) = -888.3 kJ/mol X2(g) => 2X(g) ?H = 231 kJ EA1+EA2 (X) = 476 kJ/mol IE1 (X) = 271 k..
From the plots of the boiling point versus the volume of distillate in the simple distillation experiments, what can you conclude
How many moles of iron atoms are in 2.28 mol of Fe2O3?
a solution contains a mixture of pentane and hexane at room temperature. the solution has a vapor pressure of 268 rm
concentrated hydrofluoric acid is 28.9M and has a density of 1.18g/mL. What is the weight percent of concentrated HF?
what is the concentration of a nitric acid solution if a 10.00ml sample of the acid reqires 31.25ml of 0.135m koh for neutralization.
At 25.0 C a solution has a concentration of 3.179M and a density of 1.260 g/mL. The density of the solution at 50.0 C is 1.249 g/ml. What is the molarity of the solution at 50.0 C
write an equations for the reactions that takes place when the compound in ch3ococh2ch3 is refluxed in the presence of
sodium fluoride naf melts at 993c whereas sodium chloride fluoride melts nacl at 801c. explain why this is the case in
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