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a) List the following substances in order of increasing normal boiling points, explaining your reasoning: NO, NH3, Ne, and RbCl.
b) Explain why water has a higher boiling point than either HF or NH3. (Hint: Try drawing six molecules of each with as many hydrogen bonds as possible!)
A 15.6 mL sample of a 0.387 M aqueous hydrocyanic acid solution is titrated with a 0.346 M aqueous barium hydroxide solution. What is the pH at the start of the titration, before any barium hydroxide has been added
prepare a PH = 4.00 buffer staring from 1.50 L of 0.0200 M solution of benzoic acid (c6h5cooh) and an excess of sodium benzoate
When a nitrite containing sample with a mass of 3.000 g was analyzed, 16.65 mL of 0.1500 M Na2S2O3 solution was required to completely titrate the sample. What is the mass percent of NO2- ion in the sample
While using the Half Volume method, your solution was dark pink (you overshot the endpoint) and you added the unreacted acid to this solution
The U.S. national ambient air quality standard for CO in a 1-hr period is 35 ppm. How many times greater than this standard is the CO concentration in cigarette smoke?
Thermodynamics equilibrium constant (K) for liquid - gas partitioning is a ratio of the analyte concentration in liquid phase to its concentration in gas phase.
A dioxin-contaminated water source contains 0.081% dioxin by mass. How much dioxin is present in 4.2 L of this water? (Assume that the density of the solution is 1.01 g/mL.)
consider the reaction shown below.4 ph3g p4g 6 h2gif in a certain experiment over a specific time period 0.0033 mol
Quinine emits fluorescence at the wavelength of 347 nm. An unknown quinine solution gave fluorescence reading of 400 (after background subtraction) at the 347nm.
Assign oxidation numbers to all the elements in the following reaction and identify the oxidizing and reducing agents. HNO3+ I2--->HIO3+NO2+H2O
Which of the following substances is more likely to dissolve in liquid CS2. a). Sodium Iodide b). Lithium Iodide c). Iodine d). Potassium iodide
Element X has two natural isotopes: X-6 (6.015 amu) and X-7 (7.016 amu). Calculate the atomic mass of the element X given the abundance of X-7 is 92.5%
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