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The density of potassium, which has the BBC structure and one atom per lattice point, is 0.855 g/cm3. The atomic weight of the potassium is 39.09 g/mol. Calculate the lattice parameter and the atomic radius of potassium.
Why is it necessary to remove the stopper from a reparatory funnel when liquid is being drained from it through the stopcock
Draw the molecular-orbital-energy level diagram for the SO molecule and the NF molecule
An environmental engineer analyzes a sample of air contaminated with sulfur dioxide. To a 500. mL sample of air at 700. torr and 38°C, she adds 20.00 mL of 0.01017 M aqueous iodine, which reacts as follows:
What are the [H3O+] and the pH of an ammonia buffer that consists of 0.37 M ammonia and 0.24 M ammonium chloride? Kb of ammonia = 1.8 x 10-5.
The following reaction is known to have a standard change in enthalpy of 148 kJ/mol and a standard change in entropy of 312 J/(mol•K) at 25ºC. What is the normal boiling temperature (ºC) of XY3? XY3(l) ? XY3(g)
What is the molaity of a solution prepared by dissolving 75.8 of ethylene glycol, HOCH2CH2OH, in 1.45 L of water? assume the density of water is 1.00 g/mL.
Solubility of a gas in water depends on Nature of the gas - Pressure of the gas
Which geometry and central atom hybridization would you expect in the series BH4-, CH4, NH4+? (b)What would you expect for the magnitude and direction of the bond dipoles in this series
Draw structures corresponding to each of the given names. Draw: 2-fluoro-3-methylpentane, 3-cyclobutylpentane
What is the freezing point of a solution that contains 12.0 g of glucose (C6H12O6) in 50.0 g of water (Kf = 1.86°C/m)
neutral compound show traces of an acid as an impurity wheras the acid might not show any traces of a neutral compound?
What is the pH of a buffer solution of phenol and its conjugate base. [C6H5OH] = 0.11 M and [C6H5O]- = 0.80 M.
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