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(a) What is the general relationship between the size of an atom and its first ionization energy?
(b) Which element in the periodic table has the largest ionization energy? Which has the smallest?
Calculate the force of attraction (in N) between a cation with a valence of +2 and an anion with a valence of -2
You have 250.0 mL of a 0.56M solution of sodium acetate. How many mL of 0.50M acetic acid should be added to make a buffer of pH 4.40.
a graduated cylinder contains 129 of water. a 17.0 piece of iron density 7.86 and a 21.0 piece of lead are added.
One adds 25.00 mL of the solution in # 26 above to a 100 mL volumetric flask and adds enough water to fill the flask to the mark with stirring. (a) What is the molarity of the resulting solution
What is the molarity of a 50% (by mass) NaOH. How did you find this value? Using this molarity, show that 13ml of 50% by mass NaOH diluted to 2200ml with distilled water yields a solution that is about 0.1M NaOH.
The peak absorbance of the first chromatographic peak at 300nm was 0.020 and at 350nm 0.030. What is the main component of the first eluting peak and what percentage of the total absorbance at 300nm is due to this component?(assuming the light pat..
The main reason that alkyl halies are good electrophiles is that: A) the carbon atom linked to the halogen is negatively polarized. B) the carbon atom linked to the halogen is positively polarized
Explain what is the empirical formula of a compound containing 27.88% phosphorus and 72.15% sulfur. Determine the molecular formula if the molar mass is 444.6 g/mole.
Problem- For the reaction shown below, which change in conditions made to the system at equilibrium will result in a net reaction to the right to form more product?
Which of the subsequent molecules would be expected to form hydrogen bonds in the liquid or solid state- ethylene glycol, methanol, and formaldehyde
Write the chemical equation for all the reactions both SN1 and SN2 involving primary and secondary substrates b) Rank the primary halide in order of increasing reactivity toward SN2
Ignoring activities find out the molar solubility of copper (I) aside (CuN3) in a solution with a pH of 12.04. Ksp (CuN3) = 4.9 × 10-9; Ka (HN3) = 2.2 × 10-5.
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