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Describe the basic structure of the periodic table. Give at least three examples of "periodic trends" observed based on the periodic table.
question calculate the ph of a solution prepared by dissolving 200.0 mg of baoh2 171.3 gmol to 100.0 ml of solution.
When 23.0 mL of 0.600 M H2SO4 is added to 23.0 mL of 1.20 M KOH in a coffee-cup calorimeter at 23.50°C, the temperature rises to 30.17°C. Calculate pH of this reaction.
dinitrogen pentoxide n2o5 decomposes in the gas phase to form nitrogen dioxide no2 and oxygen gas o2. the reaction is
How many grams of solid magnesium nitrate should be added to 5.0 g of solid sodium nitrate in a 500-mL volumetric flask in order to produce an aqueous 0.25 M solution of NO3
Determine the maximum number of electrons that can exist in a completely filled n=5 level. Give four possible quantum numbers for a 5f electrons of the hydrogen atom
For a steel bar deformation begins at 400MPa, it has a modulus of elasticity of 207GPa. a) What is the maximum load that can be applied to a cylindrical specimen 10mm diameter and 60mm long without plastic deformation? b) What is the maximum length ..
The density of a salt solution is 1.13 gm/cm3. The solution contains 17.0% sodium chloride by weight (there are 17 gm of NaCl for every 100 gm of solution) . What volume of solution will contain 35.0 gm of NaCl
You believe you have cracked a secret code that uses elemental symbols to spell words. The code uses numbers to designate the elemental symbols.
The reaction of 2,2-dimethyl-1-propanol with HBr is very slow and gives 2-bromo-2-methyl-propane as the major product
Compound A has the molecular formula C14H25Br and was obtained by reaction of sodium acetylide with 1,12-dibromododecane. On treatment of compound A with sodium amide
Problem- A metal pellet of 100.0 g at 95.0 degrees Celsius is dropped into 218 g of H2O at 23.8 degrees Celsius. if the metal pellet has a specific hear of 0.570 J/(g*degrees C) and the water has a specific heat of 4.184 J/(g*degrees C) what is th..
you have a 5.68 g sample of a compound with the formula xcl2 where x is a metal cation. when the sample is treated with
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