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Diffrentiate between hydrocarbon and isotopes and give the general formulas of alkanes,alkenes and alkynes
The Kb of methylamine is 4.4*10^-4. What is the pH of a 0.35 M solution of methylamine? a. 10.19 b. 3.81 c 12.09 d. 1.91 e. 11.56
calculate the molality m of a 7.25 kg sample of a solution of the solute ethanol dissolved in the solvent water if the
in writing the lewis structure when we do not have to worry about electrons distribution in each atom alone and when we
Which species is amphoteric. 1) HNO3(aq) 2) Cl-(g) 3) CO32-(aq) 4) HSO3-(aq) 5) PO43-(aq)
Problem- Nitrogen and oxygen react to form nitric oxide (NO). All substances are in the gas phase. If 0.469 atm of nitrogen and 0.411 atm of oxygen react, what is the partial pressure of nitric oxide (in mmHg) when this reaction goes 82.1 complete..
boron has primarily two isotopes one withatomic mass of 11 amu and the other with an atomic mass of 10 amu.if the
consider the titration of 50.0 ml of a 0.100 m solution of the protonated form of alinine h2a ka1 4.6 x 10-3 ka2 2.0
If .75% of the Si atoms are removed during the treatment in part (c), how many moles of HF are required per wafer assuming 100% reaction yield
The product of this reaction, ozone, is a pollutant in the lower atmosphere. Ozone is an eye and lung irritant and also accelerates the weathering of rubber products. write Lewis strucktures of each of the reactants and products in the preceding r..
A saturated solution of lead(II) chloride was prepared by dissolving PbCl2 solid in water. The concentration of Pb+2 ion in the solution was found to be 1.62*10^-2M . Calculate Ksp for PbCl2 .
15.0 grams of an unknown sugar was dissolved in water and the final volume of the solution was brought up to 1.00 L. The osmotic pressure of this solution was determined to be 2.44 atm at 25°C. Which of the sugars below was most likely the unknown..
the reaction conditions are influencing the directing effect of the -NH2 group. Explain why this occurs, using both words and structures.
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