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Problem- Find the algebraic answer, absolute uncertainty and percent relative uncertainty (%) and express each answer with a reasonable amount of significant figures. What is the absolute value , absolute error and relative error of: log[8.47 (+/- 0.05)]
Write your solution in appropriate format and provide references
Calculate a) the amount of ethylene glycol required. b) the amount of by product evolved and c) the amount of polyester produced.
Question- A sample of drinking water collected from a suburban Boston municipal water system in 2002 contained 0.52 pCi/L of radon. Assume that this level of radioactivity was due to the decay of 222 Rn (half-life = 3.8 days)
Lipitor blocks production of chlosterl in the liver. In addition to this reduction of the serum level of cholsterol, HDL acts to remove LDL from the bloodstream. How might this occur?
write the balanced chemical equation for the preparation of hydrogen and carbon dioxide gases by the reaction of water
This compound, C5H10, gives a negative test for C-C double bonds and gives only one monobromo substitution product, C5H9Br. Propose a structure for this compound
How many faradays of electricity are required to produce 0.84L of O2 at exactly 1 atm and 25 degrees Celcius from aqueous H2SO4
Explain what is the pH of a buffer made by mixing 0.125 mole of Formic acid Ka=1.78x10-4 with 0.190 moles of Sodium formate in a final volume of 1.75 liters. Demonstrate calculations please.
if the the atmospheric pressure is 685 mm Hg, what would the partial pressure of oxygen and of nitrogen be?
1. the analysis of a compound gives it composition as 31.6k 29.3cccl and 39.1 oxygen . determine the empirical formula
What mass of solid aluminum hydroxide can be produced when 50.0 mL of 0.288 M Al(NO3)3 is added to 200.0 mL of 0.159 M KOH
calculate the ph of a solution prepared by mixing 250. ml of 0.174 m aqueous hf density 1.10 gml with 38.7 g of an
A 0.4512 g sample of a primary-standard-grade Na2CO3 required 36.44 ml of a H2SO4 solution to reach the end point of the reaction.
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