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What is the mole percent of ethanol C2H5OH which consists of 71.0g of ethanol for every 18.3grams of water present?
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 path- length = 1.0 cm)
How many grams of HCl are required to react with the 344 grams of FeCl2?
What compounds react with the diazonium salt to give the phenolic product? Why should an excess of nitrogen be avoided in this reaction?
What is the percent by mass of NaHCO3 in a solution containing 80 g of NaHCO3 dissolved in 600 mL of H2O?
when the initial concentration of reactant is 0.71 m a second-order reaction has a half-life of 18 s then determines
A sample of bananas in water is found to have a [H3O1+] = 2.51 x 10-5M. What is the pH of the solution? Are bananas acidic (A), basic (B), or neutral (N)
Why are the injection port and detector always heated to higher temperatures than the column in a gas chromatograph
One of these compounds contains 80.78 percent C, 13.56 percent H, and 5.66 percent O. A solution of 1.00 g of this pheromone in 8.50 g of benzene freezes at 3.37°C. What is the molecular formula of the compound
calculate the work done when 65.0 g of tin dissolves in excess acid at 1.00 bar and 23degc. assume ideal gas
The volume of HI(aq) required to reach the equivalence point : (c) The pH at the half-neutralization point. (d)The pH at the equivalence point.
If 5.40 mol calcium carbide (CaC2) reacts with an excess of water, how many moles of acetylene (C2H2) will be produced?
Potassium nitrate has a lattice energy of -163.8 kcal/mo land a heat of hydration of -155.5 kcal/ mol. How much potassium nitrate has to dissolve in water to absorb
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