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Problem- In a preparation of 2-butanone 2,4-dinitrophenylhydrazone, calculate the amount of reagent to be weighed out from a bottle of (70% 2,4-DNP/30% H2O) if it is reacted with 4.14g of 2-butanone and a 1.4 molar excess of the 2,4-DNP is required. Show all calculations.
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How many grams of methane [CH4(g)] must be combusted to heat 1.00 kg of water from 25.0°C to 90.0°C, assuming H2O(l) as a product and 100% efficiency in heat transfer?
assume that you are a chemical engineer attempting to optimize the process cog 2h2g right arrow ch3ohg what
Give the number of electrons, Protons and neutrons in 24NA and give the electron configuration of the following A: A1 B: F- (- is at the top)
List the chemical names and number of atoms for each chemical for each of the following equations.
Calculate the number of grams of sulfuric acid in 0.440 of battery acid if the solution has a density of 1.34 and is 39.1 sulfuric acid by mass.
Suppose you have 0.001 M solution of a dye with pka of 7.2. from the color, concentration of protonated form is found to be 0.0002 M. Assume remainder of the dye is in the deprotonated form. What is the pH of the solution?
Show how you would synthesize di-tert-butyl ether from any starting material you would like that contains four or fewer carbons
energy in amount of 433 J is added to a 80 g sample of water at temperature of 27 degrees Celsius. What will be the fianl temperature for the water?
Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide: A 5.50-g sample of \rm CaO is reacted with 5.31 g of H_2O. How many grams of water remains after completion of reaction
Problem- Calculate the difference between delta H and delta U when 1.0 mol of grey tin 5.73.g cm-3 changes t o white tin 7.31gcm-3 under 1*10^6 pa pressure at 298K, delta H =2.1KJ. Calculate the volume changes. 1 Pa=1KG m^-1S^-1
In a flowchart, show how one can separate acetophenone, benzyl alcohol, and benzamide from each through acid/base extraction.
how do you caclulate the theoretical yield? I began using 2.00 g of Salicylic acid, 5.0 mL of acetic anhydride, and added 5 gtts of concentrated sulfuric acid.
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