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A Chem237 student who shall remain nameless noticed one day that his shaving cream had a taste component that reminded him of the taste of his favorite El Cheapo yogurt. Ethyl acetate extracts of both materials produced a substance that almost did not run at all on a silica TLC plate with toluene as the eluent. He was able to distill a small amount of the material at 8 mm Hg pressure and observed a boiling point of 136 °C at that pressure. However, the material solidified in the condensor of his still and had to be removed mechanically. Elemental analysis of the solid suggested the composition C9H10O3. The solid melted at 117 °C and gave the following nmr spectra and the ir spectrum. What is this material and why and how did it come to be in both of these sources?
what are possible reasons for the differences observed in conductivity for H3PO4 and H3BO3? Explain it please. B) Write out the dissociation steps for H3PO4 and H3BO3.
If 24g Mg is used and the percentage yield is 95%, how many grams of magnesium hydroxide should be recovered?
The density of liquid mercury is 13.6g/mL at 25 celsius. What is the density in g/cm3?
A gas mixture composed of helium and argon has a density of 0.605g/L at a 741mmHg and 298K .What is the composition of the mixture by volume?
My dilemma is that I'm unsure on how to find the actual limiting reactant, and what information I should use. There's too much given; but from my introspection, we only need 1-Octene and the Pt catalyst
200 mL of 1.00M NaOH is reacted with 200 mL of 1.00 M HCl in a calorimeter. The calorimeter and the solutions were at an initial temperature of 19.5oC before mixing.
Table salt (NaCl) and sugar (C12H22O11) are accidentally mixed A 5.00g sample is burned and 2.20-g of CO2 are produced. What is the mass percentage of the table salt in the mixture.
In a titration of 25.80 mLs of 0.256 M HCOOH (formic acid, Ka = 1.8x10-4) with 0.286 M KOH, how many mLs of titrant will be required to reach the equivalence point?
Reactions within equations and properties of acidity, A reaction occurs for each of the following below. How do you differentiate between the different driving forces? (a driving force can either be the transfer of electrons; the formation of a pr..
determin the rate for the reaction. (B) how long would it take for 25% of the reactant to decompose?
How many grams of Cl2 can be prepared from the reaction of 15.0g of MnO2 and 30.0g of HCl according to MnO2 + 4HCl >> MnCl2 + Cl2 + 2H2O
Why is molarity not the best means of stating acid strength? Is molarity the most representative form of quantifying acids and bases?
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