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Question- Answer the following questions for 4-ethyl chalcone compound 1. How many lines does it have? 2. How many small lines does it have? 3. What is the ipso position shift of this compound?
Any expert is able to provide answer for this problem in very short time
carbon disulfide burns with oxygen to form carbon dioxide and sulfur dioxide in the following mannercs2 3o2 rarr co2
Bromine is larger than chlorine however the equilibrium constant indicates that a chloro substituent has a greater preference for the equitorial position than a bromo substituent does. Propose an explanation for this fact.
Problem- Consider the combustion reaction between 28.0mL of liquid methanol (density=0.850g/mL) and 14.0L of oxygen gas measured at STP. The products of the reaction are CO2(g) and H2O(g). Calculate the volume of liquid H2O formed if the reaction go..
What components of phospholipids contribute to the liquid crystal nature of membranes
Calculate the work done (in joules) against a pressure of 1.0 atm at 25 o C. If 3 moles of H 2 react with 3 moles of Cl 2 to form HCl while
consider a single d-electron in a homogeneous magnetic field.calculate the angles which the respective angular momentum
A solution of ethanol (C2H5OH) in water is prepared by dissolving 69.8 mL of ethanol (density = 0.79 g/cm3) in enough water to make 250.0 mL of solution. What is the molarity of the ethanol in this solution?
An understanding of Le Chatelier's principle is fundemental to the study of chemistry and helps us to understand everyday situations.
What is the molar solubility of magnesium carbonate ( MgCO3 ) in water? The solubility-product constant for MgCO3 is 3.5 × 10-8 at 25°C.
A sample of an unknown gas effuses in 10.9 min. An equal volume of H2 in the same apparatus at the same temperature and pressure effuses in 2.35 min. What is the molar mass of the unknown gas
What spectroscopic method would you use to unambiguously distinguish between the following isomeric acids. Give an explanation of how the spectra are interpreted to give you an assignment for each compound.
A 10.0 mL sample of aqueous H2SO4 requires 24.32 mL of 0.134 M NaOH to reach the endpoint. What is the molar concentration of H2SO4. First write the equation for the reaction.
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