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Explain how carbon NMR distinguishes the 3 isomers1, 2-dimethylbenzene, 1, 3-dimethylbenzene and1, 4-dimethylbenzene?
Explain why are they difficult to distinguish using proton NMR?
A flask contains a mixture of hydrogen and oxygen. The pressure exerted by these gases is 785 mmHg. If the partial pressure of the hydrogen in the mixture is 395 mmHg, what is the partial pressure of the oxygen?
How many ml of a 2M HCl are required to neutralize 200 ml of a 0.4 M solution of NaOH?
How much heat is produced by the complete combustion of 253g of CH4? Ch4(g) +2 O2(g) ----> CO2(g) + 2H2O (g)
Sodium hydroxide (NaOH) has a lattice energy of -887 kJ/mol and a heat of hydration of -932 kJ/mol.
Explain how many mL of water should be added to 1000mL of a 0.1581 M solution of Ba(OH)2 to make it exactly 0.1000 M
Tell what type of chemical reaction is represented by the following chemical equation.
A "Nature Valley Trail Mix " chewy granola bar contains 140 calories (Cal). If this energy were to be used to heat up 4.25 L of water at 25 degrees Celsius
For some iron-carbon alloy, the mass fractions of total ferrite and total cementite are 0.55 and 0.46 respectively. (a) On the base of carbon content would this alloy be classified as a steel or a cast iron? Why? (b) If the alloy is a steel, is it..
Predict just the first step that might occur between the polyphenol shown below and Na2CO3
two compounds with partition coefficients of 15 and 18 are to beseparated on a column with vmvs 3.0 andtm1 min.
For any gas, the voulme the gas occupies is directly proportional to the number of moles of gas at a given temperature and pressure. Air is 21.0% (by volume) O2 How many moles of oxygen are present in 10.0 moles of air
Compare and contrast these methods of extraction- Solid phase extraction, liquid liquid extraction, Supercritical fluid extraction, Derivatization, and solid-phase microextraction
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