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For the molecular fragments given below indicate the multiplicity and relative intensities of the peaks that would be produced by the bold-faced hydrogen atoms in a 1H nmr spectrum (you may assume that the R groups do not contain hydrogen atoms within 3 bonds of the bold-face hydrogen):
(i) CH3Cl;
(ii) R1CH2CH2R2;
(iii) R1CH2CH2R1;
(iv) R1R2CHCH2R3;
(v) R1R2CHCH2CH2R3;
(vi) CH3C6H5.
CaCN2 + 3 H2O → CaCO3 + 2 NH3 . How much NH3 is produced if 187 g of CaCO3 are produced?
A solution containing potassium bromide is mixed with one containing lead acetate to form a solution that is 0.013M in KBr and 0.0035 M in Pb (C2H3O2)2.
A colored compound or complex ion provides a preliminary indication of the presence of which of the aluminum Group ions? Give the chemical formula
Suppose that you have a reaction vessel containing an equilibrium mixture of CO(g), O2(g), and CO2(g). Under the following conditions, will the amount of CO increase, decrease, or remain the same?
Hydrogen gas is collected at 29 c the total pressure of the system is 773 torr. If the vapor pressure of water at 29c is 30 torr what is the partial pressure of the hydrogen gas?
Twenty grams of liquid mercury at 98.0 °C is placed in 47.0 g of water initially at 25.0 °C. What is the final temperature of the water, assuming the styrofoam calorimeter absorbs no heat at all?
Pyridine(C5H5N) is a weaker base in H2O than 2,6 lutidine (dimethylpyridine), but we observe that the pyridine-BF3 complex is more stable than the comparable lutidine-BF3. Explain the reason for this inversion in stabilities.
what product would be obtained if acetaminophen were hydrolyzed in acidic aqueous solution?
To cool a volume of water from 176° K to 100° K, 7.9 x 104 J of heat energy must be removed. What is the volume of water that was cooled?
Total heat evolved by the reaction by adding the heats required to raise both the solution and the calorimeter to the maximum temperature. 5). Heat evolved per mole of Mg 6) Change in enthalpy for the following specific reaction. Be sure to indica..
proportional only to the numbers of hydrogens that give each product when substituted for by chlorine. What would be the relative yield of each product?
What mass of water (in grams) forms from the reaction of 2.58 L of hydrogen gas and 2.26 L of oxygen gas?
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