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Compound A has a parent peak of M+ = 95 m/z in its mass spectrum and shows a medium intensity sharp infrared absorption band at 2280 cm. The HNMR of compound A shows 3 signals in a 4:4:1 ratio. Treatment of compound A with hot aqueous acid generates compound B (M+= 113 m/z) can be transformed back to A by using SoCl2. Finally compound B can be transformed with lithium aluminum hydride (ether) then aqueous acid to compound C (M+ = 99 m/z). What are A, B, and C
If the coal is burned in a power plant that uses 1900 tons of coal per day, what mass of calcium oxide is required daily to eliminate the sulfur dioxide?
What combination of properties is responsible for the selection of trinitrotoluene as a military explosive?
Silicon Carbide is a hard substance used as an abrasive. it is prepared by heating SiO2 and carbon at high temperatures SiO2 + 3C = SiC + 2 CO determine the limiting and excess reactant.
An antacid tablet containing magnesium hydroxide as an active ingredient requires 22.6 mL of 0.597 M HCl for complete neutralization. What mass of Mg(OH)2 did the tablet contain?
Gas stoichiometry and Percentage of calcium carbonate in the sample
At 0.0oC, if the volume of air is 2.9 mL and the pressure of the atmosphere that day is 675 mmHg, what is the number of moles of air?
3.00×10-3 mol of HBr are dissolved in water to make 18.0 L of solution. What is the concentration of hydroxide ions, [OH^-], in this solution?
White phosphorus is a molecular solid made of molecules of P4. A 3.88 g sample of white phosphorus starts at 24oC. Calculate the amount of heat (in J) required to melt the sample.
Dalton law of partial pressure - The partial pressure of oxygen is maintained at 0.20 atm at this depth
The metal hydride LiH has a density of 0.77 g/cm3 . The edge of the unit cell is 4.086 . If it is assumed that the H ions define the lattice points, does the compound have a face-centered cubic or a simple cubic unit cell?
In a bad sporangiospores and fungi, are found in bag-like structures. Ascospores are also found in bag-like structures, but are always present in even numbers. Why are these spore types not the same?
Physiological saline solutions used for intravenous injections have a concentration of 0.90% NaCl by weight
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