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The natural abundance of 13C is only 1.1%. Furthermore, its sensitivity in NMR spectroscopy (a measure of the energy difference between a spin aligned with or against an external magnetic field) is only 1.6% that of 1H. What is the ratio of signal intensities expected for the 1H-NMR and 13C-NMR spectra of the same sample of the following compound?
\(Si(CH_{3})_{4}\)
A piece of sodium metal reacts completely with water as follows. 2 Na(s) + 2 H2O(l) 2 NaOH(aq) + H2(g) The hydrogen gas generated is collected over water
Assemble the alcohols (have the formula of C4H10) in the order of increasing reactivity with concentrated HCl.
Quantum number representations - What are the possible values of the four quantum numbers for one electron in a 5d orbital?
The % mass composition of 0.1458g sample of a compound was measured by burning the compound in an excess of oxygen.
Given Data; P4+6Cl2=4PCl3 change temp= -2439 kj ,4PCl5=P4+10Cl2 change temp= 3438 kj calculate change in temp for the reaction PCl5=PCl3+Cl2.
The density of air at ordinary atmospheric pressure and 25 0C is 1.19 g/L. What is the mass of air, in kg, in a room that measures 12.5 ft by 15.5 ft by 8.0 ft?
How many moles of CO2 will be produced in the combustion reaction starting with the 15.02 grams of ethane.
Determine the value of the solubility-product constant if solubility of T3U2 =4.24× 10-20 mol/L.?
The heat of solution of ammonium chloride is 15.2 kJ/mol. If a 6.253 g sample of NH4Cl is added to 65.0 mL of water in a calorimeter at 26.9°C.
Blood is essentially an aqueous solution but it must transport a variety of non polar substances hormones for example
How many milliliters of 6 M HNO3 would you add to 300 mL of the buffers solution to change the pH from 5.09 to 5.03?
In clavulanic acid there is a carbon-atom that that has an oxygen-atom, a nitrogen-atom, and a carbon atom attached to it
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