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A compounds 13C NMR spectrum shows a resonance at 205 and 125 ppm. What structural subunit does the compound contain?
A compound's 13C NMR spectrum shows a resonance at 176 and 85 ppm. What possible structural subunit does the compound contain?
Draw the molecule by placing atoms on the grid and connecting them with bonds. Show the formal charges of all atoms in the correct structure. Include all lone pairs of electrons.
A 58.0 mL solution of 0.500 M Cd(NO3)2 is prepared. What mass of NaOH is needed to precipitate the Cd2+ ions from this solution?
Calculate the frequency of the light emitted when an electron in a hydrogen atom makes each of the following transitions.
Three compounds, hexane, heptane, and an unknown molecule were separated using gas chromatography. The adjusted retention times were 10.4 min for hexane,
Describe the type of compound that could have each of the following types of attractive forces: a) dipole-dipole attractions; b) Hydrogen bonding; c) dispersion forces.
The metal barium crystallizes in a body-centered cubic lattice. If the density of barium is 3.51g/cm3, what is the unit cell volume?
the specific heat of silver is 0.24 J/g degree celsius. how many joules of energy are needed to warm 4.37 g of silver from 25 degree celsius to 27.5 degree celsius?
If the titrant has a molarity of 0.2750 M and there are 45.00 mL of analyte present, what is the molarity of the analyte?
The 100.0mL sample was treated with a molybdate reagent that precipitates ammonium phosphomolybdate, (NH4)3 [P(Mo12O40)] x 12H2O. This substance was dried at 110 degree C to remove waters of hydration and heated to 400 degree C until it reached a ..
Mg +2HCl-> MgCl2 + H2 what volume of Hydrogen at STP is produced from the reaction of 50.0g and the equivalent of 75 g of HCl? Also, How much of the excess reagent is left over?
Part A. At 25°C, another student has the following data for the aluminum cylinder. The uncertainty in mA, mB, and mcyl is 0.001 g.
Suppose a black-body chamber is constructed from 55.8 g (one mole) of iron and heated to 500 K. Classical theory and the observations of Dulong and Petit indicate that the total energy of vibration of iron atoms is 3RT per mole.
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