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A photon of ultraviolet (UV) light possesses enough energy tomutate a strand of human DNA. What is the energy of a single UVphoton having a wave length of 24nm?
What is the energy of a mole of UV photons having a wavelength of24 nm?
A solution contains 410.3 g of H2SO4 per litre of solution . If the density is 1.243 g/ml, what will be its molarity and molality.
Diamond has a face-centered cubic unit cell, with four more C atoms in tetrahedral holes within the cell. Densities of diamonds vary from 3.01 g/cm3 to 3.52 g/cm3 because C atoms are missing from some holes.
What is the final temperature of a 123.5 g of silver if the initial temperature was 25.5C and 31 kJ of heat was added
Given 479.5 g of hot tea at 83.0 *C , what mass of ice at 0 *C must be added to obtain iced tea at 10.5*C? The specific heat of the tea is 4.18 J/g*C, and change in H(fusion) for ice is +6.01 kJ/mol.
For CO2 one of the major absorptions of IR radiation occurs at the wavenumber of 2350cm^-1. what is the energy corresponding to that IR photon
what is the best way to distinguish between levorotatory and dextrorotatory enantiomers if measured optical rotation is
Why is it particularly important in the experiment "kinetic an thermodynamic control of a reaction" that the semicarbazones be dry before their melting points are determined
Analysis of an unknown substance showed that it has a moderate melting point and is a good conductor of heat and electricity in the solid phase. Which of the following substance would have those characteristics
What is the difference between an amino acid and a protein? How does this difference in structure affect biological function?
Draw a potential energy diagram for the reaction between 1-butanol and hydrobromic acid. On your diagram indicate the structures of key reaction intermediates that correspond to energy maxima and minima. (B) What is the reaction type for this reac..
This solution was titrated with 2.95*10^-3 moles NaOH. How many moles of HCl consumed by compound? How many moles of NH3 is in sample?
what can you conclude about the process of breaking bonds in the liquid as compared to the gas phase? Explain the difference in the heat of formation values between the two phases.
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