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Compute the number of mill moles in 500 mg of each of the following amino acids: alanine (MW=89), leucine (131), tryptophan (204), cysteine (121), and glutamic acid (147).
Which of the following has a dipole moment. A) CO2 B) BCl3 C) BrF3 D) more than one of these E) none of these
1. what is the formula of a compound if a sample of the compoundcontains 0.537 mol x 0.358 mol y and 0.895 mol z?2.
A compound contains a transition metal coordination complex. This coordination complex consists of one iron(III) ion with three C2O42- ions attached as ligands. Which formula below describes a compound that fits this description
Calculate the concentration of H3O+, OH-, NH4+, and NH4+, and NH3 in 1.00 x 10-6 M NH4Cl solution. Kw = 1.00 x 10-14 and K = 5.52 x 10-10 for NH4+ H2O ?=? NH3 + H3O+.
What is the retention factor for the following TLC plate if the baseline is 1 cm, elution solvent traveled 5 cm from the bottom of the plate, and the spot of interest traveled 3.5cm
a student spots an unknown sample on a tlc plate and develops it in dichloromethane solvent. only one spot for which
calculate the mass in grams of NaCl Present in each of the following solution A. 11.5 g Of 6.25 % NaCl Solution B. 6.25 g of 11.5 % NaCl solution
If Formic acid (HCO2H, Ka = 1.8 × 10-4) is the principal component in the venom of stinging ants. Define what is the molarity of a formic acid solution if 25.00 mL of the formic acid solution want 49.80 mL of 0.0567 M NaOH to reach the equivalence..
A Vessel of of volume 22.4 L contains 2.0 mol H2 and 1.0 mol N2 at 273.15 K initially. All the H2 reacted with sufficient N2 to form NH3. Calculate the partial pressures and the total pressure of the final mixture.
explain why nitration occurs more rapidly in a mixture of concentrated nitric and sulfuric acids than in concentrated nitric acid alone
A certain reaction has an enthalpy of change in H = 54 kJ and an activation energy of Ea=81 kJ. What is the activation energy of the reverse reaction
Substitution and elimination reactions are competing reactions. Under what conditions can you ensure that substitution will predominate
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