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What is the direct effects of bromination of vanillin? Debating between 5-bromovanillin and 6-bromovanillin. One would expect 5-bromovanillin in the meta position based on stability of all substituents, but 6-bromovanillin in the ortho position avoids more steric hindrance from the alcohol and the -OR group.
consider the titration of 100.0 ml of 0.100 m h2nnh2 kb 1.8 multiplied by 10-5 by 0.200 m hno3. calculate the ph of
Calculate the osmotic pressure at 25°C of an aqueous solution of 1.00 g/L of a protein having molar mass=2.50×104 g/mol.
Ethylene glycol, C2H6O2, is widely used as an automotive antifreeze. What is the minimum weight, in grams, of this compound that must be added to 10 kg of water to produce a solution that will protect an automobile cooling system from freezing at ..
How many grams of solid barium sulfate form when 25.5 mL of 0.160 M barium chloride reacts with 69.3 mL of 0.055 M sodium sulfate? Aqueous sodium chloride is the other product.
Draw the structure of a DNA nucleotide represented by the abbreviation "C." Do not include formal charges on the phosphate group.
Write a chemical equation for the reaction of an aqueous solution of sodium stearate with each of the following
An unknown gas effuses at a rate of 86.6 mol/hr. Under similar conditions, I2 effuses at a rate of 30.4 mol/hr. What is the molar mass of the compound.
A 15.0 L sample of a gas has a mass of 18.0 g at 25.0 ° C and 740. torr. What is the density of the gas at STP?
Why do aldehydes undergo nucleophilic addition faster than ketones? Explain based upon the transition state (applying Hammond's principle) and electronic and steric actors.
Many organic chemists when making a new solid compound often first try ethanol as a recrystallizing solvent. If soluable at room temperature, they simply add water and this often works! Why?
How much heat is required to warm 211 g of ice from -45.9°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C?
the density of an unknown metal is 8.94gcm3 and its atomic radius is 0.126nm . it has a face-centered cubic
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