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A buffer is made up of 355 mL each of 0.200 M NaHCO3 and 0.134 M Na2CO3. Assume that volumes are additive. Enough water is added to this buffer to make the total volume 10 L. Calculate the pH of the buffer after the addition of 0.0300 mol of HCl to 0.710 L of diluted buffer.
How do the enthalpy of dissolution, the crystal lattice energy, and the solvation energy of the two salts relate to these experimental observations?
Which is a correct IUPAC name for CH3OCH2CH2OCH3. A) 1,4-dioxane B) ethylene glycol dimethyl ether C) 1,4-dioxapentalene D) 1,2-dimethoxyethane E) 1,2-diethoxymethane
Synthetic polypeptides can assume an helical structure under appropriate conditions. Indicate whether polylysine and polyglutamate form an helix or a disordered structure at the indicated pH values.
a graduated cylinder contains 154 of water. a 15.0 piece of iron density 7.86 and a 18.0 piece of lead are added.
Given that the N triple bond energy in N2 gas is 941 KJ/mol and that the O double bond in O2 gas is 494 kJ per mole, calculate the no bond energy in No and ONO
Calculate the average translational kinetic energy (sometimes just called average kinetic energy)
stable conformation, CH3 at 0,120d, H at 240, then on the other side has H at 0, 120, CH3 at 240d?? and is this a gauche conformation?
Cesium chloride crystallizes in a cubic unit cell with Cl- ions at the corners and a Cs ion in the center. 1. Count the numbers of positive and negative charges
Calculate the amount (mL) needed of a 4.0 M phenylmagnesium chloride in THF solution to give 1.5 equivalents based on the amount of starting material used. Starting material needed: 0.58 mmol? mL of 4.0 M phenylmagnesium chloride in THF
Draw structural formulas for the alkoxide ion and the alkyl(aryl)bromide that may be used in a Williamson synthesis of the ether shown. ch3-0-chch3 with a ch3 off of the second carbon from the right Draw both structures in the single sketchpad.
Explain the steriochemisty of gyceraldehyde and glycerol, give reasons for absence of anomeric forms in sucrose
A piece of pure aluminum is placed in contact with a piece of pure copper. At what temperature should diffusionoccur for the concentration of copper in aluminum
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