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A 0.150 M NaCl solution is referred to as a physiological saline solution because it has the same concentration of salts as normal human blood. Calculate the mass of NaCl needed to prepare 275.0 mL of a physiological saline solution.
what is the minimum number of moles of sodium hydroxide required of this hydrolysis reaction to go to completion and what is the limiting reagent in this experiment?
Calculate the pH at the equivalence point in titrating 0.047 M solutions of each of the following with 0.011 M NaOH. (a) periodic acid (HIO4) pH = (b) benzoic acid (HC7H5O2), Ka = 6.3e-05 pH = (c) carbonic acid (H2CO3), Ka = 4.3e-07 pH =
Nitrogen monofluoride, NF, can serve as a ligand in transition-metal complexes. a. Prepare a molecule orbital energy-level diagram of the NF molecule, showing clearly how the atomic orbitals interact.
protein used as standards on an SDS- polyacrylamide gel are 0.80 and 0.41, respectively. What is the apparent mass of a protein having a mobility of 0.62 on this gel?
Naphthalene is a hydrocarbon that is commonly found in mothballs. Naphthalene is 93.75% carbon by mas. If Naphthalene's molecular formula is twice its empirical formula , What the molar mass
calculate the activation energy for a reaction if its rate constant increases from 10 to 45 s as the temperature increases from 298 to 315 k .
For [Co(en)(NH3)2Cl2]ClO4 identify the coordination number of cobalt, the coordination geometry for cobalt, the oxidation number of cobalt, the number of unpaired electrons
Calculate the work done (in J) on the surrounding atmosphere (1atm pressure, 25.8 oC ) by the evolution of hydrogen in the subsequent reaction
What mass of ammonium chloride should be added to 2.65 of a 0.145 in order to obtain a buffer with a of 9.65
Based on the mass of caffeine, you can now determine the % weight of caffeine in the original tablet. How does this compare with what the packaging states?
The combustion of 45.0 g of methane (natural gas) releases 2498 kJ of heat energy. How much energy in kilocalories kcal would combustion of 0.670oz of methane release.
Draw the corrct structure(s) for 2-chloro-2,3-dimethylpentane. Show stereochemistry clearly. Explicitly draw all four groups,
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