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Explain what is the number of radioactive K-40 nuclei if Nt =6.27 x 10 to the negative 4 x 1 mole k-40/Molar mass x 6.022 x 10 to the 23/ 1 mole
you store the buffer in the fridge overnight (4 degrees). Calculate the pH of the buffer when you take it out of the fridge the following morning.
Calculate the volume the gas will occupy if the pressure is increased to 1.87 while the temperature is held constant.
the volume of 4 cubic meters of gas is kept under constant pressure. its tempeture is increased from a minus 73 degrees celsius to 127 degrees celsius. What is the new volume of the gas?
What is the stereochemical relationship of the products formed by reacting racemic lactic acid with (S)-1-phenylethylamine?
a mixture of gas with a total pressure 760mmhg having each of the given gasesco2 ar o2at the indicated partial
determine the entropy change for freezing 6.33 grams of c2h5oh at 158.7 k? h -4600 jmol. express your answer in units
A mixture of 0.150 moles of C is reacted with 0.117 moles of O2 in a sealed, 10 L vessel at 500 K, producing a mixture of CO and CO2
a 0.204 g sample of a co32- antacid is dissolved with 25.0 ml of a 0.0981 m hcl. the hydrochloric acid that is not
The standard free energy of activation of a reaction A is 73.9kJ/mol-1 (17.7 kcal mol-1) at 298 K. Reaction B is one million times faster than reaction A at the same temperature. The products of each reaction are 10.0 kJ mol-1 (2.39 kcal mol-1) mo..
calculate the force of attraction in n between a cation with a valence of 4 and an anion with a valence of -1 the
Use the thermodynamic data in Appendix B to calculate the standard cell potential and the equilibrium constant at 25 for the cell reaction in a direct methanol fuel cell
Can someone please explain the chemistry of lidocaine synthesis to me. We made lidocaine in the lab and used 2,6 dimethylaniline, glacial acetic acid, chloracetyl chloride, sodium acetate, toluene, diethtylamine, hexane, HCL, potassium hydroxide a..
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