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How many grams are present in 1 gram of potassium-40? Its natural abundance is 0.0117% and its half life is 1.28X10^9 yrs
In preparation of esters given in an experiment, the reaction product was extracted with 5% sodium bicarbonate solution (NaHCO3) in the isolation step. How? What gas was evolved during this washing step?
What are the p, V, and T values of the final state of the same perfect gas after an adiabatic expansion to a final pressure of 0.100bar that follows the gas law: PV^(5/3)=constant
What are the spectator ions in the solution after the complete neutralization reaction occurs when mixing the strong base NaOH
how many enantiomeric pairs are possible for a monobromo derivative of isopentane?
What fraction of piperazine (perhydro-1,4-diazine) is in each of its three forms (H2A, HA-, A2-) at pH 8.26.
Calculate the volume of 0.125 M radium hydroxide solution required to completely neutralize 10.00 mL of 6.32 M phosphoric acid (3 acidic hydrogens)
Explain which of the following aqueous solutions has the strongest ion-dipole attractions:0.3 M Na3PO4, 0.1 M NiF2,0.2 M Rb2CO3, 0.01 M Sr(OH)2 , 0.03 M ScBr3.
what mass of oxygen gas measured at 238 k and 3.51 atm is required in order to release 6670 kj of heat to the
an ice cube is placed in a beaker of water at 20 c. the ice cube partially melts and the temp of the water is lowerd to
For each of the following species, draw its Lewis-dot structure. If the species exhibits resonance, draw all the resonance hybrids. For each species, tell its shape, bond angles, hybridization of the central atom, and whether it is polar or nonpola..
Fiber is an indigestible cellulose product that passes through our system without getting metabolized. If your burned food contained a lot of fiber, how would you expect your calorie value to the "posted" calorie value on the box
A reaction is performed in which 50.0 ml of 0.400 M silver nitrate and 75.0 ml of 0.100 M hydrochloric acid are mixed together. The initial temperature of the solution was 25.0oC
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