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What is an isotope? Does it mean there is a different number of protons or neutrons?
1.00 mL of .500 M Ag+ is added to this solution and the resultant AgCl quantitatively precipitated. Basd on the Ksp expression, calculate the concentration of the Cl- that remains in solution
Two solutions, "A" and "B", are labeled "0.21 M CaCl2" and "0.34 M CaCl2", respectively. Both solutions contain the same number of moles of CaCl2. If solution A has a volume of 25 mL, what is the volume of solution B
A certain alcoholic beverage contains only ethanol (C2H6O) and water. When a sample of this beverage undergoes combustion, the ethanol burns but the water simply evaporates and is collected along with the water produced by combustion.
What is the molar concentration of the solution of 37.5g Ba(MnO4)2 per Liter? What is molar concentration with respect for each ion, Ba2+ and MnO42-
Explain by what factor does the fraction of collisions with energy equal to or greater than the activation energy of 100 kj/mol change if the temperature increases from 19C to 59C
Question- at pH 7, arginie (pks are alpha carboxylate 1.82, alpha amino 8.99, guanidino 12.48) would be charges as follows? How can you figure this out if you can't memorize the structure of the amino acid
A 12.0 g sample of solic NH4Cl is heated in a 5.00 L container to a high temperature. At equilibrium, the pressure of NH3 (g) is 1.22 atm. What is the value of Kp for the reaction
Draw all the monochlorinated derivatives of 2,2,3,3-tetramethylbutane that are skeletal isomers of one another. To make a monochlorinated derivative of a compound, replace one H atom in the compound with Cl.
Write a reaction mechanism for the reaction of 1-chloropentane with NaHS using dimethylformamide as the solvent. Draw the structure of the reaction intermediate clearly showing its geometry.
Explain why does the wavelength of light emitted by CdSe nano particles shift from red to green as particle size is reduced. Explain what is this phenomena called.
in developing the melting point of a compound if the heating is carried out too fast would the observed melting point
Silver has an average atomic mass of 107.87 u. If 48.18% of Ag exists as Ag-109 (108.9047 u), what is the identity and the atomic mass of the other isotope?
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