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1. When 210.0mLof 0.340MK2CrO4(aq)are added to 210.0mLof 1.10×10-2MAgNO3(aq), what percentage of theAg+is leftunprecipitated?
2. An aqueous solution that 2.10 M in AgNO3 is slowly added from a buret to an aqueous solution that is 1.50×10-2 M in Cl- and 0.250 M in I-. When the second ion begins to precipitate, what is the remaining concentration of the first ion?
Rank the following elements in order of increasing ionization energy and increasing atomic size: P, O, S.
State a detailed mechanism for the formation of ethyl acetate from ethanol and acetic acid with H2SO4 as catalyst. B) Explain how does concentrated H2SO4 catalyze an etherification reaction. Explain
An analysis showed that 25.0 g of this hydrate, CoCl 2 * 6 H 2 O, contains 11.3 g of water. What is the percent water by weight in this hydrate?
The energy needed to dislodge electrons from sodium metal via the photoelectric effect is 275k/mol. Explain what wavelength in nm of light has sufficient energy per photon to dislodge and electron from the surface of sodium
The skeletal structure of one molecule is included to indicate the proper format; modify the X\'s on the given structure to create the first stereoisomer.
Which of the following observations is the strongest argument that in favor of the hypothesis that protein structure and function are related?
determine the specific heat capacity of a metal that has a mas of 14 grams. as the metal cools from 400 degrees celcius
After the reaction was comlete, the volume of the dry has produced was 1 liters at 75 degrees celsuis and 721 torr. what was the percent potassium notrate in the original sample?
use curved arrows to show the flow of electrons in each step, and note any relevant charges or lone pairs of electrons.
A buffer solution is prepared by dissolving 0.200 mol of NaH2PO4 and 0.100 mol of NaOH in enough water to make 1.00 L of solution. What is the pH of the H2PO4- / HPO42- buffer if the Ka2 = 6.2 * 10^-8 A) 7.71
a hypothetical element has two stable isotopes one has a mass of 106.9051 amu with an abundance of 48.183% the other isotope has a mass of 108.9048 amu with an abundance of 51.825% what is the average atomic mass of this element
Gold, like iron and copper, can have more than one monatomic cation. Knowing this, a mining company wanted to find the formula of a gold - chlorine compound that it has come across during its mining operation.
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