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What is the molar concentration of a H2SO4 solution if a 75 mL sample requires 15 mL of a 1.55 M solution of NaOH to reach the equivalence point?
In order to understand the prehistory of the Hawaiian island of Lana'i better, anthropologists Maria Sweeney, Melinda Allen, and Boyd Dixon used radiocarbon dating on charcoal found in an ancient dwelling site, the Kaunolu Village National Histor..
(1) Explain different pKa value of the following two compounds. When compound A is treated with a strong base, followed by CH3Br, a pair of structural isomers is produced. (2) Write a reaction equation. (3) Use molecular orbital theory to explain ..
Write the chemical equation for the reaction of the basic ion with water to produce hydroxide ion. 1. NaC2H3O2 2. NaHCO3 3. Na2CO3 4. NH4Cl
Determine the number of grams H2 formed when 250.0 mL of 0.743 M HCl solution reacts with 3.41 x 1023 atoms of Fe according to the following reaction. 2 HCl(aq) + Fe(s) ? H2(g) + FeCl2(aq)
In heating an organic compound strongly with metallic sodium, one frequently observes the formation of a blck material, which is insoluble in water
calculate the volume of 0.1205 M NaOH that will neutralize 10.0 mL of 3.8% (by mass) citric acid solution.Assume the density
Calculate the concentration of Hg2+, HgCl+, and HgCl2 that result when 1.00 L of a 0.100M Hg(NO3)2 solution is mixed with an equal volume of 0.100M HgCl2 solution.
Calculate the energy of an electron in a hydrogen atom when it resides in the n=3 level. State your answer in joules. plz show explanation along with answer
A 75.0-mL volume of 0.200 M NH3(Kb=1.8*10^-5) is titrated with 0.500 M HNO3. Calculate the pH after the addition of 25.0 mL of HNO3.
A certain minimum energy(E min) is required to eject an electron from a photosensitive surface. Any energy obsorbed beyond this minimum gives kinetic energy to the ejected electron.
A compound is found to be 26.95% sulfur, 13.43% oxygen, and 59.61% chlorine by mass. What is the simplest formula of the compound?
Consider a sample of helium gas at 28 C with a volume of 3.80 L at a pressure of 3.15 atm. The gas expands to a volume of 9.50 L and the gas is heated to 43 C
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