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For the elements scandium through manganese, what is the highest oxidation state equal to? A) none of the above B) the total number of 4s, 3p, and 3d electrons C) the principal quantum number of the period D) the number of 3d electrons E) the total number of 4s and 3d electrons
Ethers react with HI to form two cleavage products. One of the products might react further with HI. In the first box below draw the two major products that could be recovered after treatment with one equivalent of HI
Lanthanum has two naturally occuring isotopes. 0.089% of lanthanum atoms are 138La and the rest are 139La. Estimate the average atomic mass of lanthanum, to the nearest tenth of an atomic mass unit.
the heat of vaporization of isopropyl alcohol c3h7oh is 42.1 kjmol. how many grams of water at 0oc could be frozen to
A beaker with 1.70×102 mL of an acetic acid buffer with a pH of 5.000 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 6.20 mL of a 0.490 it M HCl solution to the beaker. How much wi..
for each of the following three questions 25.0 ml of 0.100 m pyridine kb 1.70 x 10-9 is titrated with 0.100 m hcl. for
The barometric pressure in a cavern was measured using a mercury barometer. A value of 74.2 cm of Hg was obtained. How many atmospheres is this
calculate how much CaCN2 is required to form 12.6 moles of ammonia? Given that the percent yield is 65.8%?
The reaction of benzanilide with Cl2in acetic acid yields a mixture of 2 monochloro derivatives formed by electrophilic aromatic substitution.
A 25.0 g sample of pure iron at 85.0°C is dropped into 75 g of water at 40.0°C. What is the final temperature of water-iron mixture?
How much of 2,4 hexadien-1-ol would you need to react with 98 mg of maleic anhydride in a Diels-Alder Reaction? (Assume a 1:1 molar ratio of maleic anhydride to 2,4 hexadien-1-ol)
a student placed 12.5 of glucose in a volumetric flask added enough water to dissolve the glucose by swirling then
a sample of calcium nitrate cano32 with a formula weight of 164 gmol has 5.00 x 1025 atoms of oxygen. how many
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