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Vanadium has two naturally occurring isotopes,V with an atomic mass of 49.9472 amu andV with an atomic mass of 50.9440. The atomic weight of vanadium is 50.9415. The percent abundances of the vanadium isotopes are __________% 50V and __________% 51V.
iF 0.80g of a gas occupies 295 mL at 25 degrees Celcius and 680 mm Hg of pressure, what is the molar mass of the gas.
When 2.00 g of hydrazine (N2H4) decomposed under constant-pressure conditions, 7.00 kJ of heat were transferred to the surroundings. What is pH for the following reaction? 3 N2H4(l) --> 4 NH3(g) + N2(g)
What are the major products formed upon treatment of (E) 3-methyl-2-hexene with HBr in the absence of peroxides?
adding the two portions of water into your calorimeter the temperature of the mixed portions of water to be 45 oC. determine the heat capacity of the calorimeter?
What is the Molarity of a solution prepared by diluting 55mL of .65 M hydrochloric acid solution to a final volume of 155mL by adding water.
what hybrid orbitals are used about the central atom of each of the angles.
What volume of each of the following acids will react completely with 50.31 mL of 0.146 M NaOH?
If a process is carried out at constant pressure P and the volume V of the system decreases, then is delta V negative or positive and is the work w negative, positive, or zero
Solid aluminum reacts with chlorine gas to produce solid aluminum chloride. If 2.70 grams of aluminum and 4.05 grams of chlorine gas were mixed, what maximum mass of aluminum chloride could be produced?
A 15.0- mL sample of 0.100 Ba(OH)2 is titrated with 0.125 M HCl. Calculate the pH for at least five different points throughout the titration curve and make a sketch of the curve.
DNA double helix has the sequence GATCGATTAC, what is the sequence of the other DNA strand?
How many different aldols (b-hydroxyaldehydes), including constitutional isomers and stereoisomers, are formed upon treatment of butanal with base?
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