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An element has two naturally occurring isotopes. One has an abundance of 37.4000% and an isotopic mass of 184.953 amu, and the other has an abundance of 62.6000% and a mass of 186.956 amu. What is the atomic weight of the element?
Which of the following substances, when added to a saturated solution of AgCO3, will increase the solubility of AgCO3 in the solution?(select all that applies)
What is the redox number for nitrogen in a molecule of nitrogen dioxide
Hex-1-ene, 2-methylpent-2-ene, 2,3-dimethylbut-2-ene, (Z)-hex-2-ene, (E)-hex-2-ene Which one has the highest boiling point and why
describe the hybrid orbitals used by the central atom in o3.and also determines what is the number of sigma and pi
There are two stable isotopes of gallium. their masses are 68.9257 amu and 70.9249 amu. If the average atomic mass of gallium is 69.73 amu, what is the natural abundance of the lighter isotope
The final temperature of the system is 20.15 degrees Celcius. Calculate the specific heat of the metal. (The specific heat of water is 4.184 J/g*C).
For the unbalanced equation _Al+_O2=_Al2O3. How many moles are needed to form 2.3 moles of aluminum oxide.
a. How much heat energy is required to heat the coffee as per the special request? (Show your work.) b. Identify the name and process of each phase change
consider reduction of the following cobalt complexes conh35l3 l pyridine i nc5h4-p-ch2nh2 ii nc5h4-p-conh2 iii by
Among these 3 [10] annulenes, only compounds 1 and 2 were isolated, compound 3 is very unstable. Explain.
Problem- How do you use this speculative chemical equation CuSO4 x 5H2O = CuSO4 + H2O to predict by calculations what the final weights in the crucible might be? Also IMP. Show calculations for two starting weights?
why is it possible to separate the product 6-ethoxycarbonyl-35-diphenyl-2-cyclohexenone from sodium hydroxide using
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