Chemistry, 11.02.2020 02:18 NREYESLDS2806
A certain isotope X + contains 54 electrons and 78 neutrons. What is the mass number for this element?
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What does the symbol (–hfus) indicate in a phase change?
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Which three statements represent the benefits of performing experiments using computer simulations?
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Calculate the ph at the equivalence point for the titration of a solution containing 150.0 mg of ethylamine (c2h5nh2) with 0.1000 m hcl solution. the volume of the solution at the equivalence point is 250.0 ml. kb forethylamine is 4.7 × 10−4 .
Answers: 2
A certain isotope X + contains 54 electrons and 78 neutrons. What is the mass number for this elemen...
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