Anuclide of mc012-1.jpg absorbs a positron. which is the resulting atom? mc012-2.jpg mc012-3.jpg mc012-4.jpg mc012-5.jpganswer is d

Answer : The correct answer is ⁶⁴ Zn ₃₀ .

Positron is ⁰e₊₁ particle . When it is absorbed the atomic number increases by 1 but atomic mass remains same . The given nuclide is ⁶⁴ Cu₂₉ . In this atomic mass is 64 and atomic number is 29 .

So when it will absorb one positron the atomic number will increase by 1 that is atomic number = 30 . Since atomic number = 30 is for Zinc atom , so when ⁶⁴ Cu₂₉ absorb one positron it produces ⁶⁴ Zn ₃₀ as resulting atom . The reaction can be written as:

⁶⁴ Cu₂₉ + ⁰e₊₁ → ⁶⁴ Zn ₃₀

The resulting atom from a nuclide which absorbs a positron is ⁶⁴ Zn ₃₀ .

The atomic number of copper is 29

The atomic number of zinc is 30

In the reaction: the positron is ⁰e₊₁ particle. The mass number remains the same the moment it is absorbed when the atomic number increases ⁶⁴ Cu₂₉

So when it will absorb one positron the atomic number will increase by 1 that is atomic number = 30 .

Recall:

The atomic number of zinc is 30

so when ⁶⁴ Cu₂₉ absorb one positron it produces ⁶⁴ Zn ₃₀ as resulting atom .

The chemical reaction is given below:

⁶⁴ Cu₂₉ + ⁰e₊₁ → ⁶⁴ Zn ₃₀

A chemical reaction simply refers to a process whereby one or more substances are converted to one or more different substances. In orders words, they are reactions in which reactants are concerted to produce products

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answer : (a) volume of the gas = 8.67 ×   l

                (b) second virial coefficient b = -1.21226 l/mole

solution :   given,     t = 300k

                                p = 20atm

                                z = 0.86

                                n = 8.2 mmoles = 8.2 × moles

                                r =   0.082 l atm/k/mol

        find,     (a) volume of gas   and (b) second virial coefficient b at 300k.

formula used :            

                          and            

(a)            

                    = \times 0.082\times 300}{20}[/tex]

                    = 8.67 ×   l

(b)      

                    = (0.00867-1) × 8.659

                    = - 8.5839 l/mole

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.