6. Calculate AE, in joules, for the reaction of one nucleus of polonium-210: 21084Po +2 'on...

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6. Calculate AE, in joules, for the reaction of one nucleus of polonium-210: 21084Po +2 on → 20882Pb + 42 He 7. A sample con

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Answer 1

Answer #1

7.

As we know the half life of the sample Iodine 153- 8 days

we can use , this formula

N(t)=N_o(1/2)^t/t/2

i.e..

N(t)=4.6(1/2)^3/8

=4.6(0.5)^0.375

=3.54 mg

N(t) is the quantity that is still ramain after time t and that is 3.54 mg

where,

N₀ - initial quantity of the substance that will decay

N(t) - quantity remains and not yet decayed time t

6.

Datas given is inadequate and more information is needed to answer this

Change in E= q+W

According to first law of thermodynamics

q- heat supplied

W- work done

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Answer 2

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