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-

.

Na2411.

-1

Na2411 Mg24

12.

1.1-.

(0, 5)

1.-

3t= 15h .

-

.

t0

= 0

V0= 5,00 mL 3 C0= 10-3mol.L-1.

.1-

n1

Na2411

t1= 3h

. .-

t1.

(NA= 6,02.1023 mol-1)(0,25)

.-

t1= 3hV2= 2,00 mL

n2= 2,1.10-9

mol

3.

Vp 5,00 L

. ((0, 5

.13 13

.

:

.1

C14

6

13 .

1.1 .C146

XA

Z.

.1 .MeVE.

2 .14

.

ta = 21,8 Bq .

a0= 28,7 Bq.

1. . 1317jours10.39,3 .

..(jours).

. .222

Be-B-N-O 4578

13:

ans5600t 2/1 1 an = 365 j1u = 931,5 MeV.c

-2

m( C146

) = 14,0111u :( C146

)

m(e

-

) = 0,00055u

:

m )X(AZ = 14,0076u : )X(AZ

3:

4:

.2me bac SP

2008:2

2008

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4:

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:4 2012

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.235 1

4

.4

Ce

Zr:

eynxZrCenU 011

0

91

40

142

58

1

0

235

92 ..

1.1

1. xy.

1. Mev

4.1.3

Mev

1g

4

.4

.

.

-1 .ZA

2-

:

VeM.3-

0=1tj90=2t:

a1=1,26.1021Bqa2=8.10

20Bq

-1- t1/2

--N

2t.

-3-3

m()= 4,0026um( =205,9935um(

=210,0008u

1u=1,6610- Kg=931,5MeV/C ;mp=1,00727umn=1,008665u

18.10223MW .

.

4:

.2me bac SP

:5

:6

:7

2010/2011

2010/2011

2009/2010

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3:

.2me bac SP

:8

:9

2010

2009/2010

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3:

.2me bac SP

2009/2010:10