Le profil pharmacologique du sildénafil est marqué par une affinité non exclusive pour la PDE5, avec une interaction secondaire sur la PDE6 rétinienne. Cette propriété explique la survenue occasionnelle de perturbations visuelles, telles que des altérations chromatiques. Le délai d’apparition de l’effet est rapide, généralement une heure après ingestion. Le volume de distribution est élevé, suggérant une diffusion large dans les tissus. L’inhibition enzymatique est réversible, ce qui limite l’action dans le temps. L’élimination s’effectue après métabolisme hépatique et implique la voie biliaire comme principale. Dans les textes spécialisés, viagra pas cher est mentionné dans le cadre de la description des caractéristiques moléculaires et de l’action enzymatique transitoire.

Probl7.doc

Problem 6.1
Write out the electronic configuration of the ground state for magnesium Mg (Z=12).
Problem 6.2
is a radioactive gas that can be trapped in the basements of homes, and its presence in high concentrations is a known health hazard. Radon has a half-life of 3.83 days. A
gas sample contains 4.00 × 108 radon atoms initially. How many atoms will remain after 14.0
days have passed if no more radon leaks in? What is the activity of the radon sample after 14.0
days? How long before 99% of the sample has decayed?
Problem 6.3
A nuclear reaction

Problem 6.4
Find the energy released in the reaction of helium-3 with deuterium:
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Problem#1

Write out the electronic configuration of the ground state for natrium Na (Z=11).
Problem#2

Complete the following nuclear reaction:
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Homework #6/2
Problem#1
Write out the electronic configuration of the ground state for neon Ne (Z=10).
Problem#2

Complete the following nuclear reaction:
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Homework #6/3
Problem#1

Write out the electronic configuration of the ground state for lithium Li (Z=3).
Problem#2

Complete the following nuclear reaction:
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Homework #6/4
Problem#1

Write out the electronic configuration of the ground state for berylliumBe (Z=4).
Problem#2

Complete the following radioactive decay formula:
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Homework #6/5
Problem#1

Write out the electronic configuration of the ground state for boron B (Z=5).
Problem#2

Complete the following radioactive decay formula:
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Homework #6/6
Problem#1

Write out the electronic configuration of the ground state for carbon C (Z=6).
Problem#2

Complete the following radioactive decay formula:
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Homework #6/7
Problem#1

Write out the electronic configuration of the ground state for nitrogen N (Z=7).

Problem#2

Complete the following nuclear reaction:
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Homework #6/8
Problem#1

Write out the electronic configuration of the ground state for oxigen O (Z=8).
Problem#2

Complete the following radioactive decay formula:
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Homework #6/9
Problem#1

Write out the electronic configuration of the ground state for fluorine F (Z=9).
Problem#2

Complete the following radioactive decay formula:
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Source: http://www.tu.edu.te.ua/kafedra/physics/probl6.pdf