Muaj pes tsawg atoms nyob rau hauv ib gram ntawm uranium?
Muaj pes tsawg atoms nyob rau hauv ib gram ntawm uranium?

Video: Muaj pes tsawg atoms nyob rau hauv ib gram ntawm uranium?

Video: Muaj pes tsawg atoms nyob rau hauv ib gram ntawm uranium?
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Yeej koj faib Avogadro tas li los ntawm atomic loj ntawm lub caij mus nrhiav tus naj npawb ntawm atoms ntawm cov khoom ntawd hauv ib qho grams . Yog li Uranium -235 muaj 6.02214179 × 1023 / 235 = 2.5626135 × 1021 atoms rau grams.

Tsis tas li ntawd, pes tsawg grams nyob rau hauv ib mole ntawm uranium atoms?

2 38,03g

Ib sab saum toj no, pes tsawg moles nyob hauv 119 grams ntawm uranium? SI base unit rau tus nqi ntawm cov khoom yog mole. 1 mole yog sib npaug 1 moles Uranium, los yog 238.02891 grams.

Hais txog qhov no, koj muaj pes tsawg uranium atoms?

A atom ntawm uranium muaj 92 protons thiab 92 electrons, ntawm uas 6 yog valence electrons. Uranium yog tsis muaj zog radioactive vim hais tias tag nrho cov isotopes ntawm uranium yog tsis ruaj khov; lub neej ib nrab ntawm nws cov isotopes tshwm sim nyob nruab nrab ntawm 159, 200 xyoo thiab 4.5 billion xyoo.

Dab tsi yog uranium hloov mus rau?

Uranium -238, cov uranium feem ntau cov isotope, ua tau ua hloov mus rau hauv plutonium-239, fissionable khoom uas ua tau kuj tseem siv tau los ua roj hauv nuclear reactors. Uranium -239 daim ntawv thaum uranium -238 absorbs ib neutron. Uranium -239 muaj ib nrab neej ntawm 23 feeb thiab lwj rau hauv Neptunium-239 los ntawm beta lwj.

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