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adell [148]
3 years ago
6

O que sao ligações de hidrogênio?

Chemistry
1 answer:
jeka57 [31]3 years ago
3 0
Ligações de hidrogênio resultam quando o hidrogênio está covalentemente ligado a um elemento fortemente eletronegativo, ou seja,
F
,
O
,
N
.
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4 years ago
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If we start with 8000 atoms of radium-226 how much would remain after 3200 years?
olya-2409 [2.1K]
<h3>Answer:</h3>

2000 atoms

<h3>Explanation:</h3>

We are given the following;

Initial number of atoms of radium-226 as 8000 atoms

Time taken for the decay 3200 years

We are required to determine the number of atoms that will remain after 3200 years.

We need to know the half life of Radium

  • Half life is the time taken by a radio active material to decay by half of its initial amount.
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Remaining amount = Original amount × 0.5^n

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 = 2

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6 0
3 years ago
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