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zloy xaker [14]
3 years ago
14

Why do atoms go through radioactive decay?

Chemistry
1 answer:
Alecsey [184]3 years ago
8 0
They go through radioactive decay because when atoms are unstable by going through it they are emitting radiation in natural process and they gain stability by losing energy.
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The mass of an object is described in ________. a.meters b.cubic meters c.liters d.grams
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The mass of an object is describes in D. Grams.
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3 years ago
Que. 1. Gallium has 2 naturally occuring Isotopes with mass numbers 69 & 71 respectively. What is the percentage abundance o
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Isotopes are atoms of the same element that have different masses. The relative atomic mass (am) is a weighted average that takes into account the abundance of each isotope. We can calculate the relative atomic mass using the following expression.

am = \frac{\Sigma m_i  \times ab_i}{100}

where,

  • mi: mass of each isotope
  • abi: percent abundance of each isotope

For Gallium,

70.59 amu = \frac{69 amu\ x + 71 amu\ y}{100}     [1]

where "x" and "y" are the unknown abundances.

We also know that the sum of both abundances must be 100%.

x + y = 100

y = 100 - x   [2]

If we replace [2] in [1], we get

70.59 amu = \frac{69 amu\ x + 71 amu\ (100-x)}{100} \\7059 amu = -2 amu\ x + 7100amu \\x = 20.5

Then, in [2]

y = 100 - x = 100 - 20.5 = 79.5

In conclusion, Ga-69 has an abundance of 20.5% and Ga-71 has an abundance of 79.5%.

You can learn more about isotopes in: brainly.com/question/21536220?referrer=searchResults

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Which is a FALSE statement about elements?
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C. Not each element has a known neutron number
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How do ethical concerns affect scientific research
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Answer:

Ethical concerns affect scientific research by adding boundaries to what can and cant be experimented on. An example is that its socially unacceptable to experiment on humans because its considered wrong and horrific, even at the expense of learning more about human nature and/or the human body.

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NaOH; sodium hydroxideExplanation:

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