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ra1l [238]
3 years ago
6

5. The mass of cobalt-60 in a sample is found to have decreased from 0.800g to 0.200g in a

Chemistry
1 answer:
Ludmilka [50]3 years ago
6 0

Answer:

5.25yr

Explanation:

I think so

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Sound travels faster in high temperatures.:<br> True<br> False
fredd [130]
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The modern periodic table is arranged in order of increasing. true or false
qaws [65]

Answer:

Increasing atomic number - True

Explanation:

The modern table is based on Mendeleev’s table, except the modern table arranges the elements by increasing atomic number instead of atomic mass.

The Atomic number is the number of protons in an atom, and this number is unique for each element. For example, Hydrogen has an atomic number of 1, Calcium has an atomic number of 20.

In the modern periodic table the elements are further arranged into:

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4 0
3 years ago
A hydrocarbon of pentane has two isomeric forms—n-pentane and iso-pentane. The molecular formula of the n-pentane is C5H12. Pred
Monica [59]
An iso pentane is an isomeric form of n-pentane. Isomers have same molecular formula but differ in the atomic arragement projected in 3D and the arrangement of atoms primarily resulting to a different set of properties. In this case, isopentane also has a molecular formula of an alkane <span>C5H12</span>
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PLS HELP IT IS DUE TODAY IN 30 MINS PLS ANSWER 14 POINTS
Natali5045456 [20]

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gamma rays, X-rays, ultraviolet radiation, visible light, infrared radiation, and radio waves.

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