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ella [17]
3 years ago
13

Scientists think the earth is approximately _____ years old.

Chemistry
2 answers:
gizmo_the_mogwai [7]3 years ago
5 0
Scientist thinks the earth is approximately 4 1/2 years old.

diamong [38]3 years ago
4 0

Answer is 4 ½ billion.

Scientists think the earth's age is 4 ½ billion. This calculation is based on the radioactive dating. Since the formation of the earth, the time period has been divided into 3 major geological time periods as eon. They are phanerozoic, proterozoic and archean.

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Which compound has the same empirical and molecular formula ethyne ethene ethane methane?
Margaret [11]
Empirical formula is the simplest ratio of whole numbers of components in a compound 
molecular formula is the actual ratio of components in a compound .
the molecular formula for the compounds given are as follows
ethyne  - C₂H₂
ethene - C₂H₄
ethane - C₂H₆
methane - CH₄
the actual ratios of the elements                 simplified ratio
                     C : H                                           C : H
ethyne            2:2                                             1:1
ethene            2:4                                             1:2
ethane            2:6                                             1:3
methane         1:4                                             1:4
the only compound where the actual ratio is equal to the simplified ratio is methane 
therefore in methane molecular formula CH₄ is the same as empirical formula CH₄
6 0
3 years ago
Os-191 undergoes beta decay. What would be one of the products of this reaction?
alexdok [17]

Answer:

It emits a beta particle in its nuclear decay. What is the product of the reaction that forms in 4.9 minutes? A) 1910s. 191. B) 191W. B + 191. 76. Os remember

Explanation:

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1 year ago
Why do gas molecules move at different speeds at a given temperature?
Gwar [14]

Answer:

Gas molecules move at different speed at a given temputure bc as temp increases they move faster

Explanation:

they move faster bc they gain kinetetic energy

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What is the flow rate? How is it measured ?
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