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kifflom [539]
3 years ago
9

What is the correct sequence of eras of the geologic time scale in order from oldest to youngest ?

Chemistry
2 answers:
drek231 [11]3 years ago
8 0

Answer:

Paleozoic, Mesozoic, and Cenozoic.

Explanation:

Earth's history is characterized by four eons; in order from oldest to youngest, these are ... Eras of the Phanerozoic: Paleozoic, Mesozoic, Cenozoic.

[PDF]Geological time with major evolutionary events in the fossil ...

https://www.aoml.noaa.gov › outreach › floridaseagrant › pdf_files › Trop...

https://www.digitalatlasofancientlife.org › learn › geological-time-scale

finlep [7]3 years ago
6 0

Answer:

it would be the 3rd

Explanation:

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What is the energy change if 84.0 g of calcium oxide (CaO) reacts with excess water in the following reaction?
pochemuha
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calculation
heat  =  number of moles  x  delta H

delta H = - 65.2  Kj/mol

first find the number of  moles  of  CaO reacted

moles = mass/molar mass
the molar mass  of CaO =  40 +  16=  56 g/mol
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moles therefore = 84 g/56 g/mol =1.5 moles

Heat is therefore =  1.5 moles  x -65.2 = - 97.8 Kj = -98 Kj

  since  sign is  negative  the   energy  is released 

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