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nordsb [41]
3 years ago
6

The geological era about which we have the least information is called _____.

Chemistry
2 answers:
snow_lady [41]3 years ago
7 0

Answer:

<u>Hadean</u>

Explanation:

  • This a geologic eon period on earth dating to archean it begins with the formation of the planet about some 4.6 billion years ago. As data of 2016 ICS <u>International commission on Stratigraphy describes its status as "informal". </u>
  • As geologist Preston cloud named this eon in 1972, before the earliest known rock formations on earth. Also called as the Priscoan period" or ancient rock period. Word Hadean also signified the Greek god of the underworld.
  • The geologists believe that a sizeable quantity of water could have been the prime source of earth and that water molecules would have escaped due absence of earth gravity. It also asserted that the parts of the earth might have been disrupted due to the formation of the moon.
iVinArrow [24]3 years ago
4 0
Cretaceous Period.............

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Answer : Option A) the arrangement of bonded atoms.


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12. A voltaic cell consists of a chromium electrode dipped in a 1.20 M chromium (III) nitrate
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For a voltaic cell consisting of chromium, an electrode dipped in a 1.20 M chromium (III) nitrate solution and a tin electrode dipped in a 0.400 M tin (II) nitrate solution, the cell potential at 298 K  is mathematically given as

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<h3 /><h3>What is the cell potential at 298 K?</h3>

Generally, the equation for the Oxidation and Reduction  is mathematically given as

Cr(s) ------------------ Cr+3(aq) + 3e- ] x 2 ...O

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brainly.com/question/13439286

5 0
2 years ago
How many moles are present in
olasank [31]

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(b) There are 2 moles present in 12.044 \times 10^{23} particles of oxygen.

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As the molar mass of N_{2} is 28 g/mol so its number of moles are calculated as follows.

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Moles = \frac{12.044 \times 10^{23}}{6.022 \times 10^{23}}\\= 2 mol

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