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Nata [24]
3 years ago
13

Which are examples of conserving? Choose the two correct answers.

Chemistry
2 answers:
bija089 [108]3 years ago
8 0
C and D. Conserving plastic through the three R’s, and reducing production of new materials by Reusing old ones
SashulF [63]3 years ago
3 0

Answer:

B)

Explanati on:

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What is precipitate ​
natima [27]

Answer:

cause something (a substance) to be deposited in solid form from a solution

Explanation:

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2 years ago
What patterns in the rock layer fossils helped you identify an extinction?
Dafna11 [192]
Often, the rock layers bookending the mass extinction are noticeably different in their compositions. These changes in the rocks show the effects of environmental disturbances that triggered the mass extinction and sometimes hint at the catastrophic cause of the extinction
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On the periodic table, the average atomic mass for carbon is 12.01 g. Why is it not exactly 12.00?
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The average the natural abundances of the various isotopes of carbon to arrive at the fractional mass.

5 0
2 years ago
The alkali metals play virtually the same general chemical role in all their reactions. (b) How is it based on atomic properties
vfiekz [6]

b) It is based on atomic properties as alkali metals requires 7 more electrons to complete their outer orbit. And they try to give those electrons to other elements to obtain noble gas configuration.

Noble gases are the gases which do not react easily with anything. They are also called as Inert gases, and belongs to group 18 of the periodic table.

Alkali metals are the substances which are found in Group I of a periodic table. Mostly the elements which are present are:

  • Lithium (Li)
  • Sodium (Na)
  • Potassium (K)
  • Rubidium (Rb)
  • Cesium (Cs)
  • Francium (Fr)

Properties of alkali metals are:  Soft, shiny reactive metals. They are soft enough to cut with knife. Metals react with water and air quickly and gets tarnish, so pure metals are stored in container by dipping them in oil to prevent oxidation.

To know more about Alkali metals, refer to this link:

brainly.com/question/18153051

#SPJ4

6 0
1 year ago
What is true about tRNA's: O they vary widely in size O they can covalently bond to more than one type of amino acid 0 they do n
Gekata [30.6K]

Answer:

Option (3).

Explanation:

Transfer RNA or t RNA's is one of the type of the RNA molecule necessary for the synthesis of protein translation. This RNA works as a adaptor molecule and contains 70 to 90 nucleotide in length.

Transfer RNA contains an anti codon loop. This anti codon loop has the ability to recognize an mRNA codon and result in the formation of protein product.

Thus, the correct answer is option (3).

8 0
3 years ago
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