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gizmo_the_mogwai [7]
3 years ago
10

Precambrian what did earth look like

Chemistry
1 answer:
Ratling [72]3 years ago
7 0
It was empty , dark , and cold

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Semmy [17]
Surface runoff, its quite obvious in the picture

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3 years ago
Anil accidentally swallows a substance that activates the complement cascade in the absence of bound antibodies. this substance
ale4655 [162]

Answer:

This substance would cause cause an extensive cellular damage to Anil.

5 0
1 year ago
Why is it not correct/precise to say "a molecule of salt?"
Fynjy0 [20]

It is not correct to say " a molecule of salt " because salt is a compound.

Explanation:

  • As we know a molecular bond is present in each molecule.
  • Salt (NaCl) is considered as a compound because it is made up of two types of elements that are sodium as well as chlorine.
  • On the other hand it is not considered as a molecule as it is not holding an ionic bond.
  • As a result we can name it as an ionic compound. Hence it is not considered as a molecule of salt.
4 0
3 years ago
10. The density of aluminum is 2.7 g/cm². A 27g piece of aluminum will have<br> what volume?
kotegsom [21]
27g x 1cm^2/2.7g = answer in cm^2
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3 0
2 years ago
Identify the acids and the bases in the chemical equation ​
agasfer [191]
<h3><u>Answer;</u></h3>

Acids;  HCl and HC5H5N+

Bases; C5H5N and Cl-

<h3><u>Explanation;</u></h3>
  • According to Bronsted-Lowry Theory an acid is a proton or hydrogen ion donor while a base is a proton or a hydrogen ion acceptor.
  • In this case,<u> both HCl and HC5H5N+ are acids</u> as <u>they are donors of hydrogen ions</u>. HCl is an acid to the forward reaction while HC5H5N+ is a acid to the reverse reaction.
  • On the other hand, <u>C5H5N and Cl- are bases</u>, <u>they are acceptors of hydrogen  ions</u>. Cl-  is a base in the reverse reaction while C5H5N is a base in the forward reaction.
8 0
3 years ago
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