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nirvana33 [79]
3 years ago
10

Can someone help me

Chemistry
2 answers:
Natalka [10]3 years ago
8 0
#2. 4.6 billion years
wel3 years ago
5 0
I believe # 1 is an era and # 2 4.6 billion
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According to the Lewis model of acids and bases, amines behave as bases in water because __________. View Available Hint(s) Acco
lyudmila [28]

Answer: the unshared pair of electrons on the nitrogen can accept a proton

Explanation:

According to the Lewis concept, an acid is defined as a substance that accepts electron pairs and base is defined as a substance which donates electron pairs.

Amines have a general molecular formula of RNH_2 which has lone pair of electrons on nitrogen and thus is able to donate electrons to a lewis acid which is short of electrons. In other words nitrogen can accept a proton.

RNH_2+H^+\rightarrow RNH_3^+

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Draw the structure of triethylamine, which has the formula n(c2h5)3.
NARA [144]
I hope this is right

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Describe the appearance of the material. Include its color and state (solid or liquid). Pour ¼ cup of water into a small, clear
Alex777 [14]

<u>Answer:</u>

<em>Here the given material is taken and mixed with water.</em>

<u>Explanation:</u>

The amount of material and water taken are same. Hence if it is not soluble in water it should make a dense and flowy paste like material and if it is soluble in water it should this and thicker density of water should remain.

If the amount of water that we are taking is more than the material will float in water if it is not soluble and lighter than water or would sink if it is heavier than water.

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Is it likely that an atom of Te would substitute for an atom of O in a solid compound? yes no indeterminate
PolarNik [594]

Answer:

The correct answer is no.

Explanation:

Tellurium is a chemical element denoted by Te and having atomic number 52. It is mildly toxic, brittle, silver-white, and rare metalloid. The element is chemically related to sulfur and selenium, all three of which are chalcogens.  

Oxygen is a chemical element, that is, a substance, which comprises only one kind of atom. Its official chemical symbol is O and exhibits an atomic number 8, this signifies that an atom of oxygen possesses eight protons in its nucleus. In the given question, it is not likely that tellurium would replace for oxygen, as the two elements are highly unlike.  

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