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Andrej [43]
3 years ago
13

PLEASE HELP I WILL GIFT 100 POINTS!!!!!

Chemistry
2 answers:
gregori [183]3 years ago
8 0

Answer:

Liquid A

Explanation:

the least dense will be at the top. like icecubes in water. the ice is less dense than the water so it floats

Westkost [7]3 years ago
3 0

Answer:

Liquied A

Explanation:

It is at the top and it is the lightest if it is at the bottom then it has the most density

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1. Water is an amphoteric substance. In any sample of water some of the moles
umka2103 [35]

Answer:

2H₂O (l) ⇄ H₃O⁺ (aq)  +  OH⁻(aq)

Explanation:

The autoionization of water is defined as a chemical reaction where there is an equilibrium in which two water molecules react producing an hydronium ion and a hydroxide ion. This is also defined as the autoprotolysis of water, and is based on its amphoteric nature.

The substance that can donate protons as well as receive them is defined as amphoteric. In this way, the water behaves amphoteric as it donates a proton as an acid of Brownsted Lowry or if it receives a proton, being a base.

NH₃ + H₂O ⇄ NH₄ + OH⁻               Kb

In this case, water behaves as an acid, it donates the proton to ammonia (a base)

CH₃COOH + H₂O ⇄ CH₃COO⁻ + H₃O⁺              Ka

For this case, water behaves as a base, it recieves the proton from the acetic acid (acid)

4 0
3 years ago
Noble gas compounds like KrF, XeCl, and XeBr are used in excimer lasers. Draw an approximate molecular orbital diagram appropria
Aneli [31]

Answer:

Here's what I get.

Explanation:

The MO diagrams of KrBr, XeCl, and XeBr are shown below.

They are similar, except for the numbering of the valence shell orbitals.

Also, I have drawn the s and p orbitals at the same energy levels for both atoms in the compounds. That is obviously not the case.

However, the MO diagrams are approximately correct.

The ground state electron configuration of KrF is

(1\sigma_{g})^{2}\, (1\sigma_{u}^{*})^{2} \, (2\sigma_{g})^{2} \, (2\sigma_{u}^{*})^{2} \, (3\sigma_{g})^{2} \,  (1\pi_{u})^{4} \, (1\pi_{g}^{*})^{4} \, (3\sigma_{g}^{*})^{1}

KrF⁺ will have one less electron than KrF.

You remove the antibonding electron from the highest energy orbital, so the bond order increases.

The KrF bond will be stronger.

6 0
4 years ago
What is the relationship between a compound and the elements it is made from? (4 points)
Serggg [28]

Answer:

The compound may have properties that are very different from those of the elements.

Explanation:

For example - common salt, sodium chloride ( NaCl) has very different properties from sodium and chlorine

7 0
3 years ago
Economic geography deals with:
Rufina [12.5K]

Answer: Economic geography takes a variety of approaches to many different topics, including the location of industries, economies of agglomeration (also known as "linkages"), transportation, international trade, development, real estate, gentrification, ethnic economies, gendered economies, core-periphery theory, the economics of urban form, the relationship between the environment and the economy (tying into a long history of geographers studying culture-environment interaction), and globalization.

4 0
3 years ago
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Suppose you have 100 grams of a radioisotope with a half-life of 100 years. How much of the isotope will you have after 200 year
Ulleksa [173]
        Amount Remaining     Years       #half lives 
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             25g                            200               2                      




8 0
4 years ago
Read 2 more answers
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