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3 years ago

A solid element or compound that is found in nature

1 answer:

7 0

Salt, because from the ocean there can be salt depoists. Dimonds are tons of carbon atom under high pressure so that can count.

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Kidneys help regulate the concentration of which substance in the blood?

krek1111 [17]

Bicarbonate, sodium, potassium
are regulated by the kidneys.

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3 years ago

What organism is penicillin derived from ?

Anit [1.1K]

Answer: Penicillin G (also called benzylpenicillin) was discovered by accident in 1928. Alexander Fleming, a Scottish physician-scientist was growing a type of bacteria called Staphylococcus Aureus on an uncovered petri dish when it became contaminated with mold spores.

Explanation:

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4 years ago

Read 2 more answers

This question is for science. which options describes the particles of water as liquid water actively boils to become steam?

-BARSIC- [3]

Answer:

The correct option is;

a. The particles will gain a large amount of kinetic energy

Explanation:

As the water temperature reaches 100°C, which is the boiling point for water at atmospheric pressure, the continued heating is then used to break up the strong inter molecular forces between molecules of the water such that the individual molecules are free to move about and due to the high temperature, have gained considerable amount of kinetic energy for the to rise to appreciable height and to also spread.

The heat which converts water into steam is called latent heat as during the boiling phase, the temperature of the water remains constant.

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3 years ago

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Consider the following three-step mechanism for a reaction: Cl2(g)⇌2Cl(g)Fast Cl(g)+CHCl3(g)→HCl(g)+CCl3(g)Slow Cl(g)+CCl3(g)→CC

kupik [55]

Following steps are involved in the reaction

Step 1: Cl2(g)⇌2Cl(g)

Step 2: Cl(g)+CHCl3(g)→HCl(g)+CCl3(g)

Step 3: Cl(g)+CCl3(g)→CCl4(g)
......................................................................................................
Overall reaction : Cl2(g) + CHCl3(g) → HCl(g) + CCl4(g)

Note: Overall reaction is obtained by adding step 1-3 and canceling common terms that are present on reactant and product sides.

8 0

4 years ago

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Draw a Lewis structure for C2H3Cl. Show all unshared electron pairs. None of the atoms bears a formal charge, and all atoms have

aleksklad [387]

Answer:

See picture below

Explanation:

To do this, we first need to know how are the bonds in this molecule are. To do so, let's calculate the number of insaturations in the molecule:

n°I = C+1 - (H-N+X)/2

These numbers indicate if the molecule has double bond, triple bond, ring, cyclo, among other options:

n°I = 3 - (3+1)/2

n°I = 1

As it's a very small molecule, we can assume this molecule only have a double bond, and it's an alkene.

So the lewis structure, shows the electrons and the bonding, and also shows the unshared electron pairs, depending on how much electron have each molecule.

In the case of carbon:

[C] = [He] 2s2 2p2 ----> 4 electrons

[H] = 1s1 ----> 1 electron

[Cl] = [Ne] 3s2 3p5 ----> 7 electrons.

Therefore, we also know that Carbon has a double bond, so, the main molecule would have something like this:

C = C

so next to the carbons, we can put two hydrogens and in the other carbon, the chlorine and the remaining hydrogen.

See picture below for structure:

7 0

3 years ago