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Aleks [24]
3 years ago
8

Why is the periodic table considered an important tool in chemistry?​

Chemistry
2 answers:
Svetllana [295]3 years ago
8 0

Answer:

The periodic table is a handy tool that categorizes a large amount of information that makes it easier for scients to see and understand. The way the periodic table is constructed is extremely important. It is easy for scientists and other people to predict and learn about the characteristics thanks to it's organized layout.

GenaCL600 [577]3 years ago
6 0
Because chemistry is all about combing different substances and substances are elements and compounds. The periodic table list all the elements and compounds for us. Therefor we can make different substances. The periodic table just make it easier.
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Maksim231197 [3]
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5 0
3 years ago
if you take 2.0mL of a 7.0 ppm NaOH solution and dilute it to 250.0mL, calculate the final concentration in ppm.
Oduvanchick [21]

Answer:

C₂ = 0.056 ppm

Explanation:

Given data:

Initial volume = 2.0 mL

Initial concentration = 7.0 ppm

Final volume = 250.0 mL

Final concentration = ?

Solution:

Formula:

C₁V₁ = C₂V₂

C₁ = Initial concentration

V₁ = Initial volume

C₂ = Final concentration

V₂ = Final volume

Now we will put the values in formula.

C₁V₁ = C₂V₂

7.0 ppm × 2.0 mL = C₂ × 250.0 mL

C₂ = 14.0 ppm.mL /250.0 mL

C₂ = 0.056 ppm

4 0
3 years ago
John's class is doing an experiment that involves mice. The mice are kept in a large, clean cage, and John gives them water and
Sphinxa [80]
The unethical part about the mice's treatment is that John's classmates are taping on the glass and teasing the mice.
5 0
4 years ago
There are ________ σ bonds and ________ π bonds in h3c-ch2-ch=ch-ch2-c≡ch.
FrozenT [24]
The number of sigma and pi bonds are,

          Sigma Bonds  =  16

          Pi Bonds         =   3

Explanation:
                   Every first bond formed between two atoms is sigma. Pi bond is formed when already a sigma bond is there. While in case of Alkyne (triple Bond) there is one sigma and one pi bond already present, so the third bond is formed by second side-to-side overlap of orbitals, hence, a second pi bond is formed.
Below all black bonds are sigma bonds, while in alkene there is one pi bond and in alkyne there are two pi bonds.

6 0
3 years ago
There are several aromatic compounds with the formula c8h9cl. Draw those that have a monosubstituted ring.
anygoal [31]

Answer:

As shown in the attachment.

Explanation:

In this case, there are two isomers possible. Isomers are compounds that have the same molecular formular but different structural formular.

Considering the hydrocarbon C8H10, which has 8C expected saturated hydrocarbon. however when there is an excess of 8H, we have C8H18 which is the formular of octane, a member of the alkane family and from monosubstitution reaction which involves reaction with halogens (particularly Chlorine), the reaction will be a repeated substitution reaction where chlorine will be replaced with each of the hydrogen.

8 0
4 years ago
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