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azamat
4 years ago
4

Which statement best describes a mole?

Chemistry
2 answers:
UkoKoshka [18]4 years ago
6 0
<span>It contains 6.02mc001-2.jpg particles of a given substance is the answer. A mole is simply a unit of measurement. Units are invented when existing units are inadequate. Chemical reactions often take place at levels where using grams wouldn't make sense, yet using absolute numbers of atoms/molecules/ions would be confusing. </span>
Karolina [17]4 years ago
4 0

Answer : The correct option is, It contains 6.02\times 10^{23} particles of a given substance.

Explanation :

According to the mole concept, one mole of a substance contains 6.02\times 10^{23} number of particles of a given substance.

For example :

1 mole of oxygen (O) contains 6.02\times 10^{23} number of oxygen atoms

1 mole of oxygen (O_2) contains 2\times 6.02\times 10^{23} number of oxygen atoms

Hence, the correct option is, It contains 6.02\times 10^{23} particles of a given substance.

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On the basis of your knowledge of the reaction of halogens with alkanes, decide which product you would not expect to be formed
KIM [24]

Answer:

On the basis of your knowledge of the reaction of halogens with alkanes, decide which product you would not expect to be formed in even small quantities in the bromination of ethane?

A) BrCH2CH2Br

B) CH3CH2CH2Br

C) CH3CHBr2

D) CH3CH2CH2CH3

E) BrCH2CH2CH2CH2Br

Explanation:

The reaction of ethane with bromine in presence of UV light forms mono substituted ethane at all primary and secondary carbons.

This is an example of free radical substitution.

The structure of ethane and its bromination is shown below:

Among the given options that which is not possible to form is option B) that is CH3CH2CH2Br(propyl bromide).

Remaining all other products are possisble to form on free radical substitution of ethane.

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3 years ago
Chemistry : the atomic number of an element is 73. Is this paramagnetic or diamagnetic? :) ...?
Finger [1]
<span>Paramagnetic, an easy way to check is to see if it is the last element within the orbital and you can do that simply by looking at the periodic table. The s orbital has two, the p has 6 so on and so forth. Some elements are considered diamagnetic if they are almost completely full. </span>
5 0
3 years ago
Read 2 more answers
Maybe someone knows how to name compounds by IUPAC ? ​
xxTIMURxx [149]

Explanation:

The IUPAC system of nomenclature aims to ensure

that every organic compound has a unique, unambiguous name.that the IUPAC name of any compound conveys the structure of that compound to a person familiar with the system.

One way of checking whether the name you have given to an alkane is reasonable is to count the number of carbon atoms implied by the chosen name. For example, if you named a compound 3‑ethyl-4‑methylheptane, you have indicated that the compound contains a total of 10 carbon atoms—seven carbon atoms in the main chain, two carbon atoms in an ethyl group, and one carbon atom in a methyl group. If you were to check the given structure and find 11 carbon atoms, you would know that you had made a mistake. Perhaps the name you should have written was 3‑ethyl-4,4‑dimethylheptane!

6 0
3 years ago
A dead fish has washed up on the beach and is starting to decay. Which compound produces the unpleasant odor from the decaying f
finlep [7]
The correct option in here is the first one: <span>pentane-1,5-diamine. This is also known as cadaverine. This is a common compund that produces that unpleasant odor from the fish. </span>
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3 years ago
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APE X What is happening to particles of matter while a change of state is taking place?
stealth61 [152]

Answer:

a. They are staying at the same speed

Explanation:

IF CORRECT PLSPLSPLS GIVE BRAINLIEST WOULD APPRECIATE :)

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