Answer:
The statement which describes an intensive property of matter is - :
<u>it is the same for every sample of a single substance.</u>
Explanation:
- <u>It is the same for every sample of a single substance. -:</u> Since a substance 's intense property does not depend on either mass or volume, it is the same for each sample of a single substance. <u>Hence , this statement is correct .</u>
- <u>It depends on how a substance was formed -:</u> Intensive property do not depend upon the amount of the substance or the formation of the sample . <u>Therefore this statement ifs wrong about intensive property .</u>
- <u>It is the same for every sample of every substances -: </u> This is not possible to be for every sample of the substance , a every substance have different qualities. <u>Hence this statement is also incorrect.</u>
- <u>it depends on the amount of substances present -: </u> This is the characteristic of a extensive property of matter that relies on the amount of the material/substance.<u> This assertion is, therefore, not valid.</u>
Hence ,<u> the correct option is A (it is the same for every sample of a single substance).</u>
Answer:
Spraying perfume in one corner of the room and the smell travels to the other side of the room
Explanation:
Answer:
1: Negative ions, by gaining electrons to fill the valence shell
Explanation:
Nonmetals gain the electron to complete the octet and form anion. Consider the example of halogen.
When it combine with metals it gain the electron from the metal and form anion.
For example:
Sodium chloride is ionic compound. The electronegativity of chlorine is 3.16 and for sodium is 0.93. There is large difference is present. That's why electron from sodium is transfer to the chlorine. Sodium becomes positive and chlorine becomes negative ion. The electrostatic forces develop between bonded atoms.
Since there are given data of two reagents, we need to obtain which of reagents are surplus.
0.3618 mol C4H4 - x mol O2
1 mol C4H4 - 5 mol O2
that means that there are too much O2 gas (by 0.009 mol)
so we continue counting using C4H4 data
0.3618 mol C4H4 - x mol H2O
1 mol C4H4 - 2 mol H2O
Mw(H2O)=2×1+16=18 g/mol
n=m/Mw
m=n×Mw
answer:13.0248 grams of H2O