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ivanzaharov [21]
3 years ago
6

Which one of the following is a pure substance? A. Sea water B. sodium C. smoke and D. Soft drink​

Chemistry
2 answers:
Vitek1552 [10]3 years ago
6 0
The answer is B...............
baherus [9]3 years ago
3 0

Answer:

B. Sodium

Explanation:

The composition of sea water, smoke, and soft drinks are not consistent, and you can separate the parts that make up each. Sodium has a definite and consistent composition, so it is a pure substance.

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3 years ago
How many grams of carbon is needed to react with hydrogen gas to produce 59.8 grams of acetylene (C2H2)?
Bad White [126]

Answer:

55.1657 grams/mol of carbon is needed to react with hydrogen gas to produce 59.8 grams of acetylene (C2H2)

Explanation:

The molecular weight of acetylene is  26.04 g/mol

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Two carbon atom produces one acetylene molecule.

Thus, 2 * 12.011 g/mol of carbon is used to produce  26.04 g/mol of acetylene,

Amount of carbon required to produce 59.8 grams of acetylene

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55.1657 grams/mol of carbon is needed to react with hydrogen gas to produce 59.8 grams of acetylene (C2H2)

5 0
3 years ago
PLEASE ANSWER QUICKLY!!!in an ionic compound , which ions are attracted to each other?
Sauron [17]

Answer:

Oppositely charged ions attract each others i.e, positive and negative ions

Explanation:

Ionic Compound:

Ionic compounds consist have ionic bonds. It is the bond which is formed by the transfer of electron from one atom to the atom of another element.  

Both bonded atoms have very large electronegativity difference.

The atom with large electronegativity value accept the electron from other with smaller value of electronegativity.

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.  Sodium have one valance electron while chlorine have 7 valance electrons. In order to complete the octet chlorine require one electron while sodium need to lose its one electrons. That's why when both atom combine sodium lose its electron and becomes positive ion i.e cation while chlorine accept its electron and becomes negative ion called anion and bond between them is ionic bond. The electrostatic forces created between both atoms.

6 0
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