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Misha Larkins [42]
3 years ago
15

Is calcium carbide ionic or covalent compound ?

Chemistry
2 answers:
kvv77 [185]3 years ago
6 0
CaC2

Ca - Group 2 metal
C - Group 4 non-metal

It is an ionic compound. :)

Explanation: Ionic compounds has a giant lattice structure with strong electrostatic forces of attraction between ions of Metal and Non-Metal. This compound require a large amount of energy/heat to overcome.

Covalent compounds has a simple molecular structure with weak intermolecular bonds with Non-metals only. This compound requires little energy/heat to overcome.
Anna007 [38]3 years ago
5 0
Calcium carbide is a covalent compound. 
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lina2011 [118]
Physical properties are those which can be observed without any change in composition of the substance. Hence, a is the answer.
8 0
3 years ago
An ideal gas contained in a piston-cylinder assembly is compressed isothermally in an internally reversible process.
Tju [1.3M]

Answer:

a) \Delta S

b) entropy of the sistem equal to a), entropy of the universe grater than a).

Explanation:

a) The change of entropy for a reversible process:

\delta S=\frac{\delta Q}{T}

\Delta S=\frac{Q}{T}

The energy balance:

\delta U=[tex]\delta Q- \delta W

If the process is isothermical the U doesn't change:

0=[tex]\delta Q- \delta W

\delta Q= \delta W

Q= W

The work:

W=\int_{V1}^{V2}P*dV

If it is an ideal gas:

P=\frac{n*R*T}{V}

W=\int_{V1}^{V2}\frac{n*R*T}{V}*dV

Solving:

W=n*R*T*ln(V2/V1)

Replacing:

\Delta S=\frac{n*R*T*ln(V2/V1)}{T}

\Delta S=n*R*ln(V2/V1)}

Given that it's a compression: V2<V1 and ln(V2/V1)<0. So:

\Delta S

b) The entropy change of the sistem will be equal to the calculated in a), but the change of entropy of the universe will be 0 in a) (reversible process) and in b) has to be positive given that it is an irreversible process.

7 0
3 years ago
This is for anyone who’s good with science coz I absolutely hate it. ILL BRAINLIST U AND GIVE U 5 STAR TO WHOEVER IS GOOD;) be s
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Answer:

A) Oxygen

B) Heat

C)

Explanation:

Hope it helps

4 0
2 years ago
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The intensity of a sound wave increases as the wave spreads out from the source of the sound
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Answer:

The more spread out their energy becomes

5 0
2 years ago
Which group, metals or nonmetals, has the greatest chance to gain electrons and to become negative ions?
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It would be non-metals
8 0
3 years ago
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