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scoray [572]
3 years ago
13

Read the list of substances. Wood, Copper, Iron, Foam Which substances are good conductors of heat?

Chemistry
2 answers:
PtichkaEL [24]3 years ago
8 0

Answer: Option (B) is the correct answer.

Explanation:

Good conductors are defined as the substance through which heat can effectively pass.

For example, copper, and iron are good conductors of heat and electricity.

Generally, metals are good conductors of heat as well as electricity.

On the other hand, bad conductors are the substances through which heat is unable to flow.

For example, glass, wood, foam etc are all bad conductors of heat as well as electricity.

Thus, we can conclude that out of the given options copper and iron are good conductors of heat.

Mashcka [7]3 years ago
5 0

Answer: Option (B) is the correct answer.

Explanation:

Metals are the substances that have more number of electrons. Metals are good conductors of heat and electricity.

For example, iron, copper, zinc are all metals and good conductors of heat and electricity.

Whereas wood and foam are is a poor conductor of heat and electricity.

Thus, we can conclude that out of the given options copper and iron are good conductors of heat.

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A and D

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3 0
2 years ago
Chlorine reacts with sodium and with hydrogen.
Sonbull [250]

Answer:

Sodium Chloride has Ionic bond while Hydrogen Chloride has covalent bond.

Explanation:

Na has 11 electrons (2, 8, 1) and need to give away 1 electron to be stable

Cl has 17 electrons ( 2, 8, 7) and needs 1 electron to be stable.

Na transfers 1 electron to CL to form Ionic bond.

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3 0
3 years ago
Pb(SO4)2 + 4 LiNO3 → Pb(NO3)4 + 2 Li2SO4
Anvisha [2.4K]

Answer:

4.5 moles of lithium sulfate are produced.

Explanation:

Given data:

Number of moles of lead sulfate = 2.25 mol

Number of moles of lithium nitrate = 9.62 mol

Number of moles of lithium sulfate = ?

Solution:

Chemical equation:

Pb(SO₄)₂ + 4LiNO₃      →     Pb(NO₃)₄ + 2Li₂SO₄

Now we will compare the moles of lithium sulfate with lead sulfate and lithium nitrate.

                       Pb(SO₄)₂        :         Li₂SO₄

                            1                :             2

                          2.25           :          2/1×2.25 = 4.5 mol

                       LiNO₃            :             Li₂SO₄

                           4                :                2

                           9.62           :             2/4×9.62 = 4.81 mol

Pb(SO₄)₂  produces less number of moles of Li₂SO₄ thus it will act as limiting reactant and limit the yield of  Li₂SO₄.      

7 0
2 years ago
15
damaskus [11]
Mostly in my opinion I think it’s the secound one
8 0
2 years ago
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