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KonstantinChe [14]
3 years ago
15

explain why metals are good thermal conductors and fluids are poor conductors of heat using the particle model theory of matter.

Chemistry
2 answers:
fenix001 [56]3 years ago
8 0

Answer:

Metals are an excellent electricity and heat conductor because the metal atoms form a matrix through which the outer electrons can move freely. Instead of orbiting their respective atoms they form a sea of electrons surrounding the positive nuclei of the metal ions that interact.

The force between adjacent particles is strong, making heat transfer by collision the most efficient. The particles in liquid can move around within it, which means that the force between particles is not as strong (Fig. 5b). Thus liquids are usually poor conductors of heat.

ratelena [41]3 years ago
3 0

The reason is because Metals are strong metallic and they make good conductors for electric and heat. While fluids are non metals so they don't produce heat and most of the non metals are brittle and poor conductors.

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0.0000062 kg in scientific notation
slava [35]

Answer:

6.2 x 10^{-6}

Explanation:

You are moving the decimal point six spots to the right.

8 0
2 years ago
Magnesium (used in the manufacture of light alloys) reacts with iron(III) chloride to form magnesium chloride and iron. 3Mg(s) +
Paladinen [302]

Answer:

Theanswer to your question is:

Limiting reactant = FeCl₃

Excess reactant = 1.66 g of Mg

Explanation:

Data

Mg = 41 g   = 24.31 g/mol

FeCl₃ = 175 g = 162.2 g/mol

                         3Mg(s) + 2FeCl₃(s) → 3MgCl₂(s) + 2Fe(s)

                      3(24.31) of Mg ------------------  2(162.2)  of FeCl₃

                      72.93 g of Mg ------------------ 324.4 g of FeCl₃

Theoretical Proportion = 324.4/72.93 = 4.44

Practical proportion   =  175 / 41 = 4.2

As the proportion disminishes the limiting reactant is FeCl₃.

Excess reactant

                               72.93 g of Mg ------------------ 324.4 g of FeCl₃

                                   x -------------------------           175 g of FeCl₃

x = (175 x 72.93) / 324.4

x = 39.34 g of Mg

Excess = 41 - 39.34

           = 1.66 g of Mg

4 0
3 years ago
A rock that has a mass if 180 grams dropped in a graduated cylinder that was originally filled to 52ml; it now reads 62ml. What
Vlad [161]

Answer:

<h2>18 g/mL</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

volume = final volume of water - initial volume of water

volume = 62 - 52 = 10 mL

From the question we have

density =  \frac{180}{10}  \\

We have the final answer as

<h3>18 g/mL</h3>

Hope this helps you

5 0
3 years ago
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Answer:

Obtain the conversion factor by dividing the required yield (from Step 2) by the old yield (from Step 1). That is, conversion factor = (required yield)/(recipe yield) or conversion factor = what you NEED ÷ what you HAVE.

Explanation:

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3 years ago
What is the chemical fluoride for carbon tetrafluoride?
amid [387]

The chemical formula for carbon tetrafluoride is CF4

6 0
3 years ago
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