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3 years ago

Suggest one reason why cans are not made entirely from tin

1 answer:

5 0

Cans aren't entirely made of tin because of rusting. When scratched(which happens quite frequently to cans) the tin is in more danger of rusting. This is why the cans are coated in a layer of tin rather than the whole can is made of it.

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Why is graphite used instead of gold or copper wires to conduct electricity in very hot situations such as an industrial kiln?

olga2289 [7]

<span>The strong bonds give graphite high boiling and melting points, while the weak bonds make graphite soft and flexible.</span>

5 0

2 years ago

Read 2 more answers

What is displacement reaction

jenyasd209 [6]

A displacement reaction (also known as a replacement reaction) is when one element is replaced by another compound. Ex) Fe+CuSO4=FeSO+Cu

3 0

2 years ago

Read 2 more answers

Gaseous methane (CH4) will react with gaseous oxygen (O2) to produce gaseous carbon dioxide (CO) and gaseous water (H2O) . Suppo

Leto [7]

Answer:

0 g.

Explanation:

Hello,

In this case, since the reaction between methane and oxygen is:

$CH_4+2O_2\rightarrow CO_2+2H_2O$

If 0.963 g of methane react with 7.5 g of oxygen the first step is to identify the limiting reactant for which we compute the available moles of methane and the moles of methane consumed by the 7.5 g of oxygen:

$n_{CH_4}=0.963gCH_4*\frac{1molCH_4}{16gCH_4}=0.0602molCH_4\\ \\n_{CH_4}^{consumed}=7.5gO_2*\frac{1molO_2}{32gO_2}*\frac{1molCH_4}{2molO_2} =0.117molCH_4$

Thus, since oxygen theoretically consumes more methane than the available, we conclude the methane is the limiting reactant, for which it will be completely consumed, therefore, no remaining methane will be left over.

$left\ over=0g$

Regards.

7 0

2 years ago

Select the correct answer.

Minchanka [31]

Answer:

A. it is the lowest at low temperatures

Explanation:

It is true with respect to the kinetic energy of a molecule that the it is the lowest at low temperatures.

The kinetic energy of a molecule is the energy due to the motion of the particles within a substance.

Kinetic energy is directly proportional to the temperature of a substance.
The higher the temperature, the more the kinetic energy of the molecules within a system.
At low temperature, kinetic energy is the lowest.
At the highest temperature, kinetic energy is the highest

3 0

3 years ago

Read 2 more answers

Draw the Lewis structure, including unshared pairs, of the following molecules. Carbon has four bonds in the compound.

Galina-37 [17]

Explanation:

Refer to attachment.

Propane
Methanol (methyl alcohol)
methyl fluoride
ethyl fluoride

6 0

2 years ago