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bagirrra123 [75]
3 years ago
7

Iron is a solid, grey metal. Oxygen is a colorless gas. When iron and oxygen chemically combine , rust is made. Rust has a reddi

sh brown color. Why does rust differ from iron and oxygen?
Chemistry
1 answer:
Phoenix [80]3 years ago
6 0
Because the formation of rust is a kind of chemistry reaction.
After chemistry reaction, compound with new properties is produced.
Of course, color is one of the new properties.
For example, if you put iron in colorless acid solution, a green solution is made.
This kind of chemisty reaction differs from physical reaction, for example, pigment with one color dissolves in liquid, a liquid with same color is made.
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The normal boiling point of a liquid is 282 °C. At what temperature (in °C) would the vapor pressure be 0.500 atm? (∆Hvap = 28.5
NNADVOKAT [17]

For a normal boiling point of a liquid is 282 °C, the temperature is mathematically given as

T2=181.55°C\

<h3> What temperature (in °C) would the vapor pressure be 0.500 atm? </h3>

Generally, the equation for the gas  is mathematically given as

ln(p1/p2)=dHvap/R(1/T2-1/T1)

Therefore

ln(1/0.26)=23500/8.214(1/T2-1/555)

T2=181.55^C

In conclusion

T2=181.55°C

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Olenka [21]

I don't understand

Explanation:

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3 years ago
How do I do this?<br> 100 points <br> Please help
harina [27]

Answer:

Explanation:

OK this is simple

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3 years ago
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I need to find A, Z and the element abbreviation for this nuclear equation problem. X is unknown. Elements written in the follow
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If there were no decomposers, which of the following would most likely happen?
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B. Some plants might die due to a shortage of important nutrients.

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The amount of dead plant and animal matter would <em>increase </em>because there is nothing to breakdown the matter. Animals cannot photosynthesise under any circumstances. The lifespan of plants and animals would not be affected.

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