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Alexeev081 [22]
3 years ago
9

Describe how iodine can tell you if there is starch in a substance?

Chemistry
1 answer:
noname [10]3 years ago
4 0
Iodine reacts to amylose. Amylose is a polychloride found in starches when combined with iodine the substance then becomes blue. This is because the iodine is becoming iodide. 

Hope this helps!
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Marshall determines that a gas has a gage pressure of 276 kPa what's the absolute pressure of this gas
Wittaler [7]
To determine the absolute pressure of this gas, all you need to do is to add the value of atmospheric pressure and the value of gage pressure.

Atmospheric pressure is equivalent to 100 kPa. 
Gage pressure is 276 kPa.

Then, we add both values. 

N = 100 kPa + 276 kPa
N =  376 kPa

The absolute pressure of this gas is 376 kPa.

Hope this helps :)
3 0
3 years ago
Read 2 more answers
Aluminum can react with oxygen gas to produce aluminum oxide (Al2O3). What type of reaction is this?
Pachacha [2.7K]

It's Synthesis, single replacement is incorrect.

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Answer: Aqua fortis is also known as Nitric Acid  

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detailed explanation by me

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HOPE THIS HELPSS!!!

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2 years ago
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Lorico [155]
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How is it possible for helium to have 8 spectral lines when it only has 2 electrons?
neonofarm [45]

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