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3 years ago

Can cornstarch disintegrate in fire or an open flame?

2 answers:

5 0

Corn starch, like wood, consists of a carbohydrate complex, which is why it burns – but it will only ignite when it is dispersed in air. While it's packed in the container or in a pile on the counter it will not burst into flames due to insufficient oxygen.

ArbitrLikvidat [17]3 years ago

4 0

In an open flame because it can not only catch on fire extremely easily but also cause an explosive

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4 years ago

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How is energy involved in a chemical change?

Nezavi [6.7K]

Answer:

Energy is released or absorbed in a chemical change

Explanation:

In a chemical change a new substance is formed from it.

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4 years ago

Write the complete balanced equation for the following reaction: C7H6O+O2 CO2+H2O

zavuch27 [327]

Answer:

C7H6O+8O2 ---> 7CO2+3H2O

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3 years ago

What are the protons neutrons and electrons of Vanadium-52 +3 charge<br> HELP

Alex17521 [72]

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3 years ago

What is the freezing point of a solution prepared from 45.0 g ethylene glycol (C2H6O2) and 85.0 g H2O? Kf of water is 1.86°C/m.

Andrews [41]

Answer:

$T_{sol}=-15.9\°C$

Explanation:

Hello,

In this case, we can analyze the colligative property of solutions - freezing point depression - for the formed solution when ethylene glycol mixes with water. Thus, since water freezes at 0 °C, we can compute the freezing point of the solution as shown below:

$T_{sol}=T_{water}-i*m*Kf$

Whereas the van't Hoff factor for this solute is 1 as it is nonionizing and the molality is:

$m=\frac{mol_{solute}}{kg\ of\ water}=\frac{45.0g*\frac{1mol}{62g} }{85.0g*\frac{1kg}{1000g} } =8.54m$

Thus, we obtain:

$T_{sol}=0\°C+(-8.54m*1.86\frac{\°C}{m} )\\\\T_{sol}=-15.9\°C$

Best regards.

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3 years ago