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GenaCL600 [577]
2 years ago
10

What happens when you drop iodine on a leaf?

Chemistry
1 answer:
insens350 [35]2 years ago
6 0
When you drop iodine on a leaf you may observe a colour change of orange/brown to a blue/black complex.

This is because in the leaf there are starch molecules that form a blue/black complex with the starch molecules.

hope that helps :)
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Answer:

an atom cannot be broken down

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How many molecules of excess reactant remain after the reaction is complete?
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How many hours will it take for the concentration of methyl isonitrile to drop to 15.0 % of its initial value?
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Answer:

The concentration  of methyl isonitrile will become 15% of the initial value after 10.31 hrs.

Explanation:

As the data the rate constant is not given in this description, However from observing the complete question  the rate constant is given as a rate constant of 5.11x10-5s-1 at 472k .

Now the ratio of two concentrations is given as

ln (\frac{C}{C_0})=-kt

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So time t is given as

ln (\frac{C}{C_0})=-kt\\ln(0.15)=-5.11 \times 10^{-5} \times t\\t=\frac{ln(0.15)}{-5.11 \times 10^{-5} }\\t=37125.6 s\\t=37125.6/3600 \\t= 10.31 \, hrs

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A small hole in the wing of a space shuttle requires a 20.7-cm² patch.
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Unit conversion is a method in which we multiply or divide with a particular numerical factor and then finally round off to the nearest significant digits.

Patch area of the space shuttle is 20.7 cm²

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or, 1 cm² = (0.00001 km)²

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The patch area in square kilometers is 2.07 × 10⁻⁹ km²

To learn more about unit conversion, visit: brainly.com/question/11543684

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