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mamaluj [8]
3 years ago
5

Which group reacts with water to form hydrogen

Chemistry
2 answers:
cluponka [151]3 years ago
8 0
The answer is alkali metal groups i think
Paha777 [63]3 years ago
4 0

Answer: The answer is the alkali metals group! Hope this helps!

Explanation:

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Create an element card that has the following information:
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Answer:

Atomic number:6

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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

Here C/C_0 is the ratio of concentration which is given as 15% or 0.15.

k is the rate constant which is given as 5.11 \times 10^{-5} \, s^{-1}

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

So the concentration will become 15% of the initial value after 10.31 hrs.

7 0
2 years ago
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Explanation:

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