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11111nata11111 [884]
3 years ago
15

How many mole of HCL is produced if 4g of hydrogen is completely reacted with chlorine​

Chemistry
1 answer:
Elenna [48]3 years ago
5 0

Answer:

4 moles of HCl are produced.

Explanation:

Given data:

Mass of hydrogen = 4 g

Number of moles of HCl = ?

Solution:

H₂ +  Cl₂   →    2HCl

Number of moles of hydrogen:

Number of moles = mass/molar mass

Number of moles = 4 g/2 g/mol

Number of moles = 2 mol

now we will compare the moles of hydrogen and HCl.

                 H₂        :        HCl

                  1          :          2

                  2         :         2/1×2 = 4 mol

Thus, 4 moles of HCl are produced.

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What is the half-life of 20 g of a radioactive sample if 5 g remain after 8 minutes?
Anni [7]

Hello!

The half-life is the time of half-disintegration, it is the time in which half of the atoms of an isotope disintegrate.

We have the following data:

mo (initial mass) = 20 g

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x (number of periods elapsed) = ?

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Let's find the number of periods elapsed (x), let us see:

m =  \dfrac{m_o}{2^x}

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2^x = \dfrac{20}{5}

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2^x = 2^2

\boxed{x = 2}


Now, let's find the half-life (P) of the radioactive sample, let's see:

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2\:P = 8

P = \dfrac{8}{2}

\boxed{\boxed{P = 4\:minutes}}\Longleftarrow(Half-Life)\end{array}}\qquad\checkmark

I Hope this helps, greetings ... DexteR! =)

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2 years ago
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The products of the reaction are:

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Answer:

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