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Rzqust [24]
3 years ago
12

Which element consists of positive ions immersed in a “sea” of mobile electrons?

Chemistry
1 answer:
denis-greek [22]3 years ago
8 0

Answer:

Calcium

Explanation:

Calcium is the only metal here

hope this helps...

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The living things in the earth (biosphere) interact with the earth (geosphere) in many ways thereby changing the communities of organisms found in ecosystems in the geosphere.

<h3>What is biosphere?</h3>

The biosphere is a zone of life found on earth. Hence the biosphere consists of living things. The geosphere consists of refers to the earth excluding the hydrosphere.

The living things in the earth (biosphere) interact with the earth (geosphere) in many ways thereby changing the communities of organisms found in ecosystems in the geosphere. This change of communities is called ecological succession.

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3 years ago
A dilute solution of bromine in carbon tetrachloride behaves as an ideal-dilute solution. The vapour pressure of pure CCl4 is 33
ANEK [815]

Explanation:

The given data is as follows.

     Vapour pressure of pure CCl_{4} = 33.85 Torr

         Temperature = 298 K

      Mole fraction of Br_{2} = 122.36 torr

Therefore, calculate the vapor pressure of Br_{2} as follows.      

     Vapour pressure of Br_{2} = mole fraction of Br_{2} x K of Br_{2}

                                    = 0.050 x 122.36 Torr

                                   = 6.118 Torr

So, vapor pressure of Br_{2} is 6.118 Torr .

Now, calculate the vapor pressure of carbon tetrachloride as follows.

     Vapour pressure of CCl_{4} = mole fraction of CCl_{4} x Pressure of CCl_{4}

                                     = (1 - 0.050) × 33.85 Torr

                                     = 32.1575 Torr

So, vapor pressure of CCl_{4} is 32.1575 Torr  .

Hence, the total pressure will be as follows.

                         = 6.118 Torr + 32.1575 Torr

                         = 38.2755 Torr

Therefore, composition of CCl_{4} = \frac{32.1575 Torr}{38.2755 Torr}

                         = 0.8405

Composition of CCl_{4} is 0.8405 .

And, composition of Br_{2} = \frac{6.118 Torr}{38.2755 Torr}

                                                  = 0.1598

Composition of Br_{2} is 0.1598 .

6 0
3 years ago
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