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marysya [2.9K]
3 years ago
9

brimine and chlorine are in group 7 and they both form diatomic molecule. however bromine molecule exist as liquid at room temp

and chlorine at room temp. give a brief explanation at what is responsible for their dispersity​
Chemistry
1 answer:
Ne4ueva [31]3 years ago
6 0

Answer: difference in Vander Waals forces

Explanation:

The intermolecular force of attraction between the molecules in chlorine is WEAKER than that of Bromine.

This force is known as VANDER WAALS forces. And it DECREASES down the group; so Chlorine which is placed higher is a GAS, while Bromine placed lower in Group 7 is a LIQUID.

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A cylinder, with a piston pressing down with a constant pressure, is filled with 2.10 moles of a gas (n1), and its volume is 46.
olga2289 [7]

Answer:

The volume is  V_2 =15.33 \  L

Explanation:

From the question we are told that

    The number of moles of the gas is  n_1 = 2.10 \  moles

      The volume of the gas is  V  =  46.0 \  L

        The  of moles of the gas that leaked is  n_2 =  0.700 \  mol

Generally from the ideal gas law

      PV  =  nRT        

Generally at constant pressure and temperature

        \frac{V}{n}  =  constant

So   \frac{V_1 }{n_1}  = \frac{V_2 }{n_2}

=>    V_2 = \frac{ V_1 *  n_2 }{ n_1}

=>    V_2 = \frac{  46.0 *  0.700  }{ 2.10 }  

=>    V_2 =15.33 \  L

             

     

5 0
3 years ago
Lastly, Snape thinks we should try one more calculation. What is the retention factor if the distance travelled by the solvent f
bija089 [108]

Answer:

The retention factor of an ion is 0.10 .

Explanation:

Retention factor is defined as ratio of distance of distance traveled by solute to the distance traveled by solvent on chromatogram.

R_f=\frac{d_{solute}}{d_{solvent}}

We have:

d_{solute}=d_{ion}=0.20 cm

d_{solven}=2.00 cm

The retention factor of an ion :

R_f=\frac{0.20 cm}{2.00 cm}=0.10

7 0
3 years ago
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