Answer:
Si
Explanation:
Dispersion force or London force is the force of attraction between two atoms or molecules in a substance in solid , liquid and gas . In gas , this force is minimum and in solid this force is maximum . In solid this force is maximum in metals in which this force forms metallic bond .
Among the given substances , Si , Sn , MgO , C₂₀H₄₂ are solid , so dispersion force will be high in them .
Among all as mentioned above , Si will have highest dispersion force . It is due to four covalent bond that bind two atoms of Si in solid silicon . Its three dimensional crystal structure consist of silicon atoms , all bound by four covalent bonds .
Answer:
ribosome i think or cant u google that
Explanation:
Total volume of the solution will be (10 ml + 10 ml) = 20 ml. As there are 1000 ml in 1 L. So, 20 ml will be equal to 0.02 L.
As molarity equals number of moles divided by volume in liter. Hence, calculate number of moles of
as follows.
No. of moles = 
= 
=
mol
Hence, moles of
will also be equal to
mol.
Now, calculate the no. of moles of
as follows.
No. of moles = 
= 
=
mol
As there are 2
ions in 1 mole of
. Hence, in
mol number of
ions will be
mol.
When both the solutions are mixed together then molarity of the solution will be calculated as follows.
Molarity of solution = 
= 
= 0.015 M
Thus, we can conclude that the molar concentration of Na (aq) in the given solution is 0.015 M.
It’s the first two answers isn’t it? Because xy=k is inverse