In a tritation 25cm3 of 0.200mol/dm3 NaOH solution is exactly neutralized
by 22.70 cm3 of a dilute solution of HCl.
1.calculate the concentration of HCl

Compare and contrast the bohr model and the electron cloud models of the atom.

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.

Oil rich countries in the middle east cover about 4% of earths total land area but prossess about 48% of the worlds known oil reserves what is the main reason for high concentration of reserves in this part of the world