For these elements: As, Cl, Ge, Fr, and W. (Arsenic, Chlorine, Germanium, Francium, and Tungsten) Which is the correct prder for electron affinity, Highest to Lowest.
1. W. Fr, As, Ge, CI
2. Fr. W. Ge, As, CI
3. Fr, W. Ge, As, CI
4. CI, As, Ge, W. Fr

When the ionic compound nabr dissolves in water, br– ions are pulled into solution by the attraction between what two particles? a. the na+ and br– ions b. the na+ ion and the negative end of a water molecule c. the br– ion and the positive end of a water molecule d. the br– ion and the negative end of a water molecule

One student said that the investigation was not valid (a fair test). write a plan for the investigation that includes improvements to the method and apparatus

Asolution of naoh has a concentration of 25.00% by mass. what mass of naoh is present in 0.250 g of this solution? use the periodic table in the toolbar if needed. 0.0625 g what mass of naoh must be added to the solution to increase the concentration to 30.00% by mass? g