Given the reactions below, what is the free energy change for the overall reaction C → B + D

B → A
-75 kJ/mol

A + D → C
225 kJ/mol

A. 150 kJ/mol
B. -150 kJ/mol
C. -300 kJ/mol

The alkali metals (group 1) consist of lithium (3), sodium (11), potassium (19), rubidium (37), cesium (55), and francium (87). they are soft, metallic solids with low densities and low melting points. based on the data shown in figure 1, how many valence electrons do alkali metals share?

Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife

What shape would a molecule with two bound groups and two lone pairs have?