Need

the reason i2 has a higher melting point than f2 is because:

i2 possesses hydrogen bonding, while f2 does not.

f2 possesses no intermolecular forces.

i2 possesses a more polarizable electron cloud.

f2 is a nonmetal.

What is the temperature of one mole of helium gas at stp?

Calculate the ratio of h+ ions to oh– ions at a ph = 7. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 7. are they the same? why or why not? record your comparison in table a. what is the concentration of h+ ions at a ph = 7? mol/l what is the concentration of oh– ions at a ph = 7? mol/l what is the ratio of h+ ions to oh– ions at a ph = 7? : 1

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons