Which of the following metals will react with water to produce a metal hydroxide and hydrogen gas? (2 points)
select one:
a. al
b. bi
c. na
d. fe

The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.

In the following table, all the columns for the element calcium are filled out correctly. element electron structure of atom electron structure of ion net ionic charge calcium 1s22s22p63s23p64s2 1s32s22p63s23p64s1 +1 true false

Find the mass, in grams, of 5.00*10^23 molecules of f2