Name 2 key ingredients in any c0vid vaccine.

(Mention which one you're picking)

If you burn 46.6 g of hydrogen and produce 416 g of water, how much oxygen reacted

How big are the bighest ocean waves at mavericks

The diagin dilutepage 6 of 12a6a5(a)fluorine, chlorine, bromine and iodine are placed in the same group of theperiodic table.state the common name used to describe elements in this group.(i)state the group in which the elements are placed and explain whythey are placed in that group.(ii)which of the above named elements is a solid at roomtemperature and pressure?