Answer:
Halogen / salt-former
Explanation:
Bromine is classified as an element in the 'Halogens' section which can be located in group 7 of the Periodic Table. The term "halogen" means "salt-former" and compounds containing halogens are called "salts".
Answer:
Disease ranching
Explanation:
Floods and Droughts are caused by the enviorment. Diseases are but a product and don't affect the enviorment.
Answer: 3.86x10^24 molecules
Explanation:
From Avogadro's hypothesis, we understood that 1mole of any substance contains 6.02x10^23 molecules.
This means that 1mole of H2O contains 6.02x10^23 molecules.
Therefore, 6.42 moles of H20 will contain = 6.42 x 6.02x10^23 = 3.86x10^24 molecules