Respuesta :
a. sodium and chlorine b. carbon and hydrogen c. nitrogen and hydrogen d. bromine
Compounds are formed when atoms from different elements in fixed proportions are joined with chemically.
a. sodium chloride (NaCl) -Elements are 1 mole Sodium and 1 mole Chlorine
b. ammonia (NH3) -Elements are 1 mole of Nitrogen and 3moles of Hydrogen.
c. ethanol (C2H60) -Elements are 2 moles of Carbon, 6moles of Hydrogen anbd 1 mole of Oxygen.
d. bromine (Br2)-Elements is 2moles of Bromine.
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