How many atoms are in 1.54 moles of bromine (br) 35, 79.90

 atoms  

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number of particles.

General representation of an element is given as:  

where,

Z represents Atomic number

A represents Mass number

X represents the symbol of an element

1 mole of bromine contains=  atoms  

1.54 moles of bromine contains=  atoms  

Thus  atoms  are present in 1.54 moles of bromine.

i would say b

explanation:

but i think i would need more information than that