Question

3 Br+ AL= AL(Br)3, известно, что m(AL(Br)3)= 53,4г, найдите массу 3Br

Answer 1

Над элементами пишем известное - неизвестное. Под ними молярную массу. И решаем пропорцией

Answer 2

To find the mass of 3Br (three moles of bromine), we can start by determining the molar mass of bromine (Br) and then calculate the mass of 3 moles of bromine.

1. Find the molar mass of bromine (Br): The molar mass of one bromine atom (Br) can be found on the periodic table. The molar mass of bromine is approximately 79.904 grams per mole (g/mol).

2. Calculate the mass of 3 moles of bromine (3Br): To find the mass of 3 moles of bromine, we multiply the molar mass of bromine by 3 (since we have 3 moles):

Mass of 3 moles of bromine (3Br) = 3 moles x molar mass of Br

Mass of 3 moles of bromine (3Br) = 3 moles x 79.904 g/mol

Mass of 3 moles of bromine (3Br) = 239.712 g

So, the mass of 3 moles of bromine (3Br) is approximately 239.712 grams.