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jaylanmahone223
04.08.2019 •
Chemistry
How many grams of bromine, br2, are required to react completely with 37.4 grams of aluminum chloride, alcl3?
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Ответ:
3Br₂ + 2AlCl₃ --> 2AlBr₃ + 3Cl₂
This means that 3 moles of Br₂ which is equal to 159.1 g is required to react with 2 moles of AlCl₃ or equal to 266.68 g. Using this and the given above,
mass of bromine = (37.4 grams AlCl3)(159.1 g of Bromine/266.68 g of AlCl3)
Mass of bromine = 22.31 grams of Br₂
22.31 grams
Ответ:
Explanation:
To find the number of moles in a substance given it's number of entities we use the formula
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
We have the final answer as
127.57 molesHope this helps you