compounds are composed of elements
elements are composed of sub atomic particles such as electrons and proton
Would the answer be d wouldn't it
Answer:
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Explanation:
55.36 is the mass of Calcium Bromide is needed to make 0.500 L of 0.554 M solution.
Explanation:
Data given:
mass of Ca
= ?
molarity of the calcium bromide solution = 0.554 M
Volume of the calcium bromide solution= 0.5 L
First the moles of calcium bromide is calculated as:
molarity = ![\frac{number of moles}{volume in litres}](https://tex.z-dn.net/?f=%5Cfrac%7Bnumber%20of%20moles%7D%7Bvolume%20in%20litres%7D)
number of moles = 0.554 x 0.5
number of moles = 0.277 moles of calcium bromide
atomic mass of calcium bromide = 199.89 grams/mole
mass = atomic mass x number of moles
mass of calcium bromide = 199.89 x 0.277
= 55.36 grams
mass of calcium bromide required is 55.36 grams to make solution of 0.554 M in a solution of 0.5 litres.