The Br are in 25 g CaBr2 will be approximately 203.87 g of Br.
The molar mass of an element's atoms is calculated by multiplying the element's comparative atomic mass by the molar mass constant.
In the given scenario, we need to find the grams of Br in CaBr2.
We know that,
molar mass of Br = 79.904 g/mol
molar mass of CaBr2 = 199.886 g/mol
CaBr2 = 2 Br + Ca
So, by the given data,
199.886 g = 2 x 79.904 g
255 g = X ( i.e., mass of Br )
X = 255 x 2 x 79.904 / 199.886
X = 203.87 g of Br
Thus, the amount of Br is 203.87gm.
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