Calculate the mass of each of the following:
2 moles of potassium bromide
Given: Number of moles = 2
Atomic mass of KBr = 39 + 80 = 119g/mol
To find out the mass of potassium bromide, apply the formula given:
⇒ 
⇒ Mass = 2mol × 119g/mol
⇒ Mass = 238g
Thus, the mass of potassium bromide is 238g.
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