Answer:
0.5 mol
Step-by-step explanation:
Molarity of a substance , is the number of moles present in a liter of solution .
M = n / V
M = molarity
V = volume of solution in liter ,
n = moles of solute ,
hence , from the question ,
M = molarity of Ba(NO₃)₂ = 2.00 M
V = volume of Ba(NO₃)₂ = 0.25 L
Therefore , to find the number of moles of Ba(NO₃)₂ , the above formula can be used ,
i.e. ,
M = n / V
rearranging ,
n = M * V
Putting the respective values the above formula ,
n = 2.00 M * 0.25 L
n = 0.5 mol