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Answer:
Explanation:
Using the formula as follows: mole = mass/molar mass
Molar mass of Ba(NO3)2
= 137 + (14 + 48)2
= 137 + 124
= 261g/mol
Mole = mass ÷ molar mass
0.625 mol = mass/261g/mol
mass = 0.625 × 261
mass = 163g