Question

find the mass in grams of 88.4 moles of NI3? given the molar mass of N = 14.01 g/mol and I = 126.90 g/mol

Answer 1

mass of NI₃ in grams is 34892.364 g

it has given that 88.4 moles of NI₃.

we have to find the mass in grams of NI₃ where the atomic mass of N = 14.01 g/mol and I = 126.90 g/mol.

molar mass of NI₃ = atomic mass of N + 3 × atomic mass of I

= 14.01 + 3 × 126.90

= 14.01 + 380.70

= 394.71 g/mol

we know, mole = given mass/molecular mass

⇒88.4 = given mass/394.71

⇒given mass = 88.4 × 394.71

= 34,892.364 g

therefore, mass of NI₃ in grams is 34892.364 g

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