The valency of nitride and magnesium is incorrect
Answer: the second option is the best option
Elements or compounds can be classified as pure substances.
Value of Planck's constant in SI unit is 6.626 × 10⁻³⁴ Joule-second.
The balanced chemical reaction would be:
<span>2NI3 = N2 + 3I2
We use the reaction above and the molar masses of the substances involved. We start with the initial amount of NI3 reactant.
3.58 g NI3 (1 mol NI3 / 394.71 g NI3) (3 mol I2 / 2 mol NI3) = 0.0136 mol I2
Therefore, option C is the answer.</span>