Sodium (Na) reacts with nitrogen gas (N2) to produce sodium nitride. If a student collects 2.5 moles of sodium nitride (NaN3) after the reaction has been completed, determine the number of moles of nitrogen that were initially present.

2Na + 3N2 -> 2NaN3

Your

3.75 mole N2

1.2 mole N2

3.87 mole N2

1.67 moles of N2 produce 2.5moles of NaN3

Explanation:

Equation of reaction:

2Na + 3N₂ → 2NaN₃

From the equation of reaction, 3 moles of N₂ produces 2 moles of NaN₃

How much is gotten from 2.5moles of 2NaN₃?

2 moles of N₂ = 3 moles of NaN₃

X moles of N₂ = 2.5 moles of NaN₃

X = (2.5 × 2) / 3

X = 1.67moles of N₂

1.67 moles of N₂ produces 2.5moles of NaN₃

in the given question, the partial pressure is calculated by using the ideal gas equation, that is, pv = nrt

here, p is pressure, v is volume = 25 l, n is number of moles = 0.0104 moles, r is gas constant = -0.0821 l.atm / mol.k

t is temperature = 273 k

p = nrt / v

p = (0.0104 mol × 0.0821 l.atm / mol.k × 273 k) / 25 l

= 0.0093 atm

can you list the answers so i can answer