If 100.0 grams of na3n decompose to form sodium and nitrogen, how many moles of sodium are formed? write and balance equation before solving

3.62 moles

Explanation:

Sodium nitride (Na₃N) will decompose as shown in the balanced equation below

2Na₃N → 6Na + N₂

The molar mass of sodium nitride in the solution is

Mass of Na above is (2 ₓ 3 ₓ 23) = 138 g

Mass of N above is (2 ₓ 14) = 28 g

Mass of Na₃N = 138g + 28g = 166g

From the equation above, we can deduce that 166g of Na₃N will produce 6 moles of sodium. Hence 100g of Na₃N will produce X moles of sodium where X is unknown.

∴ 166g of Na₃N →  6 moles of Na

100g of Na₃N → X moles of Na

When the above is cross multiplied,

X =

X = 3.62 moles

3.62 moles of sodium (Na) will be formed when 100g of Na₃N decomposes

okay yes , aha.

a) the particles of the chair are strongly held together.