How many grams of sodium nitrate must decompose to release 2.55 L of oxygen gas at STP?

Question

Given the unbalanced equation: NaNo3-------NaNo2 + O2

Answer 1

Find the number of moles of O2 (1 mole=22.4 L)

Since 2 moles of NaNO3 supplies 1 mole of O2,
find the number of MOLES of NaNO3 to supply the oxygen you need.

Now take the number of moles of NaNO3 you found and multiply by its mole weight.

Answer 2

mandrake is powerful, yet is complicated. simply by fact the circumstances are at STP, the suitable gas regulation isn't needed. basically stoichiometry is sufficient. a million. stability the equation 2. Convert 2.fifty 5 L of O2 to moles by dividing by 22.4 L /mole 3. Multiply by the appropriate molar ratio to get moles of NaNO3. 4. Multiply by the molecular mass of NaNO3 to get grams.