Find the number of molecules of 0 convert 6.60dm S.T.P to s03

Answer 1

I assume you meant "Find the number of molecules of SO2 that can be converted to SO3 when 6.60 dm^3 of SO2 is at STP."

To solve this problem, we need to use the balanced chemical equation for the conversion of SO2 to SO3:

2 SO2(g) + O2(g) → 2 SO3(g)

From the equation, we can see that 2 moles of SO2 react with 1 mole of O2 to produce 2 moles of SO3. Therefore, the ratio of moles of SO2 to moles of SO3 is 2:2 or 1:1.

At STP, 1 mole of any gas occupies 22.4 dm^3. Therefore, 6.60 dm^3 of SO2 at STP is equal to:

6.60 dm^3 / 22.4 dm^3/mol = 0.2955 mol SO2

Since the ratio of moles of SO2 to moles of SO3 is 1:1, we can convert all of the 0.2955 mol of SO2 to SO3. Therefore, the number of molecules of SO2 that can be converted to SO3 is:

0.2955 mol SO2 x 6.022 x 10^23 molecules/mol = 1.78 x 10^23 molecules of SO2.