Acompound has the molecular formula c3h8. which class of organic compounds does it belong to?

Light waves travel than sound waves.

Which method would be best to separate a mixture of sand and gravel

For the reaction i2(g)+br2(g)←−→2ibr(g), kc=280 at 150 ∘c. suppose that 0.450 mol ibr in a 2.00-l flask is allowed to reach equilibrium at 150 ∘c. what is the equilibrium concentration of 2ibr, i2, br2