PLEASE HELP!! H2 and Br2 are heated to give HBr according to the equation below:
H2(g)+Br2(g)-->2HBr(g)

at equilibrium, at a specific temperature, the concentration of H2 is 0.133 mol/L, the concentration Br2 is 0.121 mol/L, and the concentration HBr is 0.712 mol/L. Calculate the equilibrium constant for this reaction at that specific temperature.
*do not put units in the answer box. round to the nearest hundredths place.*

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

Which statement is true according to the kinetic theory? a. molecules of different gases with the same mass and temperature always have the same average density. b. molecules of different gases with the same mass and temperature always have the same average volume. c. molecules of different gases with the same mass and temperature always have the same pressure. d. molecules of different gases with the same mass and temperature always have the same molecular mass. e. molecules of different gases with the same mass and temperature always have the same average kinetic energy.

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