Your teacher give you a bag of white powder with 0.396 moles written on it. You weigh the white powder and the scale says 80.0 g. Your teacher tells you that is one of the substances below. What is the substance? NaCl (table salt)

NaHCO3 (baking soda)

Na2B4O7 (borax)

In pqr m< p=60 m< q= 30 and m

Amixture initially contains a, b, and c in the following concentrations: [a] = 0.300 m , [b] = 1.05 m , and [c] = 0.550 m . the following reaction occurs and equilibrium is established: a+2b⇌c at equilibrium, [a] = 0.140 m and [c] = 0.710 m . calculate the value of the equilibrium constant, kc.

Find the mass, in grams, of 5.00*10^23 molecules of f2