Four people make observations recorded in the table. Which best describes what the observations have in common?

They involve nuclear energy.
They involve radiant energy.
They involve changes in waves.
They involve changes in energy.

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as

What does a complete balanced chemical equation include? a. exothermic coefficients b. endothermic coefficients c. valence electrons d. molar coefficients

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.