Formamide decomposes at high temperature. if 0.186 mol of formamide (hconh2) dissociates in a 2.16 l flask at 400 k, what are the concentrations of all species present at equilibrium at 400 k? (hint: calculate concentrations first) (b) what is the total pressure in the container at equilibrium?

Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change?

The following reaction shows sodium carbonate reacting with calcium hydroxide. na2co3 + ca(oh)2 → naoh + caco3 how many grams of naoh are produced from 20.0 grams of na2co3? (molar mass of na = 22.989 g/mol, c = 12.01 g/mol, o = 15.999 g/mol, ca = 40.078 g/mol, h = 1.008 g/mol) 12.2 grams 15.1 grams 24.4 grams 30.2 grams