Solid lead(II) sulfide reacts with aqueous hydrochloric acid to form solid lead(II) chloride and dihydrogen sulfide gas. Express your answer as a chemical equation.

Consider the reaction: n2(g) + o2(g) ? 2no(g) kc = 0.10 at 2000oc starting with initial concentrations of 0.040 mol/l of n2 and 0.040 mol/l of o2, calculate the equilibrium concentration of no in mol/l how would this be done?

What state of matter is ice a. liquid b. element c. solid d. gas

Which symbol can be used to indicate the pressure at which a chemical reaction is carried out? 25°c 2 atm pa