If one object has more mass than another then it weighs more or less than the other object?

What is the percentage of hydrogen in nitrogen trihydride

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?

Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?