5:22 minutes
Textbook Question
When solid mercury(I) carbonate, Hg2CO3, is added tonitric acid, HNO3, a reaction occurs to give mercury(II)nitrate, Hg1NO322, water, and two gases A and B:Hg2CO31s2 + HNO31aq2¡Hg1NO3221aq2 + H2O1l 2 + A1g2 + B1g2(a) When the gases are placed in a 500.0-mL bulb at 20 °C,the pressure is 258 mm Hg. How many moles of gasare present?
