500.0 L of gas are prepared at 0.921 atm pressure and 200.0°C. When the tank cools to 20.0°C, the pressure is 30.0 atm. What is the volume of the gas under these conditions?

Insoluble sulfide compounds are generally black in color. which of the following combinations could yield a black precipitate? check all that apply. na2s(aq)+kcl(aq) li2s(aq)+pb(no3)2(aq) pb(clo3)2(aq)+nano3(aq) agno3(aq)+kcl(aq) k2s(aq)+sn(no3)4(aq)