What do you call a circuit with only one path

If 22.5 liters of oxygen reacted with excess of hydrogen, how many liters of water vapor could be produced?

Take a look at this dandelion. the yellow flower on the right is pollinated and the seeds on the left are transported by

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)