Asolution of nacl(aq)nacl(aq) is added slowly to a solution of lead nitrate, pb(no3)2(aq)pb(no3)2(aq) , until no further precipitation occurs. the precipitate is collected by filtration, dried, and weighed. a total of 13.25 g pbcl2(s)13.25 g pbcl2(s) is obtained from 200.0 ml200.0 ml of the original solution. calculate the molarity of the pb(no3)2(aq)pb(no3)2(aq) solution.

Transportation is the largest single source of air pollution in the united states. air pollution can harm the environment and human health. which technology could offer a solution to this problem? mufflers that reduce noise motors that run on electricity tires that improve gas mileage

Agroup of students is studying convection current. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other is in an area with warm air. after 10 minutes, the balloon are released from a height of 1 meter. which of the following to the students most likely observe? a) the warm balloon expands and rises. the cold balloon shrinks and sinks b) the balloon both rise. the cold balloon is larger than the warm balloon c) the cold balloon expands and rises. the warm balloon shrinks and sinks d) the balloon rise at the same rate. both balloons are the same size

The nuclear fission process releases neutrons and question 27 options: alpha particles electrons energy beta particles