A25.0 ml aliquot of 0.05300.0530 m edtaedta was added to a 38.038.0 ml solution containing an unknown concentration of v3 v3 . all of the v3 v3 present in the solution formed a complex with edtaedta , leaving an excess of edtaedta in solution. this solution was back-titrated with a 0.03100.0310 m ga3 ga3 solution until all of the edtaedta reacted, requiring 11.011.0 ml of the ga3 ga3 solution. what was the original concentration of the v3 v3 solution?

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