Given the reaction
QuSO4(s) Cu2+(ag) SO42 + (aq)
The CuSO4(s) dissolves more rapidly when it is powdered because the increase in
surface area allows for
1) increased exposure of solute to solvent
2) decreased exposure of solute to solvent
3) increased solute solubility
4) decreased solute solubility

Which feature do highland climates have that lower elevation areas do not?

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

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