The equation for the reaction between zinc and aqueous copper(II) sulfate is shown. Zn + CuSO4 → ZnSO4 + Cu
Which statement is correct?
Select the correct response:
The oxidation state of the reducing agent has changed from +2 to 0
The oxidation state of the oxidising agent has changed from 0 to +2.
The oxidation state of the reducing agent has changed from 0 to +2.
This is not a redox reaction. The solution changes from colourless to blue.

At a temperature of 393 k, the temperature of a sample of nitrogen is 1.07 atm what will the pressure be at a temperature of 478 k

Temperature is _related to the average kinetic energy of a gas. inversely directly not disproportionally

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