FRQ Unit 3

Question 1

CuNO3 particle drawing

Answer 1

Same amount of Cu particles as NO3 particles

Question 2

Cu(NO3)2

Answer 2

1/2 as many Cu as NO3- particles but the Cu are (Cu2+)

Question 3

When showing interactions of the componentes of LiCl, represent the different particles in the solution what should you do to Li and Cl

Answer 3

Separate em and surround each one with 4 H2O

Make sure the H2O is facing the right direction so it is attracted to the Li and the Cl

Question 4

Molar mass butane lab steps

Answer 4

1)canister mass before/after
2) find partial pressure
3) solve for volume: PV/t = PV/T
4)use avogadros law v/n=v/n to solve for moles
4) Then finally solve for MM
Which is MM=g/m