MOLE CONVERSIONS ASSIGNMENT- CLASSWORK – Wednesday, 9/14/11

DON’T FORGET…

·         SHOW YOUR WORK

·         ROUND YOUR ANSWERS FOR SIGNIFICANT FIGURES

·         INCLUDE UNITS WITH YOUR ANSWERS

1.) 3.327 x 10²⁴ molecules OF₂ = ? moles

2.) 375 grams Zn(NO₃)₂ = ? moles

3.) 8.42 moles SiF₄ = ? molecules

4.) 2.1 x 10²⁴ molecules Fe₂O₃ = ? grams

5.) 137.5 grams NBr₃ = ? molecules

6.) 3.9 x 10²² molecules Rb₂CO₃ = ? grams

TURN IN ON THURSDAY, 9/15/11 IF YOU DON’T FINISH DURING CLASS!