Friday 10 March 2017

Chemistry 11

Today we took notes on how to find the formula for a hydrate given the mass of the anhydrous salt and the amount of water given off.    We then started lab 4D and you should all have gotten to the point where you have recorded all the information for one of the unknown hydrates.  Bring the data table back to class on Monday. 

Unit 3 Review Answers to selected questions:

2) all the diatomic elements are:  N2, O2, I2, Br2, Cl2, F2, At2 and H2
4) 7.93 L
7) 2.56 x X1024 molecules
8)   WO2Br2
10) 4.03 x 1023   
14) 5.58 moles
16) 0.491 grams
18) 4.30 x 1023 atoms of gold