Monday, September 22, 2014

TEST QUESTIONS for Tuesday Sept 23

How many sig figs in 12030?
What speeds up chemical reactions?
convert 12.6 grams to milligrams
How many neutrons in Zn-67
T or F All atoms of fluorine have 9 protons.


Why is the atomic mass of Zn listed as 65.39 if NO ATOMS OF Zn weigh 65.39?


Be able to calculate density of irregular objects.

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