quiz02_answers - Weed Science, PLS 4601c Section 7644 and...

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Weed Science, PLS 4601c Section 7644 and Grad. – Prin. Of Weed Science AGR 6932 Section 9212 University of Florida - Davie http://grove.ufl.edu/~turf/weedscience/ Philip Busey, turf@ufl.edu 954-579-3932 (cell) May 21, 2009 Quiz 2 –Natural sciences and mathematics (ANSWERS) 1. Using the table of periodic elements below, what is the atomic weight of water, H 2 O? a) 1 b) 3 c) 32 d) 33 e) None of the above – the atomic weight of water is 18 <<<<<<<<
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Weed Science – Quiz 2 - Univ. Florida - Davie Page 2 2. Which elements are inert and do not generally react chemically)? a) H – Li – Na - K b) Be – Mg – Ca - Sr c) F – Cl – Br - I d) He – Ne – Ar – Kr are colorless, odorless, monatomic gases with very low chemical activity, the “noble gases,” not strictly inert because compounds are formed. Also in this Group 18 of the periodic table is Xe (xenon) and Rn (radon), the latter important because of its high radioactivity and short half life. It is created naturally by decay of radium and uranium in rock and the gas can
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This note was uploaded on 07/23/2011 for the course PLS 4601c taught by Professor Busey during the Summer '09 term at University of Florida.

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quiz02_answers - Weed Science, PLS 4601c Section 7644 and...

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