Lithium and nitrogen react to produce lithium nitride: 6Li(s) + N2(g) 2Li3N(s) How many moles of lithium nitride are produced when 0.450 mol of lithium react in the presence of excess nitrogen?
A) 0.150
B) 0.900
C) 0.0750
D) 1.35
E) 0.225
Question 2
Phosphate esters are prepared from
A) phosphoric acid + alcohol.
B) phosphoric acid + ester.
C) phosphoric acid + carboxylic acid.
D) phosphate + ester.
E) phosphate + alcohol.
Question 3
An atom with Z = 35 and A = 80 contains ________ protons, ________ electrons, and ________ neutrons.
A) 35; 35; 80
B) 80; 35; 35
C) 35; 35; 45
D) 45; 80; 45
E) 45; 80; 35
Step 2 of gene cloning: The actions of a restriction enzyme and DNA ligase to produce a recombinant
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