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
Furchgott's discovery that endothelial cells produce a vasodilating substance.
Some of the bacteria that can fix atmospheric nitrogen, converting it into a form usable by plants.
The Nitrogen Cycle
Examples of the most common X-ray positions and the images they produce.
Examples of the most common X-ray positions and the images they produce.
Farmers’ markets provide fresh, local produce to consumers