Chemistry

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In the term trace element, the modifier trace means that A) the element is requi Started by Hawke	2 Replies 1,514 Views	Feb 5, 2014 by Hawke
A group of molecular biologists is trying to synthesize a new artificial compoun Started by Hawke	2 Replies 1,393 Views	Feb 5, 2014 by Hawke
Which one of the atoms shown would be most likely to form a cation with a charge Started by Hawke	2 Replies 1,708 Views	Feb 5, 2014 by Hawke
In the methane molecule shown in the figure above, bonds have formed that includ Started by Hawke	2 Replies 1,255 Views	Feb 5, 2014 by Hawke
What causes the shape of the molecule shown above? A) the configuration of the 2 Started by Hawke	2 Replies 1,521 Views	Feb 5, 2014 by Hawke
If life arose on a planet where carbon is absent, which element might fill the r Started by Hawke	2 Replies 1,495 Views	Feb 5, 2014 by Hawke
Which of these systems is least likely to be at chemical equilibrium? A) a test Started by Hawke	2 Replies 1,608 Views	Feb 5, 2014 by Hawke
Which of the following correctly describes any reaction that has reached chemica Started by Hawke	2 Replies 914 Views	Feb 5, 2014 by Hawke
Which of the following correctly describes chemical equilibrium? A) Forward and Started by Hawke	2 Replies 1,286 Views	Feb 5, 2014 by Hawke
Why is each element unique and different from other elements in chemical propert Started by Hawke	2 Replies 1,774 Views	Feb 5, 2014 by Hawke
What is the pH of a solution with a hydroxyl ion [OH-] concentration of 10-12 M? Started by Hawke	2 Replies 1,228 Views	Jul 10, 2013 by Hawke
Which of the following ionizes completely in solution and is considered to be a Started by Hawke	2 Replies 893 Views	Jul 10, 2013 by Hawke
Which drawing in the figure above depicts an atom with a valence of 2? A) A B) B Started by Hawke	2 Replies 1,272 Views	Jul 3, 2013 by Hawke
Which drawing in the figure above depicts an atom with a valence of 3? A) A B) B Started by Hawke	2 Replies 1,826 Views	Jul 3, 2013 by Hawke
What bonding or interaction is most likely to occur among a broad array of molec Started by Hawke	2 Replies 1,426 Views	Jul 3, 2013 by Hawke
Van der Waals interactions result when A) hybrid orbitals overlap. B) electrons Started by Hawke	2 Replies 1,094 Views	Jul 3, 2013 by Hawke
Which of the following explains most specifically the attraction of water molecu Started by Hawke	2 Replies 911 Views	Jul 3, 2013 by Hawke
Phosphorus-32, a radioactive isotope of phosphorus-31 (atomic number 15), underg Started by Hawke	2 Replies 1,227 Views	Jul 3, 2013 by Hawke
Carbon-12 is the most common isotope of carbon, and has an atomic mass of 12 dal Started by Hawke	2 Replies 1,966 Views	Jul 3, 2013 by Hawke
In the figure above, how many electrons does nitrogen have in its valence shell? Started by Hawke	2 Replies 1,521 Views	Jul 3, 2013 by Hawke
The nucleus of a nitrogen atom contains 7 neutrons and 7 protons. Which of the f Started by Hawke	2 Replies 1,140 Views	Jul 3, 2013 by Hawke
Which of the following solutions would require the greatest amount of base to be Started by Hawke	2 Replies 1,250 Views	Jun 11, 2013 by Hawke
What is the hydrogen ion [H+] concentration of a solution of pH 8? A) 8 M B) 8 x Started by Hawke	2 Replies 748 Views	Jun 11, 2013 by Hawke
If the pH of a solution is decreased from 9 to 8, it means that the A) concentra Started by Hawke	2 Replies 1,041 Views	Jun 11, 2013 by Hawke
If the pH of a solution is increased from pH 5 to pH 7, it means that the A) con Started by Hawke	2 Replies 920 Views	Jun 11, 2013 by Hawke