Examine these atomic models and answer the question that follows. The filled black circles represent electrons. (Note: Electrons and nucleus are not drawn to scale.)Assuming that the number of electrons is the same as the number of protons (which is not always the case), which picture represents the atom of carbon that has an atomic number of 6?
A
Environmental & Atmospheric Sciences
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An amino acid is an organic molecule that contains both an amine group and a carboxyl group. At an acidic pH, which structure is most likely?
A. Structure (a) B. Structure (b) C. Structure (c) D. All three structures are equally possible.
Environmental & Atmospheric Sciences
Which of the following equations correctly describes the relationship between mass and energy when mass, m, is converted to energy, E?
A) E = mc B) E = 2mc C) E= 2 mc2 D) E= mc2
Environmental & Atmospheric Sciences
Condensation in the atmosphere always results in precipitation
a. True b. False Indicate whether the statement is true or false
Environmental & Atmospheric Sciences
The world population growth rate is currently approximately ________%
A) 20 B) 10 C) 5 D) 2.5 E) 1.2
Environmental & Atmospheric Sciences