Which of the following ions is isoelectronic with a neon atom?
a. N3-
b. Li+
c. Cl-
d. F2-
a
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Significant Figures: In the quotient 
, A has 5 significant figures, B has 2 significant figures, and C has 3 significant figures. How many significant figures does the quotient have?
A. 2 B. 3 C. 4 D. 0 E. 1
The minimum amount of steam at 100°C needed to melt 1 gram of 0°C ice is
A) 0.125 gram. B) 0.148 gram. C) 6.75 grams. D) 8 grams. E) none of the above
If we add 700 J of heat to 12 moles of an ideal monatomic gas at constant volume, what will be the change in temperature of the gas? (R = 8.31 J/mol ? K)
A) 4.7 K B) 5.2 K C) 5.8 J D) 6.8 K E) 9.3 K
A person having a near point of 25 cm uses a magnifying glass with a focal length of 10 cm. What is the angular magnification of the glass for that person when her eyes are focused at infinity?
A) 1.5 B) 2.5 C) 3.5 D) 4.5