When sodium and chlorine react to form sodium chloride, an ionic compound,
a. each sodium atom loses two electrons.
b. each sodium atom loses one electron.
c. each chlorine atom loses one electron.
d. each chlorine atom loses two electrons.
b
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If M = 0.50 kg, L = 1.2 m, and the mass of each connecting rod shown is negligible, what is the rotational inertia about an axis perpendicular to the paper through the center of mass? Treat the mass as particles
?
?
a.
3.7 kg?m2
b.
2.8 kg?m2
c.
3.2 kg?m2
d.
2.3 kg?m2
e.
3.9 kg?m2
The scientific method is a simple, mechanical way of grinding facts into understanding
a. True b. False Indicate whether the statement is true or false
Electromagnetic waves are
a. longitudinal. b. reverse. c. transverse. d. a combination of these.
The mass density of pure water is 
If the molecular mass of water is 18.0 u, how many water molecules are in spherical water balloon of radius 1.0 cm?
a. 
b. 
c. 
d. 