Oxygen molecules are 16 times more massive than hydrogen molecules. At a given temperature, the average molecular kinetic energy of oxygen molecules, compared to that of hydrogen molecules,
A) is greater.
B) is less.
C) is the same.
D) cannot be determined without knowing the pressure and volume.
C
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A rectangular loop of wire measures 1.0 m by 1.0 cm. If a 7.0-A current flows through the wire, what is the magnitude of the magnetic force on the centermost 1.0-cm segment of the 1.0-m side of the loop? (?0 = 4? × 10-7 T ? m/A)
A) 4.9 × 10-6 N B) 9.8 × 10-8 N C) 9.8 × 10-6 N D) 7.8 × 10-7 N
Recyclables are more inconvenient for the consumer to deal with than throwaways
What will be an ideal response?
A gallon container is filled with gasoline. How many gallons are lost if the temperature increases by 25°F? (The volume expansion of gasoline is 9.6 × 10^-4 (°C)-1.) (Neglect the change in volume of the container.)
a. 2.4 × 10^-2 b. 1.3 × 10^-2 c. 3.6 × 10^-2 d. 4.8 × 10^-2 e. 9.6 × 10^-2
The average mass of the atoms of an element in naturally occurring samples is called the ______________ mass of the element
a. atomic b. average c. relative d. molecular