On Mars gravity is one-third that on Earth.What would be the weight on Mars of a person who has a weight of 150 pounds (lb) on Earth?
A) 50 lb
B) 150 lb
C) 450 lb
D) 300 lb
Correct Answer:
Verified
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A)The
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Q62: Which of the following represents an element?
A)HF
B)Se
C)F₂
D)CO₂
Q63: What is the chemical symbol for sodium?
A)Na
B)K
C)S
D)Sm
Q64: _ are pure substances.
A)Homogeneous mixtures and elements
B)Elements
Q65: What is the chemical symbol for potassium?
A)P
B)Po
C)Pu
D)K
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