19. Which of the following is NOT an example of physical protection for corrosion?
A Painting
C. Electroplating
B. Greasing
D. Attaching the metal to the negative terminal of battery
A Painting
C. Electroplating
B. Greasing
D. Attaching the metal to the negative terminal of battery
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Answer:
19. D. Attaching the metal to the negative
terminal of battery
Explanation:
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Proton mass in grams 1.673 × 10^-24
Proton mass in amu 1.0073 or 1
Neutron mass in grams 1.675 × 10^-24
Neutron mass in amu 1.0087 or 1