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alexira [117]
3 years ago
6

NEED HELP ASAP PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!
Cassie has a magnet that she holds over an iron nail. The nail moves toward the magnet before the magnet touches it.

Which of the following is true about magnetism?
A.
Magnetism is a force that must directly touch an object in order to move it.
B.
Magnetism is a force that acts at a distance and cannot be seen.
C.
Magnetism is not a force, and therefore it cannot move an object.
D.
Magnetism is a force that can be seen in the air as it moves an object.
Chemistry
1 answer:
erastovalidia [21]3 years ago
5 0

i think it is B. Magnetism is a force that acts at a distance and cannot be seen.

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Given the two reactions PbCl2(aq)⇌Pb2+(aq)+2Cl−(aq), K3 = 1.89×10−10, and AgCl(aq)⇌Ag+(aq)+Cl−(aq), K4 = 1.25×10−4, what is the
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AgCl(aq)⇌Ag+(aq)+Cl−(aq)           K_4 = 1.25\times 10^{-4}

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