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Author Question: The waves of an earthquake are detected by an instrument called a a. seismometer. b. seismogram. ... (Read 62 times)

nevelica

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on: Jul 28, 2018
The waves of an earthquake are detected by an instrument called a
 a. seismometer.
  b. seismogram.
  c. seismograph.
  d. seismoscope.

Question 2

Which of the following polyatomic ions has a single minus charge?
 a. Acetate
  b. Sulfate
  c. Phosphate
  d. Ammonium


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pikon

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Reply #1 on: Jul 28, 2018
Answer to Question 1

c

Answer to Question 2

a


nevelica

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Reply 2 on: Jul 28, 2018
:D TYSM

CAPTAINAMERICA

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Reply 3 on: Yesterday
Gracias!

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