4 gram of NaOH is dissolved in
500 ml of water. What is the
concentration of NaOH in ppm....
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The fact that the total amount of energy in a system remains constant is a(n)
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Is a chemical message sent by another individual.
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Which radioisotope is used to date fossils? a. oxygen-16 b. carbon-14 c. uranium-238 d. carbon-12
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