The scientist wants to compare the ink on the document with the ink in three different printers. Describe how she could set up a paper chromatography experiment to compare the inks.

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7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

What is the relationship of air masses and the temperature of oceans?

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.