QUESTION 1 - What mineral was used to make sharp tools?
QUESTION 2 -Where we minerals found?...
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How does the principle of electromagnetism explain the interaction between earth’s magnetic field and the solar wind?
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Apiece of copper has a temperature of 75.6 0c. when the metal is placed in 100.0 grams of water at 19.1 0c, the temperature rises by 5.5 0c. what is the mass of the metal?
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Chemistry, 23.06.2019 01:00
What is the chemical name of the compound ti2o3? use the list of polyatomic ions and the periodic table to you answer.
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