Answer:
2.1 mol
Explanation:
68.1g / 34.1 g/mol = 2.1mol
Comets are usually formed of ice and other suave debris, while asteroids typically contain metals.
Answer:
An oxidation reaction
Explanation:
Only one reaction happened and no reduction occurs.Hence, this the redox reaction does not happen.
Answer:
Each element has unique physical properties such as density, melting point, boiling point, etc. These properties can be used to identify an element using a reference book that contains such information about each element. Flame tests, atomic spectra, and spectroscopy can be used to identify some elements.
Explanation:
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