Answer:
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<em><u>It is a rocky terrestrial planet. 71% of earth is made up of water so the world is mostly covered by oceans. </u></em></h2><h2>
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<em><u>Your brainly friend ( lauralit1 )</u></em>
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I think that it is half are required to react with 40 g of HF.
Answer:
Characteristics such as melting point, boiling point, density, solubility, color, odor, etc. are physical properties. Properties that describe how a substance changes identity to produce a new substance are chemical properties. ... Physical and chemical properties can be used to classify a substance as ionic or molecular.