hallo! heres you answer
^Extrusive igneous rocks are formed from the cooling lava that flows above the crust and Intrusive Igneous rocks are formed within the earth's interior.^
is the correct one because
-Intrusive, or plutonic, igneous rock forms when magma is trapped deep inside the Earth. ... Intrusive rocks have a coarse grained texture.
- Extrusive Igneous Rocks: Extrusive, or volcanic, igneous rock is produced when magma exits and cools above (or very near) the Earth's surface.
Covalent compounds generally have low boiling and melting points, and are found in all three physical states at room temperature. Covalent compounds do not conduct electricity; this is because covalent compounds do not have charged particles capable of transporting electrons.
Answer:
1.22 mol Ca
Explanation:
Molar mass (Ca)=40.1 g/mol
49.0 g* 1 mol/40.1 g ≈ 1.22 mol Ca
<span>The correct answer is:
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4) "The valence electrons are given up by the Na and gained by the F. "
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