The answer is 14.3 g

. Please let me know if I should elaborate on any of the steps below.
They have similar properties because they have the same number of valence electrons
Answer:
Mantle convection is the very slow creeping motion of Earth's solid silicate mantle caused by convection currents carrying heat from the interior to the planet's surface. The Earth's surface lithosphere rides atop the asthenosphere and the two form the components of the upper mantle.
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Answer: No
Explanation: The reason for this is because calcite has a hardness of 9 while feldspar has a hardness of 21. Calcite can scratch Gypsum which has a hardness of 3.
Answer:
C Is the correct answer!
Took the Cumulative Exam Review :/