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Physics, 01.04.2021 01:00 jholland03
A mineral can be scratched by calcite but not by a fingernail. What is its hardness? pls I need to find the answer it is taking me abot 17 min to answer this question and i can't
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A mineral can be scratched by calcite but not by a fingernail. What is its hardness?
pls I need to...
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