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OpenStudy (dmndlife24):
Let me attach the file...
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OpenStudy (dmndlife24):
OpenStudy (anonymous):
You need help with all of it?
OpenStudy (dmndlife24):
Mostly on just questions 2 and 4
OpenStudy (anonymous):
Yea, I am here now.
OpenStudy (anonymous):
2. Fingernail can scratch any minerals with hardness up to 2.5
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OpenStudy (dmndlife24):
So only gypsum and talc
OpenStudy (anonymous):
Sandpaper requires hard minerals in order to strengthen the grit.
OpenStudy (anonymous):
Yep, it would only be gypsum and talc.
OpenStudy (dmndlife24):
Ok thanks so much
OpenStudy (anonymous):
No problem!
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