According to Moh's hardness scale, your fingernail would be rated as 2.5. Juan and Carol are trying to identify an unknown miner

Question

3 years ago

5

According to Moh's hardness scale, your fingernail would be rated as 2.5. Juan and Carol are trying to identify an unknown miner

al. Carol can scratch the mineral sample with her fingernail. Juan and Carol know the mineral MUST be one of these four choices.
Based on the scratch test, the mineral is

A) apatite.
B) calcite.
C) gypsum.
D) pyrite.

Biology

2 answers:

ruslelena [56] · Answer 1 · 2022-06-20T12:30:56+03:00

ruslelena [56]3 years ago

8 0

I think it is c gypsum

Nataly [62] · Answer 2 · 2022-06-20T13:55:58+03:00

Nataly [62]3 years ago

3 0

Of the choices, the mineral is gypsum. Your fingernail, hardness 2.5, can scratch a mineral with a hardness that is less than 2.5. Of the answer choices, the only possible answer is gypsum.

The answer is C. gypsum