Sphalerite has the following properties:

• found in nature

• not made by organisms

. pure substance

• fixed crystal structure

Solid

Is sphalerite a mineral?

yes

no

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What coefficients would balance the following equation? __Al + __O2 → __Al2O3 Question 4 options: (A) 2Al + 3O2 → 1Al2O3 (B) 2Al + 3O2 → 2Al2O3 (C) 3Al + 3O2 → 2Al2O3 (D) 4Al + 3O2 → 2Al2O3

If the absolute temperature of a gas is quadrupled, what happens to the root-mean-square speed of the molecules?

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