What is the molar mass of oxygen, o2? (round to four significant figures only.)

Explanation:

According to avogadro's law, 1 mole of every substance weighs equal to the molecular mass and contains avogadro's number of particles.

1 mole of weighs= 32.0 g

Significant digits are each of the digits of a number that are used to express a number to the required degree of accuracy, starting from the first non-zero digit with exponents raised to the power of 10.

The number is written in scientific notation as   contains 4 significant digits.

Thus 32 can be expressed as   contains 4 significant digits.

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explanation:

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answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).