How many oxygen atoms are in 2.30 g of quartz?

4.61 * 10²² oxygen atoms

Explanation:

MM = AtomicMass of Si + 2 * AtomicMass of O

MM = 28.08 + 2 * 16

MM =  60.08 g/mol

2.30 g * = 0.0383 mol

0.0383 mol SiO₂ * = 4.61 * 10²² atoms of O

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2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.