mercury oxide docomposes to hydrogen and oxygen.The molar mass of HgO is 216.59 mol.The molar mass of O2 is 32 g/mol.How many mols are needed to produce 250 grams of oxygen?

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mercury oxide docomposes to hydrogen and oxygen.The molar mass of HgO is 216.59 mol.The molar mass of O2 is 32 g/mol.How many mols are needed to produce 250 grams of oxygen?

Chemistry
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Do you mean decomposes, \[2HgO -> O_2 + H_2\] this is your chemical equation. We're given molar mass for HgO which is 216.59 mol Molar mass of O2 is 32 g/mol, and we're given 250 g of oxygen We need to find moles of oxygen so we just need this formula \[m = n \times M\] where n represents number of moles, m is the mass, and molar mass is M.\[n = \frac{ m }{ M }\] we're given both the mass and molar mass of oxygen, so just plug in the values and you're done.
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