Problem: Given the following reaction:2H2O2 → 2H2O + O2How many moles of H2O will be produced from 42.0 g of H 2O2?_____ moles (round to three significant figures)

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We’re being asked to calculate the moles of H2O, which will be formed from 42.0 g of H2O2.  The flow for this problem will be like this:


Mass of H2O(molar mass of H2O2)→ Moles of H2O2(mole-to-mole comparison) → Moles of H2O

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Problem Details

Given the following reaction:

2H2O→ 2H2O + O2

How many moles of H2O will be produced from 42.0 g of H 2O2?

_____ moles (round to three significant figures)

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What scientific concept do you need to know in order to solve this problem?

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