Problem: A hydrogen-filled balloon was ignited and 1.90 g of hydrogen reacted with 15.2 g of oxygen.How many grams of water vapor were formed? (Assume that water vapor is the only product.)

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We’re being asked to determine how many grams of water vapor are formed assuming it is the only product in the reaction of 1.90 g of hydrogen, H2 and 15.2 g of Oxygen, O2.


Recall that the Law of Conservation of mass states that matter cannot be created or destroyed.  


This means that the amount of reactants will be the same amount of the products.


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Problem Details

A hydrogen-filled balloon was ignited and 1.90 g of hydrogen reacted with 15.2 g of oxygen.

How many grams of water vapor were formed? (Assume that water vapor is the only product.)

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

Our tutors have indicated that to solve this problem you will need to apply the Law of Conservation of Mass concept. You can view video lessons to learn Law of Conservation of Mass. Or if you need more Law of Conservation of Mass practice, you can also practice Law of Conservation of Mass practice problems.

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