Grams to Moles to Molecules Conversions
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Grams to Moles to Molecules Conversions

[From: ] [author: ] [Date: 12-08-13] [Hit: ]
please help!-stoichiometry.87 g Na x (1mole Na/ 23 g Na) x (1 Mole H2/2 mole Na)(6.1.......
The question states: Solid sodium reacts violently with water, producing heat, hydrogen gas, and sodium hydroxide. How many molecules of hydrogen gas are formed when 87g of sodium are added to water?
2Na + 2H2O ----> 2NaOH + H2
Do I convert the grams of sodium to moles and then the moles of hydrogen to molecules? I don't know how to do this, please help!

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stoichiometry. start with 87 g Na


87 g Na x (1mole Na/ 23 g Na) x (1 Mole H2/2 mole Na)(6.02x10^23 molecules H2/1 mole)=

1.14x10^24 molecules of H2
1
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