Homework Help: chemistry 101

Posted by ABCD on Friday, July 8, 2011 at 9:10pm.

How many molecules of oxygen are produced from the decomposition of 8.75 g of hydrogen peroxide in the following equation Mg + H2O2 --> MgH2 + O2

options:

8.75 x 1024

6.02 x 1023

1.55 x 1022

5.27 x 1024

1.55 x 1023

chemistry 101 - DrBob222, Friday, July 8, 2011 at 10:31pm
Here is a worked example of a stoichiometry problem. Just follow the steps.
http://www.jiskha.com/science/chemistry/stoichiometry.html
chemistry 101 - Neha, Sunday, July 10, 2011 at 12:13pm
8.75/34.02 (molar mass of H2O2) = .257 mol H2O2

Since the mol ratio b/t H2O2 and O2 is 1:1, there is also .257 mol O2

.257 mol * 6.02 * 10^23 = 1.55 * 10^24 molecules so the 3rd option.

Answer this Question

Related Questions

CHEMISTRY - The following reaction represents the decomposition of hydrogen ...
Chemistry - The following reaction represents the decomposition of hydrogen ...
Chemistry - Mole Ratio - How many moles of oxygen are produced from the ...
Chemistry - The following reaction represents the decomposition of hydrogen ...
Chemistry - Oxygen gas and water are produced by the decomposition of hydrogen ...
chemistry HELP - hydrogen peroxide (H2O2) decomposes into water and oxygen. what...
Chemistry - Hydrogen peroxide decomposes into water and oxygen. What amount of ...
moles to moles - Two molecules of hydrogen react with one molecule of oxygen to ...
Chemistry - The following reaction represents the decomposition for water: 2H2O...
Chemistry - If a catalyst is introduced to ecxellaerate decomposition of ...

For Further Reading

First Name:
School Subject:
Answer: