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2 oxygen,4 hydrogen, 4 hydrogen, and 2 oxygen so overall 12

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13y ago

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2h2o 2h2 plus o2?

Water can be broken down to oxygen and hydrogen and hydrogen can be ignited in oxygen to form water. 2H2O --> 2H2 + O2 (takes energy) 2H2 + O2 --> 2H2O (releases energy)


How do you balance 2H2 O2 2H2O O2?

2H2O2 ==> 2H2O + O2 the equation is balanced


Is 2H2 2O2 2H2O balanced?

NO!!! 2H2 means that there are four ( 2 x 2) hydrogen atoms , in two molecules each of two atoms. Similarly 2O2 means that there are four ( 2 x 2) oxygen atoms , in two molecules each of two atoms. However, 2H2O means H2O + H2O . Each H2O is H-O-H plus H-O-H This means that there are 4 hydrogen atoms , but only 2 oxygen atoms. So a reaction is 2H2 + 2O2 = 2H2O + O2 ( 2 oxygen atoms (O=O) remain unused). More correctly this would be written as 2H2(g) + O2(g) = 2H2O(l)


Is 2H2 O2---2H20 balanced?

2H2 + O2 ---> 2H20 is balanced when total numbers of atoms of EACH element seperately are equal on both sides ('Reactant' and 'Product' side): Left (2x H2=) 4 H atoms and (1x2 O=) 2 O atoms Right (2x H2=) 4 H's and (2x1 O=) 2 O's


How many moles of h2o are produced when 2.55 moles of O2 react?

4


What is the balanced equation for the reaction between 02 and H2?

2h2 + o2 -> 2h2o All letters capitalized!!


What type of reaction is 2H2O 2H2 plus O2?

2H2O--->2H2 + O2 is a redox reaction because electrons are exchanged during electrolysis.


Equation for the combustion of hydrogen?

2h2 + o2 ----> 2h2o


Is it correct to say that chemical changes are not reverisble but phycial changes are?

No, chemical reactions can be reversed. For example: 2H2O -> 2H2 + O2 can change back, 2H2 + O2 -> 2H2O


Balance the equation1.H2+ O2=H2O?

= H2+O2 =2H2+O2=2H2O


What is the Balanced equation for the combustion reaction of pure oxygen and pure hydrogen to produce water?

O2(g)+2H2(g) -> 2H2O(g) (Remmeber heat/energy must also go into the reaction.) 2H2 + O2 ---> 2H2O


What is the relationship between the equations for the decomposition of water and the reaction of hydrogen and oxygen to form water?

They are reversible reactions. 2H2 + O2 ----> 2H2O (formation of water) 2H2O ----> 2H2 + O2 (decomposition of water)