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The number 2 IN FRONT is called a coefficient, and it tells you that there are two water molecules.
The number BETWEEN the "H" and the "O" tells you that in one single molecule of water, it is made of 2 atoms of hydrogen, and 1 atom of oxygen.
For example, if hydrogen gas (H2) is combined oxygen (O2), water (H2O) is formed. Because the formula is H2, two little "2" tells us that hydrogen gas is composed of 2 atoms of hydrogen. Same with oxygen -- O2 is made of two atoms of oxygen. The balanced equation for the reaction to form water is: 2H2 + O2 ---> 2H2O
What the numbers in front of the molecules mean is that 2 molecules of hydrogen combine with one molecule of oxygen to form 2 molecules of water.
See the Related Questions about balanced equations and stoichiometry for more about how coefficients are used and what they tell us about a reaction.
Wiki User
∙ 16y ago
Wiki User
∙ 9y ago2 represents number of moles. It means there are 2 moles of water molecule.
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How do you balance KO2 plus H2O equals KOH plus O2?
4KO2(S) + 2H2O(l) ----> 4KOH(aq) + 3O2(g)There you are.
What is the coefficient for H20 when the following equation is balanced K plus H20 plus KOH plus H2?
2K + 2H2O --> 2KOH + H2 The balanced equation shows that there is a 2 in front of water.
How many oxegyn atoms does 2H2O have?
2
What is the common name of 2H2O?
Hydrogen peroxide ... but its written as H2O2.
How many atoms are in O2 2H2 2H2O?
2 oxygen,4 hydrogen, 4 hydrogen, and 2 oxygen so overall 12
How do you balance KO2 plus H2O equals KOH plus O2?
4KO2(S) + 2H2O(l) ----> 4KOH(aq) + 3O2(g)There you are.
What is the chemical name of 2H2O What is its common name?
Trihydrate - basically 3 molecules of water (just as dihydrate is 2H2O) Unless you're referring to the molecule 3H2O used in measuring the total body water - in that case it's 'tritiated water'
What is the coefficient for H20 when the following equation is balanced K plus H20 plus KOH plus H2?
2K + 2H2O --> 2KOH + H2 The balanced equation shows that there is a 2 in front of water.
What is the chemical equation of two water molecules?
2H2O If H2O is a single water molecule, then placing the "2" in-front of it indicates that there are two whole molecules of water.
What is the formula and chemical name of gypsum?
CaSO4 2H2O
How many oxegyn atoms does 2H2O have?
2
What is the chemical name of plaster of Paris?
Plaster of Paris is a type of building material based on calcium sulphate hemihaydrate CaSO4·1/2H2O. It is created by heating gypsum to about 150 °C. 2 CaSO4·2H2O → (2 CaSO4·H2O) + 3 H2O (released as steam).
What is the common name of 2H2O?
Hydrogen peroxide ... but its written as H2O2.
What name describes the product 2H2O?
Two molecules of water.
How many atoms are in O2 2H2 2H2O?
2 oxygen,4 hydrogen, 4 hydrogen, and 2 oxygen so overall 12
What is the name of the compound NaNO2 2H2O?
sodium nitrite
How do you 'NH4'2SO4 plus Sr'OH'2?
SrSO4 + 2H2O + 2NH3
