0
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.
What else can I help you with?
What is the common name of 2H2O?
Hydrogen peroxide ... but its written as H2O2.
What is the coefficient for H20 when the following equation is balanced K plus H20 plus KOH plus H2?
2K(s) + 2H2O(l) = 2KOH(aq) + H2(g) The eq'n is balanced. The coefficients ( molar ratios) in order of the reation eq'n are 2:2:::2:1
How do you balance KO2 plus H2O equals KOH plus O2?
To balance the equation KO2 + H2O -> KOH + O2, start by balancing the oxygen atoms, then balance the potassium atoms, and finally balance the hydrogen atoms. The balanced equation is 2KO2 + 2H2O -> 2KOH + O2.
How many atoms are in O2 2H2 2H2O?
2 oxygen,4 hydrogen, 4 hydrogen, and 2 oxygen so overall 12
How many oxegyn atoms does 2H2O have?
Two water molecules (2H2O) have four oxygen atoms in total.
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 common name of 2H2O?
Hydrogen peroxide ... but its written as H2O2.
What is the coefficient for H20 when the following equation is balanced K plus H20 plus KOH plus H2?
2K(s) + 2H2O(l) = 2KOH(aq) + H2(g) The eq'n is balanced. The coefficients ( molar ratios) in order of the reation eq'n are 2:2:::2:1
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.
How do you balance KO2 plus H2O equals KOH plus O2?
To balance the equation KO2 + H2O -> KOH + O2, start by balancing the oxygen atoms, then balance the potassium atoms, and finally balance the hydrogen atoms. The balanced equation is 2KO2 + 2H2O -> 2KOH + O2.
What is the formula and chemical name of gypsum?
CaSO4 2H2O
How many atoms are in O2 2H2 2H2O?
2 oxygen,4 hydrogen, 4 hydrogen, and 2 oxygen so overall 12
How many oxegyn atoms does 2H2O have?
Two water molecules (2H2O) have four oxygen atoms in total.
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).
Is H2SO4 plus 2LiOH equal Li2SO4 plus 2H2O balanced?
No, the equation is not balanced. To balance it, you need to ensure that the number of each type of atom is the same on both sides of the equation. In this case, you need to add a coefficient of 1 in front of H2SO4, 2 in front of LiOH, Li2SO4, and H2O to balance the equation: H2SO4 + 2LiOH = Li2SO4 + 2H2O.
What name describes the product 2H2O?
Two molecules of water.
How many atoms of each type are represented in 2H2O?
In 2H2O, there are 4 hydrogen atoms (2 from each H2 molecule) and 2 oxygen atoms.
