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When the reaction is balancedthe number in front of hydrogen gas will be?
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What is the name for the 2 in front of 2H2O?
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 ---> 2H2OWhat 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.
Why does the number in front of of a chemical have to be changed to balance an equation?
After a chemical reaction the reactants are transformed in other compounds - the products.
What information in a balance chemical equation shows how many moles of a reactant are involved in the reaction?
The coefficient (the number in front of the reactant) tells you the number of moles involved.
What is the number written in front of a chemical formula?
The number written in front of a chemical formula is called the coefficient. This represents the number of molecules of the substance in the chemical formula. For example, 8SO3 tells you that there are 8 molecules of SO3 or sulfur trioxide.
What is ment by the term coefficient in relation to a chemical reaction?
A coefficient is a number written in front of a chemical formula when balancing a chemical equation. The coefficient can represent the number of atoms, molecules, formula units, or moles of the substance.
What is the name of a number in front of a chemical formula in an equation called?
This is the number of molecules or atoms involved in the reaction.
What is the name for the 2 in front of 2H2O?
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 ---> 2H2OWhat 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 is a coefficient in physical science?
a coefficent in physical science means:a number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product that are involved in a reaction
Why does the number in front of of a chemical have to be changed to balance an equation?
After a chemical reaction the reactants are transformed in other compounds - the products.
What information in a balance chemical equation shows how many moles of a reactant are involved in the reaction?
The coefficient (the number in front of the reactant) tells you the number of moles involved.
The number in front of a chemical formula that tells how many molecules or atoms of each reactant take part in a reaction called?
subscript
What are the elements' names and how many atoms are in 2H2SO4?
H2SO4 is Sulfuric Acid. If it has the number 2 in front of the whole compound it means there are two molecules in the reaction. The number of atoms in 1 molecule is (2 x hydrogen, 1 x sulfur, 4 x oxygen), therefore in two molecules there are 4, 2 and 8 respectively which gives a total of 14 atoms.
What is the number written in front of a chemical formula?
The number written in front of a chemical formula is called the coefficient. This represents the number of molecules of the substance in the chemical formula. For example, 8SO3 tells you that there are 8 molecules of SO3 or sulfur trioxide.
How does a coefficient in front of a formula affect the number of each type of atom in the formula?
the coefficient shows how many molecules are in the reaction. is it used to balance the equation
What is 2h2o2?
O2 is an oxygen molecule, H2O is a water molecule. The 2 in front of each means that you have 2 moles of each
What does chemically joining oxygen and hydrogen make?
To write the chemical reaction you would place the reactants (the substances reacting) on the left with an arrow pointing to the the products (the substances being formed). Given this information, one might guess that the reaction to form water is written: H + O H2O However there are 2 problems with this chemical reaction. First, because atoms like to have full valence shells, single H or O atoms are rare (and unhappy) creatures. As we saw in the previous lesson, both hydrogen and oxygen react with themselves to form the molecules H2 and O2, respectively. These hydrogen and oxygen molecules are much more common. Given this correction, one might guess that the reaction looks like this: H2 + O2 H2O But we still have one problem. As written, this equation tells us that 1 hydrogen molecule (with 2 H atoms) reacts with 1 oxygen molecule (with 2 O atoms) to form 1 water molecule (with 2 H atoms and 1 O atom). In other words, we seem to have lost 1 O atom along the way! To write a chemical reaction correctly, the number of atoms on the left side of a chemical equation has to be precisely balanced with the atoms on the right side of the equation. How does this happen in our example? In actuality, the O atom that we 'lost' reacts with a 2nd molecule of hydrogen to form a second molecule of water. The reaction is therefore written: 2H2 + O2 2H2O In the chemical reaction above, the number in front of the molecule (called a coefficient) indicates how many molecules participate in the reaction. A simulation of the reaction can be viewed by clicking below (the atoms are represented as spheres in the animation: red = hydrogen, blue = oxygen http://web.jjay.cuny.edu/~acarpi/NSC/6-react.htm
What is ment by the term coefficient in relation to a chemical reaction?
A coefficient is a number written in front of a chemical formula when balancing a chemical equation. The coefficient can represent the number of atoms, molecules, formula units, or moles of the substance.
