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Is the number that appears before a formula in a chemical equations?
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What is understood if no coefficient is written before a formula in a chemical equation?
if no number is written following a chemical symbol in a chemical formula, it is understood the number of atoms of that element is one
Why balanced equations for Stoichiometry to work?
You must balance chemical equations out before converting because if you don't, you will write down a wrong mole value somewhere along the line when you convert between units.
Why chemical equations need to be balanced according to the law of the conservation of mass?
becasuse atoms are never gained or lost in a chemical reaction
Can subscripts in a chemical formula be fractions?
The Subscripts in a Chemical formula explain how the atoms in that compound are chemically bonded. As a fraction of an atom cannot bond, the subscripts cannot be fractions. Coefficients, however which go before a chemical formula in chemical equations may be fractions. This is because they explain the ratio of the number of moles of each species required for the reaction and it is possible to have a fraction of a mole of something. The Subscripts in a Chemical formula explain how the atoms in that compound are chemically bonded. As a fraction of an atom cannot bond, the subscripts cannot be fractions. Coefficients, however which go before a chemical formula in chemical equations may be fractions. This is because they explain the ratio of the number of moles of each species required for the reaction and it is possible to have a fraction of a mole of something.
Write the formula for NH4 and OH?
NH4OH NH4 has a charge of 1+ and OH has a charge of 1-
What does the 2 in front of the chemical formula for silver nitrate mean?
The chemical formula of silver nitrate is AgNO3. Any 2 before !
Are chemical equations balanced by changing the subscripts of the molecules?
No - they are usually balanced by changing the numbers before the molecules.
What is understood if no coefficient is written before a formula in a chemical equation?
if no number is written following a chemical symbol in a chemical formula, it is understood the number of atoms of that element is one
How does a subscript in a chemical formula affect balancing chemical equation?
How does a subscript affect the element just before it?
Is the number before a chemical formula indicates how many molecules are involved in a chemical reaction?
Yes, that is true.
What means a number before a chemical formula for instance 3co2?
Coefficients :)
what number represents the subscript in the formula shown?
The letter or letters that represent an element are called its atomic symbol. The numbers appearing as subscripts in the chemical formula indicate the number of atoms of the element immediately before the subscript. If no subscript appears, one atom of that element is present.
Why balanced equations for Stoichiometry to work?
You must balance chemical equations out before converting because if you don't, you will write down a wrong mole value somewhere along the line when you convert between units.
Is Na2S equal to 2Na?
The meaning of 2Na and Na2 is similar: two sodium atoms; in a chemical formula is used Na2.Before a chemical formula is used 2 Na.
What is a coefficicent?
In math, it is the number that comes before the variable, such as x. In chemistry, it is the number that comes before the chemical formula.
Why chemical equations need to be balanced according to the law of the conservation of mass?
becasuse atoms are never gained or lost in a chemical reaction
What information in a balanced chemical equation shows how many moles of a reactant are involed in the reaction?
The number before the chemical formula of the reactant.
