H2 is a hydrogen molecule made of two hydrogen atoms bonded together.
The preceding two refers to the number of moles of H2 molecules in the chemical equation.
The balanced symbol equation for making water is: 2H₂ + O₂ → 2H₂O.
He. Helium is a noble gas, meaning it is inert and cannot bond with any other atom.
A chemical symbol is a shorthand way to represent an element. It consists of one or two letters that help identify the element in the periodic table and chemical formulas. For example, the chemical symbol for oxygen is "O" and for gold is "Au."
Do you mean formula
The balanced chemical equation for making water from hydrogen and oxygen is: 2H₂(g) + O₂(g) → 2H₂O(l)
The balanced symbol equation for making water is: 2H₂ + O₂ → 2H₂O.
if you mean what is the chemical with the symbol O it is oxygen if not i don't know
He. Helium is a noble gas, meaning it is inert and cannot bond with any other atom.
The MOLAR RATIO or Coefficient. Do NOT confuse with numbers AFTER the chemical symbols. e.g. 2NaOH + H2SO4 = Na2SO4 + 2H2O The Molar Ratios (Coefficients) are in order from left to right ' 2:1 :: 1:2 '. In Na2SO4 the numbers '2' refers to TWO sodium atoms And '4' refers to FOUR oxygen atoms. In '2H2O'. The left hand '2' refers to TWO molar ratios. The '2' to the right of 'H' (Hydrogen) refers to each molecule having two (2) hydrogen atoms. NB When no number is shown, read it as '1'(one). This applies to molar ratios and to atom numbers in a molecule. e.g. NaOH ; No numbers, so there is only ONE of each atom. Similarly, H2O means only ONE(1) atom of oxygen, in the molecule.
No such element as 'silicicon'. If you mean 'silicon' , then its chemical symbol is 'Si'.
if you mean what is the chemical with the symbol O it is oxygen if not i don't know
The state symbol aq means it dissolves in water when it is written after a chemical compound in a chemical reaction.
AU is the chemical symbol for gold on the periodic table.
A chemical symbol is a shorthand way to represent an element. It consists of one or two letters that help identify the element in the periodic table and chemical formulas. For example, the chemical symbol for oxygen is "O" and for gold is "Au."
If you mean its chemical symbol, that is Fe.
lithium is Li
Do you mean formula