write down any 10 balanced chemical reaction.
Answers
Explanation:
Zn + H2SO4 → ZnSO4 + H2 ↑
AgNO3 + NaCl → AgCl + NaNO3
CaO + H2O → Ca(OH)2 + Heat.
2Fe(s) + S(s) → FeS (s)
NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l)
Cl2 + 2KBr → 2KCl + Br2
H2S + Cl2 → 2HCl + S.
Fe2O3 + 3CO → 2Fe + 3CO2↑
Answer:
In chemistry, it's important to be able to recognize when equations are balanced, when they are not balanced, and how to balance them.
A balanced equation contains the same number of each type of atoms on both the left and right sides of the reaction arrow.
To write a balanced equation, the reactants go on the left side of the arrow, while the products go on the right side of the arrow.
Coefficients (number in front of a chemical formula) indicate moles of a compound. Subscripts (numbers below an atom) indicate the number of atoms in a single molecule.
To calculate the number of atoms, multiply the coefficient and the subscript. If the atom appears in more than one reactant or product, add together all the atoms on each side of the arrow.
If there is only one mole or one atom, then the coefficient or subscript "1" is implied, but is not written.
A balanced equation is reduced to the lowest whole number coefficients. So, if all the coefficients can be divided by 2 or 3, do this before finalizing the reaction.