Q6. There are two moles of H 2 for every one mole O 2. Every chemical equations must be balanced. The balanced equation for water has several mole ratios in it. When manganese dioxide is added to 2 moles of hydrogen peroxide, 1 mole of oxygen and 2 moles of water are formed. When these two conditions are met, the equation is said to be balanced. It means that the law of conservation of mass is obeyed. What does it mean to be balanced? These are homework exercises to accompany the Textmap created for "General Chemistry: Principles and Modern Applications " by Petrucci et al. The formula for water is [math]\text{H}_2\text{O}[/math], which means two hydrogen atoms and one oxygen. Mass is conserved rather than created or destroyed so when a chemical equation is written, it must be balanced so that there is the same amount of reactants going in as yielded product. Complementary General Chemistry question banks can be found for other Textmaps and can be accessed here.In addition to these publicly available questions, access to private problems bank for use in exams and … H2S+O2-->H2O + SO2 3BaCl2+Al2(SO4)3-->2AlCl3+3BaSO4 K+2H2O-->2KOH+H2 . Manganese dioxide catalyzes the decomposition of hydrogen peroxide. ... A balanced chemical equation is one in which number of atoms taking part in chemical equation are same i.e reactants, products on both sides of equation. It is very tough to balance this equation. The unbalanced equation for this reaction is as follows: C6H12O6 + O2 → CO2 + H2O a. O2 + 2H2O. FeSO4 + KMnO4 + H2SO4 = Fe2(SO4)3 + MnSO4 + H2O + K2SO4 is a Redox reaction. This means that a chemical equation must have the same number of atoms of each element on both side of the equation. to balance this equation we are using ion electron method. ... Ans. The equation is balanced by changing the scalar numbers that precede each part of the equation. The balanced chemical equation for the decomposition of hydrogen peroxide is thus 2H2O2 ? Adding an additional atom of oxygen to a water molecule creates a new compound -- although it still just contains hydrogen and oxygen, like water (H2O… The law of conservation of mass states that in an ordinary chemical reaction, matter is neither created nor destroyed, that is, a chemical equation must have the same number of atoms of each element on both sides of the equation. 1 b. Explanation: Hydrogen peroxide, H2O2, decomposes naturally at a very slow rate to form oxygen gas and water. The chemical formula of hydrogen peroxide is H2O2, the chemical formula for oxygen is O2, and the chemical formula for water is H2O. Also the sum of the charges on one side of the equation must be equal to the sum of the charges on the other side. Balance the following chemical equations. We calculate the molecular mass of water by adding the atomic masses of the atoms. 2 c. 3 d. 6 e. 12 Diborane, B2H6, can be prepared according to the following equation: 3 NaBH4 (aq) + 4 BF3 → 3 NaBF4 (aq) + 2 B2H 6 If 10.5 moles of NaBF4 are produced in this reaction, how many hydrogen atoms in B 2H6 are also produced?