From a balanced chemical equation, it is possible to determine the relative mass of each of the reactants and products.Question 9Answera.Trueb.False

How does a balanced chemical equation show the conservation of mass?A.It shows that the mass of the products is greater than the mass of the reactants when a reaction increases the moles of substances.B.It shows that the number of each type of atom stays the same.C.It shows that the total number of moles of substances stays the same.D.It shows that the mass of the reactants is greater than the mass of the products when gases are produced by the reaction.

Mass is conserved in a chemical reaction, which of these is TRUE about the mass of the products?  *1 pointless than the mass of the reactantsequals to the mass of the reactantgreater than the mass of the reactantsnot related to the mass of the reactants

To solve stoichiometric calculations balancing the chemical equation is important.Question 4Answera.Trueb.False

Consider the reaction shown in the following balanced equation:2 Cu2S (s) + 3 O2 (g) → 2 Cu2O (s) + 2 SO2 (g)You have 1.00 mole each of Cu2S and O2.How many moles of Cu2O can be produced if 1.00 mole of Cu2S reacts? Answer 1 Question 1How many moles of Cu2O can be produced if 1.00 mole of O2 reacts? Answer 2 Question 1The amount of Cu2O that can be produced is smaller from 1.00 mole of Answer 3 Question 1 than the other reagent. Therefore, Answer 4 Question 1 is the limiting reagent and Answer 5 Question 1 is the reagent in excess when 1.00 mole of each is available.  Consider instead that you have 1.00 g each of Cu2S (molar mass of Cu2S is 159 g mol−1) and O2 (molar mass of O2 is 32.0 g mol−1).1.00 g of Cu2S is Answer 6 Question 1 moles of Cu2S and would produce Answer 7 Question 1 moles of Cu2O if all the Cu2S reacts. 1.00 g of O2 is Answer 8 Question 1 moles of O2 and would produce Answer 9 Question 1 moles of Cu2O if all the O2 reacts.The amount of Cu2O that can be produced is smaller from 1.00 g of Answer 10 Question 1 than the other reagent. Therefore, Answer 11 Question 1 is the limiting reagent and Answer 12 Question 1 is the reagent in excess when 1.00 g of each is available.

What is the first step in writing a balanced chemical equation?Multiple choice question.Classify the chemical reaction.Write the chemical equation without coefficients.Determine the mass of each substance involved.Add coefficients to the reactant side until the number of molecules on each side is equal.