The chemical reaction of CaCO3 → CO2 + CaO shows that 1 mole of calcium carbonate (CaCO3) produces 1 mole of carbon dioxide (CO2) and 1 mole of calcium oxide (CaO). The molar mass of CaCO3 is 100 g/mol. Therefore, for 30 grams of CaCO3, we have:
(30 g CaCO3) / (100 g/mol) = 0.3 moles of CaCO3
As the reaction stoichiometry is 1:1:1, we have 0.3 moles of CO2 and 0.3 moles of CaO as the products.
The molar mass of CO2 is 44 g/mol.
(0.3 moles CO2) * (44 g/mol) = 13.2 grams of CO2
The molar mass of CaO is 56 g/mol.
(0.3 moles CaO) * (56 g/mol) = 16.8 grams of CaO
Therefore, the total mass of the products is:
13.2 grams CO2 + 16.8 grams CaO = 30 grams.
Use the chemical reaction to answer the question.CaCO3→CO2+CaO A scientist heats 30 grams of calcium carbonate ( CaCO3 ) in the chemical reaction shown. What is the total mass of the products?(1 point)Responses15 grams15 grams10 grams10 grams60 grams 60 grams 30 grams
5 answers
Use the chemical reaction to answer the question.4Fe+3O2→2Fe2O3What happens to atoms of Fe and O2 during the reaction?(1 point)ResponsesThey gain mass.They gain mass.They are rearranged.They are rearranged.They are lost.They are lost.They maintain their properties.
During the reaction, the atoms of Fe and O2 are rearranged.
Chemical Reactions Quick Check4 of 54 of 5 ItemsQuestionUse the chemical reaction to answer the question.NaHCO3+HC2H3O2→NaC2H3O2+H2O+CO2A student mixes baking soda (NaHCO3) and acetic acid (HC2H3O2) to produce a chemical reaction shown. Which statement about the reaction is correct?(1 point)ResponsesSome atoms gain mass after the reaction.Some atoms gain mass after the reaction.The atoms of the reactants are regrouped during the reaction.The atoms of the reactants are regrouped during the reaction.There are more H atoms after the reaction.There are more H atoms after the reaction.Atoms of Na are destroyed during the reaction.
The correct statement about the reaction is: The atoms of the reactants are regrouped during the reaction.
62 answers