Question

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

Answer 1

[AI-generated answer — Bot GPT 3.5]

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.

Answer 2

Use the chemical reaction to answer the question.4​Fe+3O2→2Fe2O3​What 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.

Answer 3

[AI-generated answer — Bot GPT 3.5]

During the reaction, the atoms of Fe and O2 are rearranged.

Answer 4

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.

Answer 5

[AI-generated answer — Bot GPT 3.5]

The correct statement about the reaction is: The atoms of the reactants are regrouped during the reaction.

Answer 6

[AI-generated answer — Explain Bot]

To determine the total mass of the products in the given chemical reaction, we first need to understand the stoichiometry of the reaction.

The balanced equation for the reaction is:

CaCO3 → CO2 + CaO

According to the equation, one mole of calcium carbonate (CaCO3) will produce one mole of carbon dioxide (CO2) and one mole of calcium oxide (CaO).

The molar mass of calcium carbonate (CaCO3) is:
Ca: 40.08 g/mol
C: 12.01 g/mol
O: 16.00 g/mol

Adding these up, we get:
40.08 g/mol + 12.01 g/mol + (3 × 16.00 g/mol) = 100.09 g/mol

Therefore, 1 mole of calcium carbonate (CaCO3) has a mass of 100.09 grams.

Now, we can calculate the molar masses of carbon dioxide (CO2) and calcium oxide (CaO):
CO2: 12.01 g/mol + (2 × 16.00 g/mol) = 44.01 g/mol
CaO: 40.08 g/mol + 16.00 g/mol = 56.08 g/mol

Since we're given 30 grams of calcium carbonate (CaCO3), we can calculate the number of moles of CaCO3:
30 grams / 100.09 g/mol = 0.2999 moles (approximately 0.3 moles)

Using the stoichiometry of the reaction, we know that for every mole of CaCO3, we obtain one mole of CO2 and one mole of CaO.

Therefore, the total moles of products would also be 0.3 moles of CO2 and 0.3 moles of CaO.

Now, we can calculate the masses of the products:
Mass of CO2 = 0.3 moles × 44.01 g/mol = 13.20 grams
Mass of CaO = 0.3 moles × 56.08 g/mol = 16.82 grams

Adding up the masses of the products:
Mass of products = Mass of CO2 + Mass of CaO = 13.20 grams + 16.82 grams = 30.02 grams

Therefore, the total mass of the products is approximately 30.02 grams.