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wariber [46]
3 years ago
8

Which of the following is defined as the mass of an atom based on the mass of an atom of carbon-12?

Chemistry
2 answers:
iogann1982 [59]3 years ago
3 0
<span>This would be the atomic mass. In an atom of carbon-12, there are 6 protons and 6 neutrons at rest (electrons have a negligible mass and are usually not part of the overall mass calculation). All atomic masses are based off the measurements of this specific iteration of carbon.</span>
gizmo_the_mogwai [7]3 years ago
3 0

Answer:

atomic mass

Explanation:

done the topic

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What mass of Al contains the same number of atoms as 33.5g of Au
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Stoich questions...

1) convert the grams of Au to moles
(33.5g)/(196.7g/mol)=___x___

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x(moles of Au)*(6.02*10^23)=?

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11. What is another name for the transition metals? Group B elements noble gases Group A elements Group C elements
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Answer:

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3 0
3 years ago
The balanced equation for combustion in an acetylene torch is shown below:
vichka [17]

Answer:

70mol

Explanation:

The equation of the reaction is given as:

                  2C₂H₂ + 5O₂ → 4CO₂ + 2H₂O

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Unknown:

Number of moles of CO₂ produced = 35.0mol

Solution:

From the information given about the reaction, we know that the reactant that limits this combustion process is acetylene. Oxygen is given in excess and we don't know the number of moles of this gas that was used up. We know for sure that all the moles of acetylene provided was used to furnish the burning procedure.

To determine the number of moles of CO₂ produced, we use the stoichiometric relationship between the known acetylene and the CO₂ produced from the balanced chemical equation:

From the equation:

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          ∴ 35.0 mol of acetylene would produced:  

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6 0
3 years ago
Read 2 more answers
Iron iii chloride ammonium hydroxide balanced equation, complete ionic equation, net ionic equation
Vladimir [108]
Iron III Chloride has a chemical formula of FeCl₃, while ammonium hydroxide has a chemical formula of NH₄OH. 

The <em>balanced equation</em> would be:

FeCl₃ (aq) + 3 NH₄OH (aq) → Fe(OH)₃ (s) + 3 NH₄Cl (aq)
The precipitate is Fe(OH)₃ or iron iii hydroxide.

To find the <em>complete ionic equation</em>, dissociate the compounds in aqueous phases into their ionic forms:

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To find the <em>net ionic equation</em>, cancel out like ions that appear both in the reactant and product side:

Fe³⁺ +  3 OH⁻ -->  Fe(OH)₃


4 0
3 years ago
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