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pickupchik [31]
4 years ago
14

Briefly discuss interpretations of your observations and results. Include in your discussion, any conclusions drawn from the res

ults and any sources of error in the experiment. Be sure to discuss the reasons for your measured value of the specific heat of the metal being too high or too low.
Chemistry
1 answer:
VMariaS [17]4 years ago
4 0

Answer:

In comparison to Part 1 of this experiment, we observed similar reactions when determining the make up of our unknown. When testing for Mn2+ we observed a color change that resulted in a darker brown/red color, when testing for Co2+ we observed the formation of foamy bubbles but we could not conclude that a gas had formed, when testing for Fe3+ the result was a liquid red in color, when testing for Cr3+ we observed no change, when testing for Zn2+ we observed the formation of a pink/red liquid, when testing for K+ we observed the formation of a precipitate, when testing for Ca2+ we observe the formation of a precipitate. Sources of error may have occurred when observing whether or not an actual reaction had taken place or not, using glassware that wasn't fully cleaned, or the accidental mix of various other liquids in the lab

Explanation:

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Copper oxide, CuO, reacts with hydrochloric acid, HCI, to produce copper chloride, CuCL2 and water
spayn [35]

Explanation:

El óxido de cobre (II), también llamado antiguamente óxido cúprico ({\displaystyle {\ce {CuO}}}{\displaystyle {\ce {CuO}}}), es el óxido de cobre con mayor número de oxidación. Como mineral se conoce como tenorita.

{\displaystyle {\ce {2Cu + O2 = 2CuO}}}{\displaystyle {\ce {2Cu + O2 = 2CuO}}}

Aquí, se forma junto con algo de óxido de cobre (I) como un producto lateral, por lo que es mejor prepararlo por calentamiento de nitrato de cobre (II), hidróxido de cobre (II) o carbonato de cobre (II):

{\displaystyle {\ce {2 Cu(NO3)2 = 2 CuO + 4 NO2+ O2}}}{\displaystyle {\ce {2 Cu(NO3)2 = 2 CuO + 4 NO2+ O2}}}

{\displaystyle {\ce {Cu(OH)2 (s) = CuO (s) + H2O (l)}}}{\displaystyle {\ce {Cu(OH)2 (s) = CuO (s) + H2O (l)}}}

{\displaystyle {\ce {CuCO3 = CuO + CO2}}}{\displaystyle {\ce {CuCO3 = CuO + CO2}}}

El óxido de cobre (II) es un óxido básico, así se disuelve en ácidos minerales tales como el ácido clorhídrico, el ácido sulfúrico o el ácido nítrico para dar las correspondientes sales de cobre (II):

{\displaystyle {\ce {CuO + 2 HNO3 = Cu(NO3)2 + H2O}}}{\displaystyle {\ce {CuO + 2 HNO3 = Cu(NO3)2 + H2O}}}

{\displaystyle {\ce {CuO + 2 HCl =CuCl2 + H2O}}}{\displaystyle {\ce {CuO + 2 HCl =CuCl2 + H2O}}}

{\displaystyle {\ce {CuO + H2SO4 = CuSO4 + H2O}}}{\displaystyle {\ce {CuO + H2SO4 = CuSO4 + H2O}}}

Reacciona con álcali concentrado para formar las correspondientes sales cuprato.

{\displaystyle {\ce {3 XOH + CuO + H2O = X3[Cu(OH)6]}}}{\displaystyle {\ce {3 XOH + CuO + H2O = X3[Cu(OH)6]}}}

Puede reducirse a cobre metálico usando hidrógeno o monóxido de carbono:

{\displaystyle {\ce {CuO + H2 = Cu + H2O}}}{\displaystyle {\ce {CuO + H2 = Cu + H2O}}}

{\displaystyle {\ce {CuO + CO = Cu + CO2}}}{\displaystyle {\ce {CuO + CO = Cu + CO2}}}

6 0
3 years ago
Becker did an experiment. Separately, Tracy did the exact same experiment. Becker and Tracy found they each got very different r
maxonik [38]

Answer:

I don't know

Explanation:

Maybe they shouldn't copy each other

5 0
3 years ago
Read 2 more answers
It is the balance between thermal energy and intermolecular forces that determines the state of matter of any substance at room
ExtremeBDS [4]

Answer:

The correct option is;

2) Thermal energy increases by a factor of R

Explanation:

The equipartition energy theorem states that when molecules are in a state of thermal equilibrium, particles within the system posses equal average energy with each degree of freedom which can be known as energy due to a state of having a particular temperature or thermal energy given by the relation

E_{th} = Kinetic energy of translation + Kinetic energy of rotation + Energy of vibration

For a mono-atomic gas, E_{th} = 3/2·n·R·T

For a diatomic gas, E_{th} = 5/2·n·R·T

For a solid element, E_{th} = 3·n·R·T

Therefore, as the temperature is doubled, the thermal energy increases by a factor of R.

5 0
3 years ago
Picture has the question
xenn [34]

Answer:I believe it is 5

Explanation:

8 0
4 years ago
Read 2 more answers
Which of these four atoms is the MOST chemically stable given the electron formation of each?
Allushta [10]

The most chemically stable of the four atoms given the <em>electron configuration</em> of each is; Choice A : He.

Helium (He) is a chemical element with the atomic number 2 on the periodic table. It's electron formation is 1s². It has zero valence electron in it's atomic shell.

Lithium (Li) is a chemical element with the atomic number 3 on the periodic table. It's electron formation is 1s² 2s¹. It has 1 valence electron in it's atomic shell.

Nitrogen (N) is a chemical element with the atomic number is 7 on the periodic table. It's electron formation is 1s² 2s² 2p³. It has 3 valence electron in it's atomic shell.

Sulphur (S) is a chemical element with the atomic number is 16 on the periodic table. It's electron formation is 1s² 2s² 2p⁶ 3s² 3p4. It has 4 valence electron in it's atomic shell.

Chemical stability is measured by the number of valence electron present in a chemical element atomic shell. Therefore Helium (He) has zero (0) valence electron in it's atomic shell making it the most stable amongst the chemical element listed above because elements with zero valence electron are unreactive and are the most stable elements on the periodic table.

Read more:

brainly.com/question/8590534?utm_source=android&utm_medium=share&utm_campaign=question

3 0
2 years ago
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