Answer:
Two-electron.
Explanation:
Hello!
In this case, since the half-reaction by which chlorine is reduced to aqueous chloride ion is:
[tex]Cl^0_2\rightarrow 2Cl^-[/tex]
We can see each chlorine undergo a decrease of electrons by 1, it means that, since there are two chlorine atoms undergoing an electron decrease, we write:
[tex]Cl^0_2+2e^-\rightarrow 2Cl^-[/tex]
Which means this is a two-electron process.
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Which statement about Fe is supported by the modern atomic theory but not John Dalton’s theory?
A. The element iron is composed of small particles called atoms.
B. The electrons of iron have probable locations in a region of space around the nucleus.
C. Iron atoms combine with other atoms in whole number ratios to form compounds.
D. Chemical reactions that involve iron do not create new atoms of iron.
Answer:
The correct option is B
Explanation:
One of the claims of John Dalton's atomic theory is that atom is the smallest unit of matter (which suggests that there are no particles smaller than an atom in any matter). This claim has been disproved by the modern atomic theory which established that there are particles smaller than atom (called subatomic particles). These particles are electrons, protons and neutrons.
One of the modern atomic theory was by Neils Bohr, who proposed that electrons move in circular orbits around the central nucleus. Thus, the electrons of iron can also be said to be present in a region of space (circular path) around the nucleus. This proves that option B is the correct option as John Dalton's theory did not even recognize the electron(s) nor the nucleus.
Answer:
b
Explanation:
Why did the hot water rise? Use faster, molecules, energy, density in your answer.
Answer:
Convection
Explanation:
Hot water will rise due to heat transfer by convection occurring in the heating system.
When a fluid is heated, the molecules will gain thermal energy. As the thermal energy of the liquid increases, the molecules will have heat which is average kinetic energy in the system. This causes them to be less denser and they rise in the cooking medium. As they rise, the colder part of the water sinks down to replace them in the pot. This exchange sets up convection cells in the heating medium.A student drew a diagram of the quantum model of an atom, as shown.
A small circle is shown. Six light gray spheres and six dark gray spheres are shown inside the circle. On the outer side of the circle is another circle of larger radius. This circle has two small circle on its boundary. Another circle of even greater radius is on the outside of the second circle. This outermost circle has four small circles on its boundary.
Which of the following explains if the student's diagram is correct or incorrect?
A - The diagram is incorrect because electrons follow an elliptical path instead of a circular path.
B - The diagram is incorrect because the exact location of the electrons cannot be determined.
C - The diagram is correct because protons and neutrons are concentrated at the center of the atom.
D - The diagram is correct because electrons are present in distinct energy levels around the nucleus.
The diagram is correct because electrons are present in distinct energy levels around the nucleus. Option D
What is the quantum model?Let nus just take a minute to be able to remind ourselves that when we look at the atom that there are several subatomic particles that can be shown to be able to make up the atom. We know that the electron is the particle that can be shown to be arranged in shells.
What we saw in the inner or the core of the atom is the nucleus and the six grey spheres that we can see there would have to do with the nucleus of the atom that is in the question.
As we now look up at the shells, we can see the electrons as they have been arranged into the respective shells were they can be found in the atom on the basis of the energy that they possess.
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sodium chloride is made from sodium and chloride. would you expect the properties of sodium chloride to be simliar to sodium or cloride
Answer:
No
Its a chemical change so the characteristics or chemical properties always differs thereby the properties of sodium chloride isn't similar to sodium or chloride
Choose the formula for ammonium.
ΝΗ,
b NH3
C
(NH)3N
Answer:
NH4+ will be ammonium, NH3 is ammonia which is the conjugate base of ammonium.
Explanation:
Which number completes the balanced chemical equation showing the process of rusting?
4Fe + 3O2 ---> ____Fe2O3
A. 1
B. 2
C. 4
D. 12
Answer:
B. 2
Explanation:
HAPPYYYY TURKEY BREAK
Answer:
2
Explanation:
Why do you think elements have these repeating patterns and groups of similar elements ? Explain your reasoning as much as you can.
Answer:
The elements in the periodic table are arranged in order of increasing atomic number. All of these elements display several other trends and we can use the periodic law and table formation to predict their chemical, physical, and atomic properties. Understanding these trends is done by analyzing the elements electron configuration; all elements prefer an octet formation and will gain or lose electrons to form that stable configuration.
Please give me brilliant answer
Why series fatty acid carbons seen in double from?
Please don’t answer if you just want points
What is the empirical formula of the substance C6H14010?*
Answer:
[tex]\mathrm {CH_24}[/tex]
Explanation:
To determine the molecular formula, enter the appropriate value for the molecular mass. We get [tex]CH_{2}4[/tex] as our answer to the question.
What is the reason for the trend in Atomic Radii? Select all that apply.
A. number of valence electrons.
B. number of neutrons in the nucleus
C. number of protons in the nucleus
D. larger atomic mass number
E. number of energy levels around the nucleus
The 38 elements in groups 3 through 12 of the periodic table are called "Alkaline Earth Metals" O True O False
Answer:
FALSE
they're called transition metals
Answer:
false
Explanation:
The 38 elements in groups 3 through 12 of the periodic table are called "transition metals." As with all metals, the transition elements are both ductile and malleable, and conduct electricity and heat.
What is the reason for the trend in Electron Affinity? Select all that apply.
A. number of protons in the nucleus
B. number of energy levels around the nucleus C. number of neutrons in the nucleus
D. larger atomic mass number
E. number of valence electrons.
Answer:
i think it a and d
Explanation:
Similar cells with the same function, all working together for the same purpose, form the 2nd level of organization in an organism. This level is called a(n)
Answer:
tissue
Explanation:
cell→tissue→organ→systems→organism
Which one is being shown in this picture?
Answer:
B. REFRACTION.
Is shown in fig.
How many grams of copper (II) nitrate would be produced from 0.80 g of copper metal reacting with excess nitric acid?
Answer:
[tex]m_{Cu(NO_3)_2}=2.36 gCu(NO_3)_2[/tex]
Explanation:
Hello!
In this case, since the chemical reaction between copper and nitric acid is:
[tex]2HNO_3+Cu\rightarrow Cu(NO_3)_2+H_2[/tex]
By starting with 0.80 g of copper metal (molar mass = 63.54 g/mol) and considering the 1:1 mole ratio between copper and copper (II) nitrate (molar mass = 187.56 g/mol) we can compute that mass via stoichiometry as shown below:
[tex]m_{Cu(NO_3)_2}=0.80gCu*\frac{1molCu}{63.54gCu} *\frac{1molCu(NO_3)_2}{1molCu} *\frac{187.56gCu(NO_3)_2}{1molCu(NO_3)_2} \\\\m_{Cu(NO_3)_2}=2.36 gCu(NO_3)_2[/tex]
However, the real reaction between copper and nitric acid releases nitrogen oxide, yet it does not modify the calculations since the 1:1 mole ratio is still there:
[tex]4HNO_3+Cu\rightarrow Cu(NO_3)_2+2H_2O+2NO_2[/tex]
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Amount of copper (II) nitrate would be produced is 2.25 gram
Molecular mass:Given that;
Amount of copper metal = 0.80 g
Find:
Amount of copper (II) nitrate would be produced
Computation:
Cu + 4HNO₃ → Cu(NO₃) + 2NO₂ + 2H₂O
Number of moles = Given mass / Molecular mass
Number of moles = 0.80 / 63.5
Number of moles = 0.012 mol
So,
n = Given mass / Molecular mass
0.012 = Given mass / 63.5 + (63.5 + 48)
Given mass = 2.25 gram
Amount of copper (II) nitrate would be produced = 2.25 gram
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