Given the balanced equation representing a reaction:
Ni(s) + 2HCl(aq) - NiCl(aq) + H2(9)
In this reaction, each Ni atom
1.
loses 1 electron
2.
loses 2 electrons
لما
gains 1 electron
4
gains 2 electrons
Submit

Answers

Answer 1

Answer: loses 2 electrons

Explanation:

Answer 2

Ni Atom loses 2 electrons , Option 2 is the correct answer.

What is an Electron ?

Electron is a subatomic particle (denoted by the symbol e⁻)

or  whose electric charge is negative one elementary charge.

Electrons belong to the first generation of the lepton particle family and are generally thought to be elementary particles because they have no known components or substructure.

The electron has a mass that is approximately 1/1836 that of the proton.

Ni(s) + 2HCl(aq) - NiCl(aq) + H₂(g)

This is an oxidation-reduction (redox) reaction:

2 H⁺ + 2 e⁻ → 2 H (reduction)

Ni - 2 e⁻ → Ni ²⁺ (oxidation)

HCl is an oxidizing agent, Ni is a reducing agent.

Therefore Ni Atom loses 2 electrons , Option 2 is the correct answer.

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Related Questions

What is the formation of gas is an example of?​

Answers

Answer:

The formation of a gas is a clue to chemical changes. The bubbles of gas that you observed form when an antacid is dropped into water is an example of change. ... As wood burns, it turns into a pile of ashes and gases that rise into air.

Explanation:

what do a bald eagle, a komodo dragon, and a lizard have in common

Answers

Answer:

All of them derive from a common ancestor. They each share something in their DNA that ties into their past selves, which were more closely related. As they evolved, they became more and more distant, but we can still trace them back to the olden days.

Also they all have scales.

Hope this was at least semi-useful.

What happens to sediments that get deposited in basins?

Answers

Sedimentary basins are regions of the Earth where long-term subsidence creates accommodation space for accumulation of sediments. As the sediments are buried, they are subject to increasing pressure and begin the processes of compaction and lithification that transform them into sedimentary rock.

Answer: Sedimentary basins are regions of the Earth where long-term subsidence creates accommodation space for accumulation of sediments. As the sediments are buried,

Explanation:Hopeits right i fount it on a site

What is the mass in grams of 9.02x10^28 atoms of Fe​

Answers

Answer:

83.674 grams of Fe

Explanation:

9.02 x 10²⁸ atoms

To convert from atoms to grams, we first need to convert atoms to moles. To do this, divide the atoms by Avogadro's Number, 6.02 x 10²³

9.02 x 10²⁸ ÷ 6.02 x 10²³

= 1.498 moles of Fe

Now we need to convert moles to grams. To do this, multiply the moles by the molar mass of Fe. The molar mass can be found on the periodic table.

1.498 • 55.845

= 83.674 grams of Fe

Hope this helps!

Please help me on this

Answers

Answer:

the answer is 3(decay) and

the second isa 1(alfa particle) has a mass of equal to helium nucleus

What does the reaction rate measure?
O A. The collisions per second
O B. The speed of the reaction
C. The reaction activation energy
O D. The moles per liter of product

Answers

b
hope that helps :)
brainlyest pls

Answer:

The speed of the reaction

Explanation:

I just took the test and got it right... i hope this helps u :)

Why do silver and copper have similar properties?
(7th Grade science)

Answers

Answer:

They are both listed under group 11 on the periodic table and both are highly conductive of electricity

Explanation:

HOPE THIS HELPS ^^

Also, both are metals which means both are very conductive, shiny, and mailable

Question 4
1 pts
24) Which statement best describes what happens to the particles in ice as it melts?
A) They lock into place.
B) They move more rapidly.
C) They lose some of their mars.
D) They become electrically charged.

Answers

the answer is B im sure

Round the following number to 3 significant figures:

15937

pls helpppp

Answers

Answer:

15900

Explanation:

I think hope this helps!! :D

Answer:

15900

Explanation:

Certain minerals exclude lead but not uranium from their crystal structure, so when the minerals form they have no lead, only uranium. As time goes on, the uranium decays to lead, so measuring the ratio of lead atoms to uranium atoms allows investigators to determine the ages of the minerals. If a sample of a mineral contains 3 atoms of 207Pb207Pb for every 1 atom of 235U235U, how many years ago was it formed

Answers

Answer:

The answer is "[tex]1.4 \ \bold{ billion-years}[/tex]".

Explanation:

Using formula:

[tex]\to N_{Now} = N_{orige}e^{\lambda t} \\\\[/tex]

[tex]\to[/tex] 1 U atom produces 1 Pb atom after decay.

[tex]\to[/tex] U's original numbers are now the sum of U counts and Pb counts.

 [tex]\to N_U=(N_U+N_{pb})e^{\lambda Ut}[/tex]

[tex]\to 1 = (1+3) \ exp[(\frac{-\ln(2)}{t_{(half)}} \times t ]\\\\\to t = [\frac{\ln(4)}{\ln(2)}] \times t_{(half)}[/tex]

      [tex]= 14 \times 10^8 \ \ years\\\\=1.4 \ billion \ \ years[/tex]

Why does photosynthesis require 6 molecules of carbon dioxide and 6 molecules of water to make 1 molecule of glucose

Answers

For each molecule of glucose produced: 6 water water molecules are oxidized, and come to be the supply of electrons for carbon dioxide reduction. 6 molecules of carbon dioxide are required, one for every carbon atom in glucose. 6 molecules of oxygen are produced as a with the aid of made from water oxidation.

how does a drought (lack of water) affect an ecosystem?

Answers

When a drought occurs, their food supply can shrink and their habitat can be damaged. Lack of food and drinking water for wild animals. Increase in disease in wild animals, because of reduced food and water supplies. Migration of wildlife.

Which of the elements shown will form ions, what will be the charges of those ions, and why will they have those charges?

Answers

Answer:

the sodium and chlorine are the form of ion

Explanation:

because sodium have tendency to loose electron it become positive ion and chlorine has tendency to gain electron it becomes negative ion

how many moles of ammonia could be obtained from a maximum of 5.0 moles of nitrogen​

Answers

Answer:

10 moles of ammonia could be obtained from a maximum of 5.0 moles of nitrogen​.

Explanation:

The balanced reaction is:

N₂ + 3 H₂ → 2 NH₃

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

N₂: 1 moleH₂: 3 molesNH₃: 2 moles

Then you can apply the following rule of three: if by reaction stoichiometry 1 mole of nitrogen produces 2 moles of ammonia, 5 moles of nitrogen produces how many moles of ammonia?

[tex]moles of ammonia=\frac{5 moles of nitrogen*2 moles of ammonia}{1 mole of nitrogen}[/tex]

moles of ammonia= 10

10 moles of ammonia could be obtained from a maximum of 5.0 moles of nitrogen​.

PLEASE Answer asap! What characteristics are shared by all alkali metals and alkaline earth metals?
A. They conduct electricity very well
B. They are strong and shiny
C. They form alkaline solutions when mixed with water
D. They do not react with water at all

Answers

Answer:

C

Explanation:

Mostly all of them but most likely C

How do you know if a material is an elernent or a compound?

Answers

Explanation:

Elements and compounds are both examples of pure substances. A substance that cannot be broken down into chemically simpler components is an element. ... A substance that can be broken down into chemically simpler components (because it has more than oneelement) is a compound.

7.(05.02 MC)
The speed of light in four different materials is shown below:
Material Speed of light in thousand miles per second
A
140
B
78
С
186
D
12
Which material is the most dense? (4 points)
Material A
Material B
Material C
Material D

Answers

Answer:

C

Explanation:

thats the answer!! HEHEHHEHHHHSJSKSSSSJS

Answer: B or A

Explanation: Everyone is saying C and i just took the test and it is not C

How many atoms of hydrogen are there in one molecule of water. if the chemical formula is H202 ?

a. 0

b. 1

c. 2

d. 3

Answers

The answer is , there are 2 atoms of hydrogen in one molecule of water


it is used to lift water from a well​

Answers

Answer:

When air is admitted into the well, the water recedes from the level of static head to the bottom of the discharge pipe. The displaced column of liquid rises up the discharge pipe. Air bubbles mix with water and this reduces the specific gravity of the column of water sufficiently to lift it to the surface.

Explanation:

What type of circuit has a broken path that does NOT let current flow through it?
A : Closed circuit
B: Open circut
C : Toggle
D : Switch

Answers

Answer:

B

Explanation:

A student performs an acid-base titration experiment to determine the amount of ascorbic acid in different brands of juice. Which solution should the student use as the base solution in this acid-base titration experiment?
A.) HCl
B.) NaOH
C.) LiBr
D.)CaCl2

Answers

Answer:

idn Mann nnnnnnnn . .....mmmmm mmmm aaaaaaa it's a

The answer is Option B, NaOH is the solution student should use as the base solution in this acid-base titration experiment to determine the amount of ascorbic acid in different brands of juice.

What is an Acid Base Titration ?

An acid–base titration is a method of quantitative analysis.

It is used for determining the concentration of an acid or base by neutralizing it with a standard solution of base or acid of known concentration.

An indicator is used to monitor the progress of the acid–base reaction.

Ascorbic acid, HC₆H₇O₆ is an acid. So can be titrated with a base , sodium hydroxide, NaOH using the indicator, phenolphthalein.

HC₆H₇O₆(aq) + NaOH(aq) → NaHC₆H₇O₆(aq) + H₂O(l)

Among the options , HCl is an acid , LiBr , CaCl₂ are salts , NaOH is the only base.

Phenolphthalein changes from colorless to pink (or red) when all of the acid gets neutralized.

Therefore NaOH is the solution student should use as the base solution in this acid-base titration experiment to determine the amount of ascorbic acid in different brands of juice.

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An organism that can make its own food may be classified into one of several kingdoms, depending on other characteristics. Based on this information, in which of the following kingdoms would this organism NOT be classified?
Archaea
Fungi
Plant
Protista

Help me!!!!!​

Answers

The would not be classified into archaea.

So, A.

please help

whats the skeleton equation

for this equation

copper sulfate + sodium hydroxide --> copper hydroxide

Answers

Answer:

Copper(II) sulphate – sodium hydroxide reaction

The reaction between copper(Il) sulphate and sodium hydroxide solutions is a good place to start. If you slowly add one to the other while stirring, you will get a precipitate of copper(II) hydroxide, Cu(OH)2.

The "fuel" in most combustion reactions
is a hydrocarbon. Using the examples in
Model 2, write a description for the
classification of substances known as
hydrocarbons.

Answers

Answer:

hydracarbons are substances consisting of carbon and hydrogen only

Explanation:

What is the density of an object that has a mass of 10 grams and a volume of 5 mL?

Answers

Answer:

2 g/mL

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\[/tex]

From the question we have

[tex]density = \frac{10}{5} = 2 \\ [/tex]

We have the final answer as

2 g/mL

Hope this helps you

The Universal Space Agency wants to know the results of your Sim investigation. Write your report to the lead chemist, explaining why there is liquid water on the outside of the can but no liquid nitrogen. Use evidence from your investigation in your explanation.

Answers

Answer:

Due to warm temperature.

Explanation:

There is water present in liquid form instead of liquid nitrogen on the outer side of the can because of the temperature present in the surrounding environment. The temperature around the can is little warm which is favourable for the water but not for the liquid nitrogen. The liquid nitrogen present in liquid state when the temperature of the surrounding is too cold. if it is warm, the liquid nitrogen starts boiling and converts into gaseous state so that's why the warmer temperature is responsible for the presence of water not the liquid nitrogen.

Please help me it's urgent!!!!!

Answers

thanks for the points bud

2 uniones iónicas y 2 covalentes, realizando las estructuras de Lewis correspondiente y averiguar la función del compuesto armado en la vida cotidiana.

Answers

Answer:

Cloruro de sodio y fluoruro de sodio.

Dióxido de carbono y monóxido de hidrógeno.

Explicación:

El cloruro de sodio y el fluoruro de sodio son los compuestos que tienen enlaces iónicos. Estos compuestos iónicos se utilizan para diferentes actividades de nuestra vida diaria. El cloruro de sodio se usa para cocinar y el fluoruro de sodio se usa en la pasta de dientes para limpiar nuestros dientes. El dióxido de carbono y el monóxido de hidrógeno son compuestos que tienen enlaces covalentes. El dióxido de carbono se usa en refrescos / refrescos y algunos otros líquidos que se pueden usar en la vida diaria. El monóxido de hidrógeno es el agua pura que bebemos todos los días en nuestra vida diaria y es muy importante para nuestra supervivencia.

How much heat is required to raise the temperature of 18 grams of liquid water by 25 C?

Answers

Since the molecular weight of water is about 18 g/mol, you have about 1 mol of water. So, now we know that it takes approximately 46.2 kJ of heat energy to warm 18.02g of water from 25C to 100C and then to vaporize it into steam. Hopefully this helped!

Explanation:

A gas has a volume of 5.00 L at 20 degrees Celsius. What is the volume of gas at 150 degrees Celsius.

Answers

Answer:

7.22 L

Explanation:

From the question,

Applying Charles law,

V₁/T₁ = V₂/T₂...................... Equation 1

Where V₁ = Initial volume of gas, V₂ = Final volume of gas, T₁ = Initial Temperature of gas in Kelvin, T₂ = Final Temperature of gas in Kelvin

Make V₂ the subject of the equation

V₂ = (V₁×T₂)/T₁................. Equation 2

Given: V₁ = 5.00 L, T₁ = 20 °C = (20+273) K = 293 K, T₂ = 150 °C = (150+273) K = 423 K

Substitute these value into equation 2

V₂ = (5.00×423)/293

V₂ = 7.22 L

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