How many equivalents of Mg would have to react in order to liberate `4 N_(A)` electrons ? `(Mg-2e^(-)rarrMg^(2+))`

How many equivalents of Mg would have to react in order to liberate `4 N_(A)` electrons ? `(Mg-2e^(-)rarrMg^(2+))`
by

1 Answer

Answer :

How many equivalents of Mg would have to react in order to liberate `4 N_(A)` electrons ? `(Mg-2e^(-)rarrMg^(2+))`
by
selected by

Related questions

Which of the following compounds does not liberate `N_(2)` on treatement with `HNO_(2)`?

Description : Which of the following compounds does not liberate `N_(2)` on treatement with `HNO_(2)`?

Last Answer : Which of the following compounds does not liberate `N_(2)` on treatement with `HNO_(2)`? A. `H_(3)C- ... `H_(3)C-underset(H)underset(|)(N)-CO_(3)`

________ does not react with dilute hydrochloric acid but reacts with sulphuric acid and does not liberate hydrogen gas. a) iron b)copper c)gold d)zinc

Description : ________ does not react with dilute hydrochloric acid but reacts with sulphuric acid and does not liberate hydrogen gas. a) iron b)copper c)gold d)zinc

Last Answer : b)copper

An ion is reduced to the element when it absords `6xx10^(20)` electrons. The number of equivalents of the ion is:

Description : An ion is reduced to the element when it absords `6xx10^(20)` electrons. The number of equivalents of the ion is:

Last Answer : An ion is reduced to the element when it absords `6xx10^(20)` electrons. The number of equivalents of the ion is: A. 0.1 B. 0.01 C. 0.001 D. 0.0001

Assertion:- `N_(2)^(+)` is more stable than `N_(2)^(-)` Reason:- `N_(2)^(+)` has less electrons in antibonding orbital .

Description : Assertion:- `N_(2)^(+)` is more stable than `N_(2)^(-)` Reason:- `N_(2)^(+)` has less electrons in antibonding orbital .

Last Answer : Assertion:- `N_(2)^(+)` is more stable than `N_(2)^(-)` Reason:- `N_(2)^(+)` has ... the Reason is False. D. If both Assertion & Reason are false

Arrange `CFC, CH_(4), N_(2)O, and CO_(2)` in decreasing order according to their contribution in greenhouse effect:

Description : Arrange `CFC, CH_(4), N_(2)O, and CO_(2)` in decreasing order according to their contribution in greenhouse effect:

Last Answer : Arrange `CFC, CH_(4), N_(2)O, and CO_(2)` in decreasing order according to their contribution in greenhouse ... (2)` D. `CO_(2)gtCH_(4)gtCFCgtN_(2)O`

What can I do with my Apple 2e?

Description : What can I do with my Apple 2e?

Last Answer : I can’t think of any real world things to do with it. But if you want to just get rid of it I will pay for shipping and a pizza if you mail it to me. I collect old Apple computers.

Two half-reactions of an electrochemical cell are given below : MnO–4 (aq) + 8H+ (aq) + 5e– → Mn2+ (aq) + 4H2O (I), E° = 1.51 V Sn2+ (aq) → Sn4+ (aq) + 2e–, E° = + 0.15 V. Construct the redox equation from the standard potential of the cell and predict if the reaction is reactant favoured or product favoured. -Chemistry

Description : Two half-reactions of an electrochemical cell are given below : MnO-4 (aq) + 8H+ (aq) + 5e- → Mn2+ (aq) + 4H2O (I), E° = 1.51 V Sn2+ (aq) → Sn4+ (aq) + 2e- ... the redox equation from the standard potential of the cell and predict if the reaction is reactant favoured or product favoured. -Chemistry

Last Answer : The reactions can be represented at anode and at cathode in the following ways : At anode (oxidation) : Sn2+ → = Sn4+ (aq) + 2e- ] 5 E° = + 0.15 V At cathode (reduction) : MnO-4(aq) + 8H+ ... = E°cathode - E°anode = 1.51 - 0.15 = + 1.36 V ∴ Positive value of E°cell favours formation of product.

Two half-reactions of an electrochemical cell are given below : MnO–4 (aq) + 8H+ (aq) + 5e– → Mn2+ (aq) + 4H2O (I), E° = 1.51 V Sn2+ (aq) → Sn4+ (aq) + 2e–, E° = + 0.15 V. Construct the redox reaction equation from the two half-reactions and calculate the cell potential from the standard potentials and predict if the reaction is reactant or product favoured. -Chemistry

Description : Two half-reactions of an electrochemical cell are given below : MnO-4 (aq) + 8H+ (aq) + 5e- → Mn2+ (aq) + 4H2O (I), E° = 1.51 V Sn2+ (aq) → Sn4+ (aq) + ... -reactions and calculate the cell potential from the standard potentials and predict if the reaction is reactant or product favoured. -Chemistry

Last Answer : The reactions can be represented at anode and at cathode in the following ways : At anode (oxidation) : Sn2+ → Sn4+ (aq) + 2e- ] 5 E° = + 0.15 V Af cathode (reduction) : MnO-4(aq) + 8H+ ( ... = E°cathode - E°anode = 1.51 - 0.15 = + 1.36 V ∴ Positive value of E°cell favours formation of product.

`int1/(1+3e^x+2e^(2x))dx`

Description : `int1/(1+3e^x+2e^(2x))dx`

Last Answer : `int1/(1+3e^x+2e^(2x))dx`

An aqueous solution containing `1 M NiSO_(4) & 1 M S_(2) O_(8)^(2-)` is electrolysed using palladium electrode, at `25^(@)C` `{:(Ni^(+2)+2e^(-) rarrNi

Description : An aqueous solution containing `1 M NiSO_(4) & 1 M S_(2) O_(8)^(2-)` is electrolysed using palladium electrode, at `25^(@)C` `{:(Ni^(+2)+2e^(-) rarrNi

Last Answer : An aqueous solution containing `1 M NiSO_(4) & 1 M S_(2) O_(8)^(2-)` is electrolysed using palladium electrode, ... is `2H^(+) + 2e^(-) rarr H_(2)`

Assertion :- `Zn(s)+Cu^(+2)(aq)rarr Zn^(+2)(aq)+Cu(s)` can be spilt into following half reactions `{:(Zn(s)rarrZn^(+2)+2e^(-),),(,"(Oxidation half rea

Description : Assertion :- `Zn(s)+Cu^(+2)(aq)rarr Zn^(+2)(aq)+Cu(s)` can be spilt into following half reactions `{:(Zn(s)rarrZn^(+2)+2e^(-),),(,"(Oxidation half rea

Last Answer : Assertion :- `Zn(s)+Cu^(+2)(aq)rarr Zn^(+2)(aq)+Cu(s)` can be spilt into following half ... Reason is False. D. If both Assertion & Reason are False.

Which of the following combination of axial & equitorial bonds show Cis or Trans orientation in Dimethyl cyclohexane. (i) 1e, 2e (ii) 1e, 3e (iii) 1e,

Description : Which of the following combination of axial & equitorial bonds show Cis or Trans orientation in Dimethyl cyclohexane. (i) 1e, 2e (ii) 1e, 3e (iii) 1e,

Last Answer : Which of the following combination of axial & equitorial bonds show Cis or Trans orientation in Dimethyl cyclohexane. ... 3a (vi) 1e, 4a (vii) 1a, 3a

What is 2e-?

Description : What is 2e-?

Last Answer : The meaning is two electrons.

Maximum total strain energy is equal to (a) (σ1 2 +σ2 2 )/2E (b) ( σ1 2 +σ2 2 + 2μ σ1 σ2)/2E (c) ( σ1 2 +σ2 2 — 2μ σ1 σ2)/2E (d) None

Description : Maximum total strain energy is equal to (a) (σ1 2 +σ2 2 )/2E (b) ( σ1 2 +σ2 2 + 2μ σ1 σ2)/2E (c) ( σ1 2 +σ2 2 — 2μ σ1 σ2)/2E (d) None

Last Answer : (c) ( σ1 2 +σ2 2 — 2μ σ1 σ2)/2E

The total strain energy for a unit cube subjected to three principal stresses is given by? a) U= [(σέ) 1 + (σέ) 2+ (σέ) 3]/3 b) U= [(σ12+σ22+σ32)/2E] – (σ1σ2+σ2σ3+σ3σ1)2μ c) U= [(σέ) 1 + (σέ) 2+ (σέ) 3]/4 d) None of the mentioned

Description : The total strain energy for a unit cube subjected to three principal stresses is given by? a) U= [(σέ) 1 + (σέ) 2+ (σέ) 3]/3 b) U= [(σ12+σ22+σ32)/2E] – (σ1σ2+σ2σ3+σ3σ1)2μ c) U= [(σέ) 1 + (σέ) 2+ (σέ) 3]/4 d) None of the mentioned

Last Answer : b) U= [(σ12+σ22+σ32)/2E] – (σ1σ2+σ2σ3+σ3σ1)2μ

Resilience under principal tensile stresses σ1 and σ2 is (a) (1/2E)( σ1 2 + σ2 2 –μ σ1 σ2) (b) (1/2E)( σ1 2 + σ2 2 –4μ σ1 σ2) (c) (1/2E)( σ1 2 + σ2 2 –2μ σ1 σ2) (d) None

Description : Resilience under principal tensile stresses σ1 and σ2 is (a) (1/2E)( σ1 2 + σ2 2 –μ σ1 σ2) (b) (1/2E)( σ1 2 + σ2 2 –4μ σ1 σ2) (c) (1/2E)( σ1 2 + σ2 2 –2μ σ1 σ2) (d) None

Last Answer : (c) (1/2E)( σ1 2 + σ2 2 –2μ σ1 σ2)

Resilience under principal tensile stresses σ1 and σ2 is (a) (1/2E)( σ1 2 + σ2 2 –3μ σ1 σ2) (b) (1/2E)( σ1 2 + σ2 2 –4μ σ1 σ2) (c) (1/2E)( σ1 2 + σ2 2 –5μ σ1 σ2) (d) None

Description : Resilience under principal tensile stresses σ1 and σ2 is (a) (1/2E)( σ1 2 + σ2 2 –3μ σ1 σ2) (b) (1/2E)( σ1 2 + σ2 2 –4μ σ1 σ2) (c) (1/2E)( σ1 2 + σ2 2 –5μ σ1 σ2) (d) None

Last Answer : (d) None

Resilience under principal tensile stresses σ1 and σ2 is (a) (1/2E)( σ1 2 + σ2 2 –3μ σ1 σ2) (b) (1/2E)( σ1 2 + σ2 2 –4μ σ1 σ2) (c) (1/2E)( σ1 2 + σ2 2 –5μ σ1 σ2) (d) None

Description : Resilience under principal tensile stresses σ1 and σ2 is (a) (1/2E)( σ1 2 + σ2 2 –3μ σ1 σ2) (b) (1/2E)( σ1 2 + σ2 2 –4μ σ1 σ2) (c) (1/2E)( σ1 2 + σ2 2 –5μ σ1 σ2) (d) None

Last Answer : (d) None

The deflection due to couple M at the free end of a cantilever length L is (A) ML/EI (B) 2ML/EI (C) ML²/2E(D) M²L/2EI

Description : The deflection due to couple M at the free end of a cantilever length L is  (A) ML/EI (B) 2ML/EI (C) ML²/2E (D) M²L/2EI

Last Answer : (C) ML²/2EI

The pressure’of a gas in terms of its mean kinetic energy per unit volume E is equal to  (a) E/3  (b) E/2  (c) 3E/4  (d)2E/3  (e) 5E/4.

Description : The pressure’of a gas in terms of its mean kinetic energy per unit volume E is equal to  (a) E/3  (b) E/2  (c) 3E/4  (d)2E/3  (e) 5E/4.

Last Answer : Answer : d

The binary equivalent of hexadecimal 2E is ________. 22) A) 110001110 B) 00110111 C) 00101110 D) 00100111

Description : The binary equivalent of hexadecimal 2E is ________. 22) A) 110001110 B) 00110111 C) 00101110 D) 00100111

Last Answer : C) 00101110

Elongation of a bar of uniform cross section of length ‘L’, due to its own weight ‘W’ is given by a. 2WL/E b. WL/E c. WL/2E d. WL/3E Where, E=Young’s modulus of elasticity of material

Description : Elongation of a bar of uniform cross section of length ‘L’, due to its own weight ‘W’ is given by a. 2WL/E b. WL/E c. WL/2E d. WL/3E Where, E=Young’s modulus of elasticity of material

Last Answer : c. WL/2E

From where was INSAT-2E launched? (1) Baikanour (2) Kourou (3) Sriharikota (4) Chandipur

Description : From where was INSAT-2E launched? (1) Baikanour (2) Kourou (3) Sriharikota (4) Chandipur

Last Answer : Kourou

From where was India’s multipurpose telecommunication satellite INSAT-2E launched ? (1) Baikanour(2) Thumba (3) Sriharikota(4) Kourou

Description : From where was India’s multipurpose telecommunication satellite INSAT-2E launched ? (1) Baikanour(2) Thumba (3) Sriharikota(4) Kourou

Last Answer : Kourou

What are observation when Mg react with O2?

Description : What are observation when Mg react with O2?

Last Answer : The chemical reaction is:2 Mg + O2 = 2 MgO

If America was invaded or infiltrated by an overwhelmingly superior foreign power, militarily speaking, would Americans resort to terrorism in a bid to liberate their homeland?

Description : If America was invaded or infiltrated by an overwhelmingly superior foreign power, militarily speaking, would Americans resort to terrorism in a bid to liberate their homeland?

Last Answer : The Americans practiced Guerilla warfare to get rid to the British..so I would say yes..

What is liberalisation? What steps were taken by the government to liberate the Indian economy? -SST 10th

Description : What is liberalisation? What steps were taken by the government to liberate the Indian economy? -SST 10th

Last Answer : Removing barriers or restrictions set by the government is known as liberalisation: (i) The Indian government, after Independence, had put barriers to foreign trade and foreign investment. This was ... trade, businesses are allowed to make decisions freely about what they wish to import or export.

Choose the reactions which would liberate nitrogen gas?

Description : Choose the reactions which would liberate nitrogen gas?

Last Answer : Choose the reactions which would liberate nitrogen gas? A. `Ca(OCl)Cl+NH_(3)underset("medium")overset(" ... . `NH_(4)Cl+NaNO_(2)overset(Delta)rarr?`

How many of the following liberate `O_(2)` on heating in a dry test tube ? `CaO, Fe_(2)O_(3), Fe_(3)O_(4), FeO, Cr_(2)O_(3), XeF_(4), Al_(2)O_(3), MgO

Description : How many of the following liberate `O_(2)` on heating in a dry test tube ? `CaO, Fe_(2)O_(3), Fe_(3)O_(4), FeO, Cr_(2)O_(3), XeF_(4), Al_(2)O_(3), MgO

Last Answer : How many of the following liberate `O_(2)` on heating in a dry test tube ? `CaO, Fe_(2)O_(3), Fe_(3)O_(4), ... 3), XeF_(4), Al_(2)O_(3), MgO, Na_(2)O`

Which of the following reacts with NaOH to liberate a gas ?

Description : Which of the following reacts with NaOH to liberate a gas ?

Last Answer : Which of the following reacts with NaOH to liberate a gas ? A. `P_(4)` (white phosphorus) B. `S_(8)` (rhombic sulphur) C. `Cl_(2)` D. C (graphite)

Which of them liberate a gas which turns lime water milky .

Description : Which of them liberate a gas which turns lime water milky .

Last Answer : Which of them liberate a gas which turns lime water milky . A. B. `{:(CH_(3)-CH-COOH),(" |"),(" "COOH ... ))_(5)-COOH overset(Ca(OH)_(2)//Delta)to` D.

Which of the following reaction does not liberate oxygen ?

Description : Which of the following reaction does not liberate oxygen ?

Last Answer : Which of the following reaction does not liberate oxygen ? A. `O_(3) + KI + H_(2)O rarr` B. `H_(2)O_(2) + ... `KO_(2) (s) + CO_(2) (g) rarr` D. None

Which of them liberate a gas which turns lime water milky .

Description : Which of them liberate a gas which turns lime water milky .

Last Answer : Which of them liberate a gas which turns lime water milky . A. B. `{:(CH_(3)-CH-COOH),(" |"),(" "COOH ... ))_(5)-COOH overset(Ca(OH)_(2)//Delta)to` D.

Which of the following reaction does not liberate oxygen ?

Description : Which of the following reaction does not liberate oxygen ?

Last Answer : Which of the following reaction does not liberate oxygen ? A. `O_(3) + KI + H_(2)O rarr` B. `H_(2)O_(2) + ... `KO_(2) (s) + CO_(2) (g) rarr` D. None

One mole of acidified `K_(2)Cr_(2)O_(7)` on reaction with excess of KCl will liberate….., moles of `I_(2)`.

Description : One mole of acidified `K_(2)Cr_(2)O_(7)` on reaction with excess of KCl will liberate….., moles of `I_(2)`.

Last Answer : One mole of acidified `K_(2)Cr_(2)O_(7)` on reaction with excess of KCl will liberate….., moles of `I_(2)`. A. 6 B. 1 C. 7 D. 3

How many compounds liberate `NH_(3)` on heating from the following ? (i) `(NH_(4))_(2)SO_(4) " " (ii) (NH_(4))_(2)CO_(3) " " (iii) NH_(4)Cl` (iv) `NH_

Description : How many compounds liberate `NH_(3)` on heating from the following ? (i) `(NH_(4))_(2)SO_(4) " " (ii) (NH_(4))_(2)CO_(3) " " (iii) NH_(4)Cl` (iv) `NH_

Last Answer : How many compounds liberate `NH_(3)` on heating from the following ? (i) `(NH_(4))_(2)SO_(4) " " (ii) (NH_(4)) ... 3) " " (v) (NH_(4))_(2)Cr_(2)O_(7)`

Which of the following metal carbonates liberate. `CO_(2)(g)` on heating :

Description : Which of the following metal carbonates liberate. `CO_(2)(g)` on heating :

Last Answer : Which of the following metal carbonates liberate. `CO_(2)(g)` on heating : A. `Na_(2)CO_(3)` B. `K_(2)CO_(3)` C. `Rb_(2)CO_(3)` D. `Ag_(2)CO_(3)`

Which anion does not liberate any gas with dilute as well as conc. `H_(2)SO_(4)`.

Description : Which anion does not liberate any gas with dilute as well as conc. `H_(2)SO_(4)`.

Last Answer : Which anion does not liberate any gas with dilute as well as conc. `H_(2)SO_(4)`. A. `NO_(2)^(-)` B. `NO_(3)^(-)` C. `SO_(3)^(2-)` D. `SO_(4)^(2-)`

A crystalline solid X reacts with dilute HCl to liberate a gas Y. The gas Y decolourises acidified `KMnO_(4)`. When a gas Z is slowly passed into aque

Description : A crystalline solid X reacts with dilute HCl to liberate a gas Y. The gas Y decolourises acidified `KMnO_(4)`. When a gas Z is slowly passed into aque

Last Answer : A crystalline solid X reacts with dilute HCl to liberate a gas Y. The gas Y decolourises acidified `KMnO_(4)`. When ... 2)S` D. `Na_(2)SO_(4),SO_(2)`

If 96500 coulomb of electricity is passed through CuSo4 solution it will liberate?

Description : If 96500 coulomb of electricity is passed through CuSo4 solution it will liberate?

Last Answer : Need answer

Who published the New York world newspaper story that called for war to liberate cuba?

Description : Who published the New York world newspaper story that called for war to liberate cuba?

Last Answer : William Randolph Hearst

Considering the chemical equation of the aerobic cellular respiration which molecules does the cell need and which molecules does it liberate in the process?

Description : Considering the chemical equation of the aerobic cellular respiration which molecules does the cell need and which molecules does it liberate in the process?

Last Answer : Considering the chemical equation of the aerobic cellular respiration it is observed that glucose and molecular oxygen are needed as reagents and carbon dioxide and water are released. The process also spends ADP and phosphate that turn into ATP.

The acid which fails to liberate carbon dioxide from sodium bicarbonate is : (1) Acetic acid (2) Formic acid (3) Carbonic acid (4) Sulphuric acid

Description : The acid which fails to liberate carbon dioxide from sodium bicarbonate is : (1) Acetic acid (2) Formic acid (3) Carbonic acid (4) Sulphuric acid

Last Answer : (4) Sulphuric acid Explanation: Sodium bicarbonate and organic acid (Formic acid, Acetic acid, Carbonic acid, etc) react vigorously to liberate carbon dioxide. For example, Sodium bicarbonate (NaHCO3) when treated with acetic acid reacts vigorously to liberate carbon dioxide.

Which word from the following means the same as ̳freedom from restriction‘? (a) oppression (b) liberate (c) bondage (d) emancipation

Description : Which word from the following means the same as ̳freedom from restriction‘? (a) oppression (b) liberate (c) bondage (d) emancipation

Last Answer : (d) emancipation

In angiosperms, pollen tube liberate their male gametes into the (a) central cell (b) antipodal cells (c) egg cell (d) synergids.

Description : In angiosperms, pollen tube liberate their male gametes into the (a) central cell (b) antipodal cells (c) egg cell (d) synergids.

Last Answer : d) synergids.

Which of the following compounds on treatment with NaHCO3 will liberate CO2? (a) Acetic acid (b) Ethylamine (c) Acetone (d) Ethyl alcohol

Description : Which of the following compounds on treatment with NaHCO3 will liberate CO2? (a) Acetic acid (b) Ethylamine (c) Acetone (d) Ethyl alcohol

Last Answer : Acetic acid

The Nobel Laureate who is fighting to liberate the people of Myanmar is

Description : The Nobel Laureate who is fighting to liberate the people of Myanmar is

Last Answer : Aung San Suukyi

Allelochemicals liberate through volatiliza tion a). Terpinoid b). Alkaloids c). Tannins d). Lactones

Description : Allelochemicals liberate through volatiliza tion a). Terpinoid b). Alkaloids c). Tannins d). Lactones

Last Answer : a). Terpinoid

The acid which fails to liberate carbon dioxide from sodium bicarbonate is : (1) Acetic acid (2) Formic acid (3) Carbonic acid (4) Sulphuric acid

Description : The acid which fails to liberate carbon dioxide from sodium bicarbonate is : (1) Acetic acid (2) Formic acid (3) Carbonic acid (4) Sulphuric acid

Last Answer : Sulphuric acid

Assertion:- In MgO electrovalency of Mg is 2. Reason :- Mg shares two electrons with oxygen.

Description : Assertion:- In MgO electrovalency of Mg is 2. Reason :- Mg shares two electrons with oxygen.

Last Answer : Assertion:- In MgO electrovalency of Mg is 2. Reason :- Mg shares two electrons with oxygen. A. If ... False. D. If both Assertion & Reason are false