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2 years ago

Write a balanced half-reaction for the oxidation of aqueous hydrazine N2H4 to gaseous nitrogen N2 in basic aqueous solution

Chemistry

1 answer:

Zigmanuir [339]2 years ago

7 0

Answer:

N2H2(aq) + 2OH^-(aq) ----------> N2(g) + 2H2O(l) + 2e

Explanation:

Hydrazine is mostly used in thermal engineering as an anticorrosive agent. Hydrazine can be oxidized in aqueous solution as shown in the equation above. Oxidation has to do with loss of electrons and increase in oxidation number.

The oxidation number of nitrogen in the equation increased from -1 in hydrazine on the lefthand side of the reaction equation to zero in nitrogen on the right hand side of the reaction equation. Two electrons were lost in the process as shown.

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8. (02.04 MC)

elena55 [62]

Answer:

3p^2

Explanation:

after filling 3s^2 only two electrons left out of 14 so the next sub shell is 3p therefore ,X represents 3p^2

3 0

1 year ago

Draw the expanded structural formula for the condensed formula (CH3)2CHCH2OCH2CH3 . Draw all hydrogen atoms

prisoha [69]

We have that the Complete Expanded Structure of (CH3)2CHCH2OCH2CH3 is given in the attachment below

From the Question

(CH3)2CHCH2OCH2CH3

Generally for the condensed formula (CH3)2CHCH2OCH2CH3

We consider that this is a single bond connecting them

We consider

Hydrogen H(1)

Oxygen(8)

Carbon(6)

In conclusion

The Complete Expanded Structure of (CH3)2CHCH2OCH2CH3 is given in the attachment below.

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brainly.com/question/24102840

5 0

2 years ago

A 5.00-g sample of copper metal at 25.0 °C is heated by the addition of 133 J of energy. The final temperature of the copper is

vekshin1

<u>Answer:</u> The final temperature of the copper is 95°C.

<u>Explanation:</u>

To calculate the final temperature for the given amount of heat absorbed, we use the equation:

$Q= m\times c\times \Delta T$

Q = heat absorbed = +133 J (heat is added to the system)

m = mass of copper = 5.00 g

c = specific heat capacity of copper = 0.38 J/g ° C

$\Delta T={\text{Change in temperature}}=T_2-T_1$

$T_1=25^oC$

Putting values in above equation, we get:

$+133J=5.00g\times 0.38J/g^oC\times (T_2-25)\\\\T_2=95^oC$

Hence, the final temperature of the copper is 95°C.

3 0

2 years ago

Below are 5 sets of potential solutes for you to compare. Both members of each pair are very soluble in water. If you had equal

Gelneren [198K]

Answer:

Option D. AlCl₃, MgC₂

Explanation:

We need to dissociate all the salts, to determine the i. (Van't Hoff factor).

The salt who has the highest value, will be the better conductor of electricity

CsCl → Cs⁺ + Cl⁻ i = 2

CaCl → Ca²⁺ + Cl⁻ i = 2

CaS → Ca²⁺ + S⁻² i = 2

Li₂S → 2Li⁺ + S⁻² i = 3

KBr → K⁺ + Br⁻ i = 2

AlCl₃ → Al³⁺ + 3Cl⁻ i = 4

MgC₂ → Mg²⁺ + 2C⁻ i = 3

KI → K⁺ + I⁻ i = 2

K₂S → 2K⁺ + S⁻² i = 3

The biggest i, is in pair D.

6 0

3 years ago

What is the molar mass of cholesterol if 0.00105 mol weighs 0.406 g?

goblinko [34]

<h3>Answer: 386.67 g/mol </h3>

Explanation:

Molar Mass = Mass ÷ Mole

= 0.406 g ÷ 0.00105 mol

= 386.67 g/mol

∴ molar mass of cholesterol = 386.67 g/mol

5 0

2 years ago