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wlad13 [49]
2 years ago
13

Hello people ~help me with these questions ​

Chemistry
2 answers:
Paraphin [41]2 years ago
8 0

#1

  • The formula is NaHCO_3

If it is mixed with water or aqueous then it forms basic solvent.

#2

Soda lime is a key reagent in purification of organic compounds.

  • Its basic
  • Its the mixture of NaOH and CaO
olganol [36]2 years ago
4 0

  • The aqueous of baking soda is basic.

\\ compound: sodium bicarbonate || NaHCO₃ \\

  • The aqueous solution of soda lime is basic.

\\ compound: CaHNaO₂ || sodium calcium hydrate \\

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An electrochemical cell is constructed such that on one side a pure lead electrode is in contact with a solution containing Pb2+
Ugo [173]

Answer:

-490.7 K

Explanation:

Given:

[Ni^2+]= 0.4 M

[Pb^2+]=0.002 M

∆V= -0.012 V

VNi= -0.250V

VPb= -0.126V

F= 96500 C

R= 8.314 JK-1 mol-1

n= 2

From

T= -nF/R [∆V-(VNi-VPb)/ln [Pb2+]/[Ni2+]]

T= 2(96500)/8.314[ (-0.012) -(-0.250) - (-0.126))/ln[0.002]/[0.4]

T= 23213.856(0.112/(-5.298))

T= -490.7 K

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3 years ago
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Romashka [77]

Answer:

Energy and power are closely related but are not the same physical quantity. Energy is the ability to cause change; power is the rate energy is moved, or used. Energy main article Energy is the ability to create a change, for example, creating motion. Tasks (like lifting a box) require an amount of energy to complete.

Explanation:

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2 years ago
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