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ira [324]
3 years ago
13

What is the electrode in the center of the most common dry cell made of?

Chemistry
2 answers:
Svetllana [295]3 years ago
8 0
A common dry-cell battery is the zinc-carbon battery, which uses a cell that is sometimes called the Leclanché cell. The cell is made up of an outer zinc container, which acts as the anode.
ra1l [238]3 years ago
4 0

Answer:

Graphite

Explanation:

An electrode is a solid electric conductor (usually metallic) used in electrolytic cells for carrying electric current. An electrolytic cell is made up of electrodes and electrolytes. There are two types of electrodes

  • Anode - attracts negatively charged ions (anions)
  • Cathode - attracts positively charged ions (cations)

The common dry cell is the transistor battery. The cylindrical coating of this cell is made up of zinc which serves as the anode while the center electrode which is the graphite is the cathode. Graphite is one of the allotropes of carbon and it is a good conductor of electricity.

An electrolyte is a liquid/aqueous solution that allows the passage of electric current. The electrolyte in this cell is usually made up of manganese dioxide (MnO₂),  carbon powder and ammonium chloride (NH₄Cl).

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Contact [7]

Answer:

Genetic engineering, recombinant DNA technology, genetic modification/manipulation (GM) and gene splicing are terms that apply to the direct manipulation of an organism's genes. ... Genetic engineering uses the techniques of molecular cloning and transformation to alter the structure and characteristics of genes directly.

Explanation:

8 0
3 years ago
Which energy profile best shows that the enthalpy of formation of cs2 is 89.4 kj/mol?
Kruka [31]
Answer is: B. C(s) + 2S(s) + 89.4 kJ → CS2(l).

Missing question:
A. C(s) + 2S(s) → CS2(l) + 89.4 kJ.
B. C(s) + 2S(s) + 89.4 kJ → CS2(l).
C. C(s) + 2S(s) + 89.4 kJ → CS2(l) + 89.4 kJ.
D. C(s) + 2S(s) → CS2(l).
Because enthalpy of the system is greater that zero, this is endothermic reaction (<span>chemical reaction that absorbs more energy than it releases)</span>, heat is included as a reactant.
5 0
3 years ago
A bowl of trail mix an da bowl of soup are examples of what type of matter?
melamori03 [73]
The answer would be heterogeneous 
3 0
2 years ago
He balanced equation for the reaction of acetylene, c2h2, and oxygen in an acetylene torch is 2 c2h2 + 5 o2 → 4 co2 + 2 h2o. in
pickupchik [31]
Answer: 0.4 g

Explanation:

1) Balanced chemical equation:

2) 2C2H2 + 5 O2 → 4CO2 + 2 H2O

3) mole ratios:

2 mol C2h2 : 5 mol O2

4) Convert 0.13 g C2H2 into number of moles

n = mass in grams / molar mass

molar mass C2H2 = 2 *12g/mol + 2*1 g/mol = 26 g/mol

n = 0.13 g / 26 g/mol = 0.005 mol

5) Set the proportion with the unknown

5 mol O2             x
----------------- = ---------------
2 mol C2H2      0.005 mol C2H2

x = 0.005 mol C2H2 * 5 mol O2 / 2 mol C2H2 = 0.0125 mol O2

6) Convert 0.0125 mol O2 to grams

mass = number of moles * molar mass

molar mass of O2 = 32 g/mol

mass = 0.0125 mol * 32 g/mol = 0.4 g

Answer: 0.4 g
8 0
3 years ago
Please help quickly!
Galina-37 [17]

Answer:

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Iron III - orange /brown

Nickel - green

Iron and Copper

5 0
2 years ago
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