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katrin2010 [14]
3 years ago
15

Someone help w one of these questions. Or if you know all of them surely help.

Chemistry
1 answer:
fenix001 [56]3 years ago
5 0

Answer:

1 A true

B False

C not sure about it False

D False

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The standard cell potential of the following galvanic cell is 1.562 V at 298 K. Zn(s) | Zn2+(aq) || Ag+(aq) | Ag(s) What is the
myrzilka [38]

Answer:

E = 1.602v

Explanation:

Use the Nernst Equation => E(non-std) = E⁰(std) – (0.0592/n)logQc …

             Zn⁰(s) => Zn⁺²(aq) + 2 eˉ

2Ag⁺(aq) + 2eˉ=> 2Ag⁰(s)          

_____________________________

Zn⁰(s) + 2Ag⁺(aq) => Zn⁺²(aq) + 2Ag(s)

Given E⁰ = 1.562v

Qc = [Zn⁺²(aq)]/[Ag⁺]² = (1 x 10ˉ³)/(0.150)² = 0.044

E = E⁰ -(0.0592/n)logQc = 1.562v – (0.0592/2)log(0.044) = 1.602v

4 0
3 years ago
Read 2 more answers
Burning coal produces which type of gas?
vovikov84 [41]

Answer:

carbon dioxide

Explanation:

carbon dioxide is the primary greenhouse gas produced by burning fossil fuels like coal and oil

5 0
3 years ago
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What are compounds????????????????
sweet [91]

Answer:

Compounds are pure substance consisting of two or more different atoms

8 0
3 years ago
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Which of the following statements best describes why the reaction between sodium and chlorine is not useful in fireworks? Please
nadya68 [22]

Answer:

A. a poisonous gas is one of the reactants

Explanation:

Chlorine gas is a poisonous and very toxic gas. Chlorine is a moderately reactive halogen. It is a greenish-yellow gas with choking and irritating smell. The gas is very poisonous. Proper care must be taken when working with this gas.

This is why chlorine gas are harmful in production of fireworks.

3 0
3 years ago
Please help. i don’t get what to do
Scrat [10]

I think you were doing it right. Just find something in your kitchen and google the chemical formula. And from that you can see the elements in it. For example:

Salt, NaCl, Sodium and Chlorine.

Baking Soda, NaHCO3, Sodium, Hydrogen, Carbon and Oxygen.

Vinegar, CH3COOH, Carbon, Hydrogen and Oxygen


3 0
3 years ago
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