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olga2289 [7]
3 years ago
11

Why does ice have a different density than liquid water?

Chemistry
1 answer:
gulaghasi [49]3 years ago
4 0

Answer:

because it has lighter molecules.

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Write the electron configuration​
ycow [4]

Answer:

1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5

8 0
3 years ago
A galvanic cell is powered by the following redox reaction:2Fe+3(aq) + H2 (g) + 2OH−(aq) → 2Fe+2 (aq) + 2H2O (l)Answer the follo
ICE Princess25 [194]

Answer:

Anode: H₂(g) + 2 OH⁻(aq) → 2 H₂O(l) + 2 e⁻

Cathode: 2 Fe⁺³(aq) + 2 e⁻ → 2 Fe⁺²(aq)

E° = 1.60 V

Explanation:

Let's consider the reaction taking place in a galvanic cell.

2 Fe⁺³(aq) + H₂(g) + 2 OH⁻(aq) → 2 Fe⁺²(aq) + 2 H₂O(l)

The corresponding half-reactions are:

Anode (oxidation): H₂(g) + 2 OH⁻(aq) → 2 H₂O(l) + 2 e⁻   E°red = - 0.83 V

Cathode (reduction): 2 Fe⁺³(aq) + 2 e⁻ → 2 Fe⁺²(aq)        E°red = 0.77 V

The standard cell potential (E°) is the difference between the standard reduction potential of the cathode and the standard reduction potential of the anode.

E° = E°red, cat - E°red, an = 0.77 V - (-0.83 V) = 1.60 V

7 0
4 years ago
Which of these is an example of a physical change ?
Gre4nikov [31]
It's 1. Melting a substance. The rest are chemical changes
8 0
4 years ago
Contrast the way the conqueror comes with the way the Pilgrims came (stanzas three and four).
Masja [62]

Answer:

tbh id k i've never read it so if u could send the link I could help you.

Explanation:

7 0
3 years ago
What is the empirical formula for a compound if a sample contains 1.0 g of S and 1.5 g of O?
sammy [17]
I think it’s SO3 I’m not quite sure though
6 0
2 years ago
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