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Tanya [424]
3 years ago
15

Where do scientists believe chemical evolution occurred?

Chemistry
2 answers:
NeX [460]3 years ago
8 0
Hello there!

They believe that the chemical evolution occurred around 3.5 billion years ago.

They also believe that the chemical occurred in the ocean

As always, it is my pleasure to help students like you!

galben [10]3 years ago
8 0
In the ocean or in deep caves.
Probably in tidal pools.
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Alika [10]

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A DNA molecule

Explanation:

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Chemistry salt to acid and base?
Juli2301 [7.4K]
The acid is Nitric acid and the base is Zinc hydroxide.
7 0
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Which of the following is the correct wedge and dash conformation for the following Newman projection?
kakasveta [241]

We have that  the correct wedge and dash conformation for the following Newman projection is

IV

From the Diagrams above

Two CH_3 groups points on opposite sides in plane

Two Br are on same side  of plane

Two H also on same side of the plane so the plausible  structure is IV

Therefore

The Correct option is IV

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8 0
3 years ago
A particular voltaic cell operates with the reaction: Zn(s)+Cl2(g)--->Zn^2+(aq)+2Cl^-(aq) giving a cell potential of .853 V.
nadya68 [22]

Answer:

The amount of energy liberated will be 49.38 J.

Explanation:

The amount of energy liberated (gibbs free energy) can be calculated using the following equation:

ΔG° = -nFε

n: amount of moles of electrons transfered

F: Faraday's constant

ε: cell potential

20.0 g of Zn is equal to 0.30 mol.

Two electrons are transfered during the reaction.

Therefore, n = 2x0.30 ∴ n = 0.60

ΔG° = - 0.60 x 96.485 x 0.853

ΔG° = 49.38 J

3 0
4 years ago
If 18 grams of oxygen reacts completely with 4 grams of hydrogen, we would expect how many grams of water?
seraphim [82]

Answer: 22 grams because mass cannot be created or destroyed

Explanation: I just took the test

4 0
3 years ago
Read 2 more answers
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