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elena-s [515]
3 years ago
14

Fossils can be body parts of ancient organisms, or they can be traces. Give five examples of traces. Help this is due today!!!!!

7 grade
Chemistry
1 answer:
SSSSS [86.1K]3 years ago
6 0

Burrows, tracks, coprolites, nests and footprints are examples of traces that can be found in a fossil.

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Is atmosphere nitrogen denser than pure nitrogen​
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Answer:

Atmospheric nitrogen is not heavier than chemical nitrogen, largely because “chemical nitrogen” is ultimately derived from atmospheric nitrogen. On the other hand, you could be asking why the atomic mass of nitrogen is not the same as the mass of nitrogen gas; that's because gaseous nitrogen is diatomic, .

Explanation:

This is from Google.

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3 years ago
Compared to a sodium atom in the ground state a sodium atom in the excited state must have ?
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An electron with greater energy.

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What is the chemical equation for lead (ll) acetate reacts with potassium iodide to produce lead(ll) iodide and potassium acetat
cluponka [151]

Answer:

Pb(C2H3O2)2 + KI ----> PbI2 + KC2H3O2

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2 years ago
What mass of cu(s)cu(s) is electroplated by running 14. 5 aa of current through a cu2 (aq)cu2 (aq) solution for 4. 00 hh?
galina1969 [7]

The mass of Copper electroplated is 68.76 g

<h3>What is electroplating?</h3>

The process of plating a metal onto another is known as electroplating.

It is often used to prevent corrosion of metal or for the decorative purposes

In this process, electric current is passed through an aqueous solution containing dissolved cations.

The dissolved cations are reduced developing a thin metal coating on the electrode.

At cathode,

Cu^{2+}(aq) + 2e^-\rightarrow      Cu(s)

Current, I = 14.5 A

Time, t = 4 hrs = 4×60×60 = 14400 sec

Charge, q = It = 14.5×14400= 208800 C

Copper metal deposited by 2×96487 C = 63.55 g

Copper metal deposited by 208800 C = \frac{63.55 \times208800}{2\times96487}

                                                         = 68.76g

Hence, The mass of Copper electroplated is 68.76 g

Learn more about electroplating:

brainly.com/question/22104403

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4 0
1 year ago
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What happens when the temperature of a solid reaches it’s melting point
IgorLugansk [536]
The solid melts and becomes a liquid.
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3 years ago
Read 2 more answers
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