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lutik1710 [3]
2 years ago
11

Explain why copper has a high thermal conductivity.

Chemistry
1 answer:
Katarina [22]2 years ago
7 0

Explanation:

So copper is a lattice of positive copper ions with free electrons moving between them. 

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While exploring a coal mine, scientists found plant fossils in the ceiling of the mine which had been preserved by an earthquake
ale4655 [162]

Answer:

11552.45 years

Explanation:

Given that:

Half life = 5730 years

t_{1/2}=\frac{\ln2}{k}

Where, k is rate constant

So,  

k=\frac{\ln2}{t_{1/2}}

k=\frac{\ln2}{5730}\ years^{-1}

The rate constant, k = 0.00012 years⁻¹

Using integrated rate law for first order kinetics as:

[A_t]=[A_0]e^{-kt}

Where,  

[A_t] is the concentration at time t

[A_0] is the initial concentration

Given that:

The rate constant, k = 0.00012 years⁻¹

Initial concentration [A_0] = 160.0 counts/min

Final concentration [A_t] = 40.0 counts/min

Time = ?

Applying in the above equation, we get that:-

40.0=160.0e^{-0.00012\times t}

e^{-0.00012t}=\frac{1}{4}

-0.00012t=\ln \left(\frac{1}{4}\right)

t=11552.45\ years

7 0
3 years ago
What is the scientific name for weight?
katovenus [111]

Hello the term for weight is newton

hope this helped.

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5 0
3 years ago
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How many molecules are in 4.62 moles of nitric acid (HNO3)?
Lena [83]

Answer:

2.8x10^24

Explanation:

To convert moles to molecules, multiply the number of moles by Avagadro's number (6.02x10^23. Round if required.

4.62mol × 6.02x10^23 = 2.8x10^24

6 0
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¿Cuáles son las formas alotrópicas del carbono (como se encuentra en la naturaleza)?
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Explanation:

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3 years ago
Convert 112°C to Kelvin.
podryga [215]
112°C is 385.15 Kelvin
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2 years ago
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