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dsp73
3 years ago
11

Explain why thermal and electrical conductivity is so high with copper

Chemistry
1 answer:
lidiya [134]3 years ago
8 0

Copper is formed of copper atoms, which are closely clustered together. If observed closely, one could witness the movement of electrons between the atoms of the copper. Each copper atom turns into a positive ion by losing one electron. Thus, copper is a lattice of positive copper ions with the movement of free electrons among them.  

Due to movement of electrons freely through the metal, they are also known as conduction electrons. The presence of these conduction electrons makes the copper a good conductor of electricity and heat.  


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How many C atoms are there in 5.25 grams of a compound containing 92.26% C and 7.74% H?
Damm [24]
Take 5.25 grams and give it proportionally to the carbon
0.9226 * 5.25 grams = 4.84 grams Carbon
Find the number of moles
(4.84 grams carbon)/(12.01 grams/mol) = 0.403 moles Carbon
The number of atoms in a mole of a substance is called Avogadro's number.
There are 6.022 * 10^23 atoms in one mole of anything
(0.403 moles Carbon) * (6.022 * 10^23 atoms/mole) = 2.43 * 10^23 atoms of Carbon
7 0
3 years ago
The half-life of C-14 is 5470 years. If a particular archaeological sample has one-quarter of its original radioactivity remaini
Gennadij [26K]

Answer:

When there remains one-quarter of the sample, the age of the sample is 10940 years

Explanation:

<u>Step 1:</u> Data given

The half-life of C-14 is 5470 years.

The half- life time is the time required for a quantity to reduce to half of its initial value.

This means after 5470 years there remains half of the C-14 sample.

To remain a quarter of the sample, another cycle of 5470 years is required.

This means 2 half-lives should have passed to remain a quarter of the sample.

<u>Step 2</u>: Calculate it's age

t/(t/1/2) = 2

⇒ with t = the age (or time) of the sample

⇒ with t(1/2) = the half-life time of the sample = 5470 years

⇒ with 2 = the number of halvf- lives passed

t/5470 = 2

t = 2*5470 = 10940 years

When there remains one-quarter of the sample, the age of the sample is 10940 years

3 0
3 years ago
If a wave has a period of 0.25 seconds, what is its frequency?
Allisa [31]
Frequency= 1/period

hence ans= 1/0.25
= 4s
6 0
3 years ago
How to tell which acid whill have the hightest perceent ionization
icang [17]

We can tell which acid which have the highest percent ionization on the basis of pH value.

<h3>What is percent ionization?</h3>

The % ionized indicates how much of the original chemical has ionized. As a result, we compare the ion concentration in solution to the neutral species' original concentration.

If any acid have a high pH value then they must show high percent ionization because they are strong in nature and show full dissociation.

Hence acids with high pH value will show highest percent ionization.

To know more about percent ionization, visit the below link:

brainly.com/question/3229194

#SPJ4

6 0
2 years ago
A wooden plank has a mass of 100kg force of 20 n was used to move it what is its acceleration​
krok68 [10]

Answer:

a= 0.2m/s²

Explanation:

Fnet = ma

20 = 100a (divide both sides by 100)

a = 0.2m/s²

4 0
3 years ago
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