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natima [27]
3 years ago
5

How many dozens of copper atoms are in a penny.?

Chemistry
2 answers:
77julia77 [94]3 years ago
7 0

\boxed{2.5 \times {{10}^{21}}{\text{ dozen}}} ofcopper atoms are present in a penny.

Further Explanation:

Atom is the smallest particle and is building block of matter. It comprises of a central part called atomic nucleus that is surrounded by electrons revolving in circular orbits. Atomic nucleus consists of protons and electrons while electronsare present around it. Electrons are negatively charged particles, protons are positively charged particles and neutrons have no charge.

To calculate:

Number of copper atoms in 1 penny

One penny of pure copper consists of 3.0 \times {10^{22}}{\text{ atoms}} of copper. A dozen is one of the units of measurement. 12 quantities of anything make up one dozen. So one dozen is equivalent to 12 quantities. Such quantities can be atoms, molecules, ions, formula units and many other things as are required according to the problem to be solved.

Since 12 atoms are present in one dozen, number of dozen in 3.0 \times {10^{22}}{\text{ atoms}}  of copper can be calculated as follows:

\begin{aligned}{\text{Number of dozen}} &= \left( {3.0 \times {{10}^{22}}{\text{ atoms}}} \right)\left( {\frac{{1{\text{ dozen}}}}{{12{\text{ atoms}}}}} \right) \\&= 2.5 \times {10^{21}}{\text{ dozen}} \\\end{aligned}  

Learn more:

  1. How many moles of Cl are present in 8 moles of {\text{CC}}{{\text{l}}_4}? brainly.com/question/3064603
  2. Calculate the moles of ions in HCl solution: brainly.com/question/5950133

Answer details:

Grade: Senior School

Subject: Chemistry

Chapter: Mole concept

Keywords: penny, copper atoms, 3.0*10^22 atoms, dozen, 12 quantities, number of copper atoms, pure copper, atoms, ions, molecules, protons, electrons, neutrons, negatively charged, positively charged, no charge.

NikAS [45]3 years ago
3 0

There is 2.5 .10²¹ dozen  of copper atoms are in a penny

<h3>Further explanation </h3>

Stochiometry in Chemistry learns about chemical reactions mainly emphasizing quantitative, such as calculation of volume, mass, number, which is related to the number of ions, molecules, elements etc.

In chemical calculations, the reaction can be determined, the number of substances that can be expressed in units of mass, volume, mole, or determine a chemical formula, for example the substance level or molecular formula of hydrate.

A mole is a unit of many particles (atoms, molecules, ions) where 1 mole is the number of particles contained in a substance that is the same amount as many atoms in 12 gr C-12

1 mole = 6.02.10²³ particles

While the number of moles can also be obtained by dividing the mass (in grams) with

While the number of moles can also be obtained by dividing the mass (in grams) with

\large{\boxed{\bold{mole\:=\:\frac{grams}{ the\:relative\:mass\:of\:elements\:or\:the relative\:mass\:of\:molecules} }}}

The complete question must be :

A pure copper penny contains approximately 3.0. 10²² copper atoms.

1 doz = 12

1 gross = 144

1 ream = 500

1 mol = 6.022 . 10²³

Use these definitions to determine the following:

How many dozens of copper atoms are in a penny.

Because there is 12 atoms for 1 dozen then , in a penny

3.0. 10²² : 12 atoms = 2.5 .10²¹ dozen

<h3>Learn more </h3>

Avogadro's number

brainly.com/question/859564

carbon atoms in 1.50 g of butane

brainly.com/question/5122019

a mole and Avogadro’s number

brainly.com/question/1445383

Keywords: mole, Avogadro’s number, a penny, copper, atoms

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Which of the following elements would require the most energy to
umka2103 [35]

Option D:  Chromium would require the most energy to convert one mole of gaseous atoms into gaseous ions each carrying two positive charges.

<h3>What does the term “ionization energy” mean? </h3>

The ionization energy measures an element’s ability for participating in any chemical processes that calls up for the creation of ions or the donation of other electrons.

It is defined as the energy that any electron present in a gaseous atom or ion has in order to absorb so that it comes out of the influence of the nucleus and hence freely move

Ionization energy is also said as the minimum energy required to remove the most loosely bound electron that is present in an isolated gaseous atom or a positive ion or a molecule.

It can be easily connected to the type of chemical bonds that exist between the components in the compounds that they form.

<h3>Which element ionizes most energetically?</h3>

Helium, because it has the highest first ionization energy, whereas francium has one of the lowest.

To know more about Ionization energy visit:

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#SPJ9

8 0
1 year ago
Which salt is produced when copper oxide reacts with hydrochloric acid?
Brilliant_brown [7]
It forms copper chloride
5 0
3 years ago
Read 2 more answers
If an object has a mass of 180 g and a density of 6 g/cm^3, what is the volume of the object?
cupoosta [38]

Answer:

<h3>The answer is 30 cm³</h3>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

volume =  \frac{mass}{density} \\

From the question

mass = 180 g

density = 6 g/cm³

We have

volume =  \frac{180}{6}  \\

We have the final answer as

<h3>30 cm³</h3>

Hope this helps you

5 0
3 years ago
I NEED HELP ASAP!!!
Rus_ich [418]

Explanation:

To answer this question, we'll need to use the Ideal Gas Law:

p

V

=

n

R

T

,

where

p

is pressure,

V

is volume,

n

is the number of moles

R

is the gas constant, and

T

is temperature in Kelvin.

The question already gives us the values for

p

and

T

, because helium is at STP. This means that temperature is

273.15 K

and pressure is

1 atm

.

We also already know the gas constant. In our case, we'll use the value of

0.08206 L atm/K mol

since these units fit the units of our given values the best.

We can find the value for

n

by dividing the mass of helium gas by its molar mass:

n

=

number of moles

=

mass of sample

molar mass

=

6.00 g

4.00 g/mol

=

1.50 mol

Now, we can just plug all of these values in and solve for

V

:

p

V

=

n

R

T

V

=

n

R

T

p

=

1.50 mol

×

0.08206 L atm/K mol

×

273.15 K

1 atm

= 33.6 L

this is not the answer but it will help you

do by the formula it is on the answer

3 0
2 years ago
2. Which equation shows the relationship between the Kelvin and Celsius temperature scales?
givi [52]

Answer: I think the right answer is c

7 0
2 years ago
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