All categories

3 years ago

No work is done when an energy transformation takes place. True or False

Chemistry

2 answers:

Finger [1]3 years ago

6 0

I would go with the statement is : False

-Hope this helps.

Roman55 [17]3 years ago

4 0

<span>No work is done when an energy transformation takes place, would be a false statement.
Reasoning: When you working energy is taking place.

HOPE THIS HELPS! ^_^</span>

You might be interested in

Specify which atoms, if any, bear a formal charge in the Lewis structure given and the net charge for the species.

ozzi

Answer :

Formal charge on C: (-1)

Formal charge on N: (0)

Net charge: (-1)

Explanation :

First we have to determine the Lewis-dot structure of $CN^-$ .

Lewis-dot structure : It shows the bonding between the atoms of a molecule and it also shows the unpaired electrons present in the molecule.

In the Lewis-dot structure the valance electrons are shown by 'dot'.

The given molecule is, $CN^-$

As we know that carbon has '4' valence electrons and nitrogen has '5' valence electrons.

Therefore, the total number of valence electrons in $CN^-$ = 4 + 5 + 1= 10

According to Lewis-dot structure, there are 6 number of bonding electrons and 4 number of non-bonding electrons.

Now we have to determine the formal charge for each atom.

Formula for formal charge :

$\text{Formal charge}=\text{Valence electrons}-\text{Non-bonding electrons}-\frac{\text{Bonding electrons}}{2}$

$\text{Formal charge on C}=4-2-\frac{6}{2}=-1$

$\text{Formal charge on N}=5-2-\frac{6}{2}=0$

Net charge = -1 + 0 = -1

4 0

4 years ago

The rock in a particular iron ore deposit contains 78% Fe2O3 by mass. How many kilograms of the rock must a mining company proce

Studentka2010 [4]

Answer:

103 so easy so free dogwater

Explanation:

6 0

3 years ago

4. Thermal conduction works when two objects are in _______________ with each other. The _______________ energy of the molecules

Advocard [28]

Answer:

hajhsajjsha

Explanation:

4 0

3 years ago

What’s the difference between grazing and true predation

Mila [183]

Answer:

For terrestrial animals, grazing is normally distinguished from browsing in that grazing is eating grass or forbs, and browsing is eating woody twigs and leaves from trees and shrubs. Grazing differs from true predation because the organism being grazed upon is not generally killed.

Explanation:

7 0

3 years ago

How many moles are in 3.86 x 1023 molecules of Carbon Dioxide (CO2)?

Yuri [45]

Answer:

<h2>0.64 moles </h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

$n = \frac{N}{L}$

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

$n = \frac{3.86 \times {10}^{23} }{6.02 \times {10}^{23} } = \frac{3.86}{6.02} \\ = 0.641196...$

We have the final answer as

<h3>0.64 moles</h3>

Hope this helps you

3 0

3 years ago