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ivanzaharov [21]
3 years ago
6

Which elements are necessary to accomplish work?

Chemistry
2 answers:
Juliette [100K]3 years ago
6 0

Answer:

The elements that are necessary to accomplish work are d) force, cause, displacement

Explanation:

Work is defined as the force that is applied on a body to move it from one point to another.

When a net force is applied to the body or a system and this produces displacement, then that force is said to perform mechanical work. This work can be positive if the system gains energy or negative if the system loses energy.

In the International System of Units, work is measured in Joule. Joule is equivalent to Newton per meter.

The work is equal to the product of the force by the distance and by the cosine of the angle that exists between the direction of the force and the direction that travels the point or the object that moves.

Then three elements are necessary to perform a job: strength, displacement and cause. For a force to perform work on an object, there must be a displacement and the force must cause the displacement.

So <u><em>the elements that are necessary to accomplish work are d) force, cause, displacement.</em></u>

lawyer [7]3 years ago
3 0

Answer:

D) force,cause, displacement

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When the volume of a gas is
neonofarm [45]

Charles law states that there is a directly proportional relationship between the volume and the temperature of the gas at certain pressure.

Therefore,

V1/T1 = V2/T2

V1 is unknown

T1 = 159K

V2 = 15.5m3

T2 = 456K

V1/159 = 15.5/456

V1 = (15.5*159)/456 = 5.404m3.

When the volume of a gas is changed from 5.404 m3 to 15.5 m3 the temperature will change from 159 K to 456 K.

5 0
3 years ago
An aqueous NaClNaCl solution is made using 111 gg of NaClNaCl diluted to a total solution volume of 1.20 LL .Calculate the molal
Aliun [14]

Answer:

The answer to your question is m = 1.6

Explanation:

Data

mass of NaCl = 111 g

volume of water = 1.2 L

Molality = ?

Formula

Molality = number of moles / volume (L)

Process

1.- Calculate the moles of NaCl

Molecular mass = 23 + 35.5 = 58.5 g

                          1 mol of ------------------- 58.5 g

                          x           -------------------- 111 g

                          x = (111 x 1) / 58.5

                          x = 1.897 moles of NaCl

2.- Calculate the mass of water

density of water = 997 kg/m³

mass = volume x density

mass = 0.0012 x 997

mass = 1.19 kg

3.- Calculate molality

m = 1.897/1.19

m = 1.6

   

7 0
3 years ago
What are the products in a neutralization reaction?
aliya0001 [1]
Acid and base reactions example is: acid+base=salt+water
7 0
3 years ago
Calculate the volume in (L) of 1.13x10^5 grams of liquid sodium which has a density of 0.929g/cm3
Yuki888 [10]

The volume of the liquid sodium is 121.64 L

<h3>What is density? </h3>

The density of a substance is simply defined as the mass of the subtance per unit volume of the substance. Mathematically, it can be expressed as

Density = mass / volume

With the above formula, we can obtain the volume of the liquid. Details below

<h3>How to determine the volume of the sodium liquid</h3>
  • Mass of liquid = 1.13×10⁵ g
  • Density of liquid = 0.929 g/cm³
  • Volume of liquid =?

Density = mass / volume

Thus,

Volume = mass / density

Volume of liquid = 1.13×10⁵ / 0.929

Volume of liquid = 121636.17 cm³

Divide by 1000 to express in liter

Volume of liquid = 121636.17 / 1000

Volume of liquid = 121.64 L

Learn more about density:

brainly.com/question/952755

#SPJ1

8 0
1 year ago
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