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GalinKa [24]
4 years ago
8

What is needed for work to be done?

Chemistry
1 answer:
podryga [215]4 years ago
7 0

Answer:

Force should applied on the object and object should move.

Explanation:

Work may be defined as the movement of the object  in the direction of the applied external force. Work is a scalar quantity and shows the magnitude only.

The work needs to be done, the force should be applied on the object and the object must show some dipsplacement in the direction of force. The work can be calculated by the product of force and displacement.

Thus, the answer is force should applied on the object and object should move.

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An ion is an atom that has has gained or lost:
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Electrons, specifically valence electrons
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3 years ago
A gas has a volume of 5.00 L at 20 degrees Celsius. What is the volume of gas at 150 degrees Celsius.
WARRIOR [948]

Answer:

7.22 L

Explanation:

From the question,

Applying Charles law,

V₁/T₁ = V₂/T₂...................... Equation 1

Where V₁ = Initial volume of gas, V₂ = Final volume of gas, T₁ = Initial Temperature of gas in Kelvin, T₂ = Final Temperature of gas in Kelvin

Make V₂ the subject of the equation

V₂ = (V₁×T₂)/T₁................. Equation 2

Given: V₁ = 5.00 L, T₁ = 20 °C = (20+273) K = 293 K, T₂ = 150 °C = (150+273) K = 423 K

Substitute these value into equation 2

V₂ = (5.00×423)/293

V₂ = 7.22 L

5 0
3 years ago
What is the momentum of a 3 kg bowling ball moving at 3 m/s
kvv77 [185]

Answer:

<h2>9 kg.m/s</h2>

Explanation:

The momentum of an object can be found by using the formula

momentum = mass × velocity

From the question we have

momentum = 3 × 3

We have the final answer as

<h3>9 kg.m/s</h3>

Hope this helps you

8 0
3 years ago
A color-coded periodic table. Which elements are metals? Check all that apply. rhenium (Re) boron (B) lithium (Li) krypton (Kr)
AlekseyPX

Answer:

re) li) hg)

Explanation:

6 0
4 years ago
Read 2 more answers
Henry Moseley used X-ray experiments to determine the atomic number of elements. How did his discovery contribute to the develop
sesenic [268]

Here we have to chose the correct statement which affect the discovery of the atomic number on the periodic table.

The discovery of the atomic number of the elements: C. It allowed the elements to be placed in strict order of increasing atomic number.

The use of X-ray determined the atomic number or number of electrons present in an element. The number of electrons is the basis of generate the periodic table, where the elements are arranged in terms of the number of electrons present in the atom in early stage of periodic table.

However in later the modern periodic table generated, which has group and period in terms of their property. Although the strictness on the increasing number of electrons are followed.    

8 0
3 years ago
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