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IrinaK [193]
3 years ago
5

Wind eroding rocks. Is it a chemical or physical change ?

Chemistry
2 answers:
stellarik [79]3 years ago
7 0
This is a Physical change. No chemistry involved.
kow [346]3 years ago
3 0
Physical change because its physical changing the way the rocks look.
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Which of the answer choices correctly describes Le Châtlier's principle?
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<h3><u>Answer</u>;</h3>

A. When a reaction is at chemical equilibrium, a change in the system will cause the system to shift in the direction that will balance the change and help the reaction regain chemical equilibrium.

<h3><u>Explanation</u>;</h3>
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Answer:

Density of the liquid = 1470.43 kg/m³

Explanation:

Given:

Mass of solid sphere(m) = 6.1 kg

Density of the metal = 2600 kg/m³

Thus volume of the liquid :

Volume(V)=\frac{Mass(m)}{Density (\rho)}

Volume of the sphere = 6.1 kg/2600 kg/m³ = 0.002346 m³

The volume of water displaced is equal to the volume of sphere (Archimedes' principle)

Volume displaced = 0.002346 m³

Buoyant force =\rho\times gV

Where

\rho is the density of the fluid

g is the acceleration due to gravity

V is the volume displaced

The free body diagram of the sphere is shown in image.

According to image:

mg=\rho\times gV+T

Acceleration due to gravity = 9.81 ms⁻²

Tension force = 26 N

Applying in the equation to find the density of the liquid as:

6.1\times 9.81=\rho\times 9.81\times 0.002346+26

33.841=\rho\times 9.81\times 0.002346

\rho=\frac{33.841}{9.81\times 0.002346}

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<u>Thus, the density of the liquid = 1470.43 kg/m³</u>

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The fire extinguisher is the best piece of safety equipment to put out a fire on your
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The age of fossils can sometimes be determined by radiometric dating, which is based on the constant rate of decay of radioactiv
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The age of the fossil given the present amount of Carbon-14 is given in the equation,
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