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2 years ago

Why have scientists reasoned that Earth's outer core is liquid?

Chemistry

1 answer:

Gemiola [76]2 years ago

3 0

Because it is extremely hot.

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A piston contains 0.39L of air at 1.0 atm. If the pressure on the piston is increased to 5.6 atm, what is the new volume?

bazaltina [42]

The new volume : 0.07 L

<h3>Further explanation</h3>

Boyle's Law

At a constant temperature, the gas volume is inversely proportional to the pressure applied

$\rm p_1V_1=p_2.V_2\\\\\dfrac{p_1}{p_2}=\dfrac{V_2}{V_1}$

P₁=1 atm

V₁=0.39 L

P₂=5.6 atm

$\tt V_2=\dfrac{P_1.V_1}{P_2}\\\\V_2=\dfrac{1\times 0.39}{5.6}\\\\v_2=\boxed{\bold{0.07~L}}$

3 0

3 years ago

Explain why the metals conduct electricity.

aleksley [76]

Answer:

Metals conduct electricity because they have free Electrons in them which helps the current to move eaisily

6 0

2 years ago

Explain the term contact force and give examples

aliya0001 [1]

Answer & Explanation:

In physics, a contact force is a force that acts at the point of contact between two objects, in contrast to body forces. Contact forces are described by Newton's laws of motion, as with all other forces in dynamics. Contact force is the force in which an object comes in contact with another object. Contact forces are also direct forces. Contact forces are ubiquitous and are responsible for most visible interactions between macroscopic collections of matter. Pushing a car up a hill or kicking a ball or pushing a desk across a room are some of the everyday examples where contact forces are at work. In the first case the force is continuously applied by the person on the car, while in the second case the force is delivered in a short impulse.

3 0

3 years ago

Which family contains elements with a full octet of valence electrons?

iren [92.7K]

D. the noble gasses !!!!

5 0

3 years ago

Read 2 more answers

Define shielding and effective nuclear charge. What is the connection between the two?

ivolga24 [154]

Answer:

The relation between the shielding and effective nuclear charge is given as

$Z_{eff} = Z -S$

where s denote shielding

z_{eff} denote effective nuclear charge

Z - atomic number

Explanation:

shielding is referred to as the repulsion of an outermost electron to the pull of electron from valence shell. Higher the electron in valence shell higher will be the shielding effects.

Effective nuclear charge is the amount of net positive charge that valence electron has.

The relation between the shielding and the effective nuclear charge is given as

$Z_{eff} = Z -S$

wheres denote shielding

z_{eff} denote effective nuclear charge

Z - atomic number

8 0

2 years ago