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3 years ago

9

A phase change is an example of a (option 1) Nuclear Change (option 2) Physical change (option 3) chemical change (option 4) cov

alent change

2 answers:

masha68 [24]3 years ago

6 0

<span>A phase change is an example of a
Physial change</span>

Sedbober [7]3 years ago

6 0

B.) <span>A phase change is an example of a "Physical Change"

Hope this helps!</span>

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The smallest unit of an element that maintains the properties of that element

puteri [66]

Answer:

I think your answer is <em><u>Atoms</u></em> .

Explanation:

<em><u>Defination of Atoms?</u></em>

An Atoms is the smallest unit of an element that still has all the properties of that substance.

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3 years ago

What is the relationship between electric field lines and equipotential lines that you observed in doing the lab

lidiya [134]

Answer:

Explained below

Explanation:

Generally speaking, we know in physics that Electric field lines are lines which usually start at positive charges and deflect away from them to terminate at the negative charges. Meanwhile Equipotential lines are lines that are used to connect points located on the same electric potential.

Finally, in conclusion, electric field lines are usually lines that go through in a perpendicular manner across every equipotential lines.

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3 years ago

The area of the atom surrounding the nucleus is mostly what

alexdok [17]

Empty space; an atom consists of a dense, positively charged nucleus surrounded by a "cloud" of negatively charged electrons

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3 years ago

A container with volume 1.83 L is initially evacuated. Then it is filled with 0.246 g of N2. Assume that the pressure of the gas

alisha [4.7K]

Answer:

The pressure is $P = 1652 \ Pa$

Explanation:

From the question we are told that

The volume of the container is $V = 1.83 \ L = 1.83 *10^{-3 } \ m^3$

The mass of $N_2$ is $m_n = 0.246 \ g = 0.246 *10^{-3} \ kg$

The root-mean-square velocity is $v = 192 \ m/s$

The root -mean square velocity is mathematically represented as

$v = \sqrt{ \frac{3 RT}{M_n } }$

Now the ideal gas law is mathematically represented as

$PV = nRT$

=> $RT = \frac{PV}{n }$

Where n is the number of moles which is mathematically represented as

$n = \frac{ m_n }{M }$

Where M is the molar mass of $N_2$

So

$RT = \frac{PVM_n }{m _n }$

=> $v = \sqrt{ \frac{3 \frac{P* V * M_n }{m_n } }{M_n } }$

=> $v = \sqrt{ \frac{ 3 * P* V }{m_n } } }$

=> $P = \frac{v^2 * m_n}{3 * V }$

substituting values

=> $P = \frac{( 192)^2 * 0.246 *10^{-3}}{3 * 1.83 *10^{-3} }$

=> $P = 1652 \ Pa$

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3 years ago

___________________ and ___________________________ are two main types of waves.

iris [78.8K]

Answer:

its A

Explanation:

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4 years ago