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PSYCHO15rus [73]
3 years ago
13

I NEED HELP PLEASE!!!!!

Chemistry
2 answers:
lisov135 [29]3 years ago
7 0
Atoms can be divided more so thats not true. atoms from the same element arent all nesacarly identical because of isotopes
jolli1 [7]3 years ago
5 0
Atoms of different elements can combine physically and chemically. 
Chemical reactions occur when atoms are joined or separated.
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Why do we put these three words together in the 'fire triangle'?
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The three word of this is to represent what it takes to create and maintain a fire
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3 years ago
What’s the distance from the nucleus of an atom to its theoretical outer edge of electron orbits
ollegr [7]

Answer:

The range of atoms = (30-300 pm) depending upon the element

Explanation:

The Atomic radii of the atom is the distance from the center of the circle to the outermost orbital.

The center of the circle is the nucleus and the radii is the outermost boundary.

The actual size of the atom is decided on the basis of the Zeff . Also known as <em>effective nuclear charge.</em>

<em>Zeff: It is the net positive charge felt by the outermost electron by the nucleus.</em>

<em>The value of Zeff depends upon the shielding constant. More the shielding less will be the Zeff . Hence the size of the atom increases.</em>

Due to shielding the outermost electrons feel less pull of nucleus.

<em>The greater the Zeff , the smaller the radius of the atom.</em>

The formula used to calculate the atomic mass is :

r_{n}=\frac{52.9n^{2}}{Z}pm

Here "pm"= picometers

1 pm = 10^{-12}m

<u>The size of the smallest atom H-atom = 120 pm</u>

<u>The range of atoms = (30-300 pm)</u>

4 0
3 years ago
The two main types of weathering are
tester [92]

The two main types of weathering are material and chemical.

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5 0
3 years ago
Read 2 more answers
Calculate the molarity of a solution with 233.772g sodium chloride dissolved in 2,000mL of water
LekaFEV [45]

Answer:

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<em>A solution molar--> moles of solute in 1 L of solution:</em>

2 L-----4 mol NaCl

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3 0
3 years ago
Which of these steps is most likely to be part of an investigation about friction?
Serggg [28]

Answer:

I want to say option C: Testing which surfa e is easier to slide a wooden block across.

Explanation:

I'm not 100 % sure though with my answer. I'm truly so very sorry if my answer is wrong. I tried my best.

4 0
2 years ago
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