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const2013 [10]
3 years ago
9

3.

Chemistry
2 answers:
allsm [11]3 years ago
7 0

Answer:

Electrons that arent electrons

Explanation:

I teach chem

goblinko [34]3 years ago
3 0

Answer:

Valence electrons are the electrons found in the highest and main energy level of the atom, being these responsible for the interaction between atoms of different species or between atoms of the same species. You can quickly determine these by looking at a periodic table like this one... Which is where the roman numbers come in and show the valence electrons. (THIS TABLE IS IN SPANISH, I hope you still recognize the symbols.) :))

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If an atom of an element has a mass number of 45 and it has 20 neutrons in its nucleus, what is the atomic number of the
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Answer:

Explanation:

uestion

If an atom of an element has a mass number of 45 and it has 20 neutrons in its nucleus, what is the atomic number of the

element?

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do you think that the continental plates continue to move across the surface of the earth? what evidence do you have to support
cestrela7 [59]
Yes I think & I Belive it moves across the surface
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Which combination of atoms can form a polar covalent bond?
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A 6.1-kg solid sphere, made of metal whose density is 2600 kg/m3, is suspended by a cord. When the sphere is immersed in a liqui
deff fn [24]

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>

6 0
3 years ago
What is 108 g +10+5+3
natali 33 [55]

ANSWER : 108 + 10 = 118

118 + ( 5 + 3 )

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<u>=</u><u> </u><u>1</u><u>2</u><u>6</u><u> </u><u>g</u>

7 0
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