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Lina20 [59]
3 years ago
7

Electrons move or cannot move from one object to another when rubbed together

Chemistry
2 answers:
nignag [31]3 years ago
5 0
Cannot. Hoped it Helped Please !
Mark Brainliest
Verizon [17]3 years ago
3 0
I do not know if this is correct but he we go.. 
Charging by friction- The transfer of electrons from one uncharged object to another by rubbing the objects together.

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calcium has atomic number of 20 how many electrons of a calcium atom are involved in chemical bonding
Lelu [443]

The answer is 2 electrons.


The electron configuration of calcium is 2:8:8:2

Calcium has two electrons in its outermost shell. These are its valence electrons and are the ones used in bonding with other elements.  Valence electrons of an atom are those electrons that are in its outer energy shell or that are available for bonding.

Calcium is a metal. When metals react with non-metals, electrons are transferred from the metal atoms to the non-metal atoms forming ions. The resulting compound is known  as an ionic compound.

For example, when calcium metal reacts with chlorine gas,   calcium gives up its two valence electrons and Chlorine accepts them resulting in a new substance called calcium chloride in which the two elements have ended up forming ionic bonds.

 


7 0
3 years ago
Read 2 more answers
1. How many moles of HCl are in 7.80 X 1022 molecules? Answer:___0.13 moles of HCI​
Nuetrik [128]

Answer: 7.80×10^{22}\frac{1}{6.02*10^{23} } =.13

Explanation:

8 0
2 years ago
How many grams of KF are in 2 liters of a 3.0 M solution of KF
Rufina [12.5K]

Answer:

mass ( g ) = 348 g

Explanation:

First you know : M = mole / volume (L)

in question you have the M and V and the formula of SUBSTANCE ( KF )

first you get the number of mole from equation above

so 3 = no of mole / 2

no of mole = 3 × 2 = 6 moles

and the moles equation is no of moles = mass ( g ) / molecular weight ( g/mole )

so you have already calculate the moles and you can know the MW from the Question

Mw of KF = 39 + 19 = 58

so n = mass / MW

so 6 = mass / 58

mass ( g ) = 348 g

GOOD LUCK

4 0
3 years ago
Which of the following is converted into chemical energy during photosynthesis?
castortr0y [4]
Photosynthesis is commonly understood as converting light energy to chemical energy. So, C would be the correct answer.
6 0
3 years ago
1. What is the flame color of sodium?<br> yellow-orange<br> purple<br> green<br> blue-green
juin [17]

Orange is the color of Sodium

4 0
3 years ago
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