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Andru [333]
3 years ago
13

What is the meaning of chemistry​

Chemistry
2 answers:
ser-zykov [4K]3 years ago
6 0

Chemistry is the branch of science that deals with the identification of the substances of which matter is composed.

kvv77 [185]3 years ago
5 0

Chemistry is the science of matter and its changes that occur. Everything in our universe is made up of matter and it has to have mass and take up space to be considered this.

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Water is separated into oxygen gas (o2) and hydrogen gas (h2) using a process called electrolysis. after electrolysis, 0.15 mole
VMariaS [17]
Volume of 1 mole of any gas under STP = 22.4 L,
so
0.15 mol*22.4 L/1 mol = 3.36 L of H2
7 0
3 years ago
CuCl2 + Al ---> AlCl3 + Cu
Ket [755]

For a balance chemical equation:

The number of atoms of a molecule should remain conserved that is total number of atom of a molecule in reactant side should equal to the number of atoms of a molecule in the product side.

Here also the number of atoms of an element should remain conserved on both sides, So the answer is option B.

That is

B) 3CuCl₂ + 2Al ---> 2AlCl₃ + 3Cu

Here the number of atoms of Cu, Cl and Al are equal in both side , reactant as well as product.

5 0
4 years ago
Read 2 more answers
How many Faradays of electricity are carried by 1.505×10^23 electronsk​
aksik [14]

Mole of electron required by 1.505 *10^{23} mole is 2.5* 10  ^{-1}

  • Faraday law expressed how the  change that is been being produced by a current at an electrode-electrolyte interface is related and  proportional to the quantity of electricity  that is been used.

  • There is one mole of electron required for 1 Faraday of electricity.

  • Avogadro constant is 6.02*10^{23}

  • Mole of electron can be calculated by dividing the number of electron by avogadro's constant.

=\frac{1.505*10^{23} }{6.02*10^{23} }

= 2.5* 10^{-1}  Faraday  of electricity

Therefore, it requires  2.5*10^{-1} Faraday of electricity for the 1.505 *  10^{23}  mole.

Learn more at: brainly.com/question/1640558?referrer=searchResults

3 0
2 years ago
Mwehehe poide bang pakiss?
Contact [7]

Answer:

what confused

Explanation:

6 0
3 years ago
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Red light has a wavelength of about 7×10−7 m. will exposure to red light cause electrons to be emitted from cesium?
lorasvet [3.4K]
No i dont think so i checked in my book


5 0
3 years ago
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