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inysia [295]
3 years ago
9

What is the most common isotope of lithium?

Chemistry
1 answer:
Advocard [28]3 years ago
7 0
Lithium-7 is the most common isotope of lithium.
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Ca(s) + O₂(g) + S(s) → CaSO4(s)
san4es73 [151]

The mass of Calcium required to complete this reaction is 4.008 g.

  • Law of conservation of mass states that In a closed system, mass cannot be produced or destroyed, but it can be changed from one form to another.
  • The mass of the chemical constituents before a chemical reaction is equal to the mass of the constituents after the reaction.
  • In several disciplines, including chemistry, mechanics, and fluid dynamics, the idea of mass conservation is widely applied.

In the given reaction mass of product after completion of reaction is 13.614 g that means total mass of constituents before reaction should also be 13.614.

So,

mass of Ca + mass of O₂ + mass of S = mass of CaSO4

Ca + 6.400 g + 3.206 g = 13.614 g

mass of Ca = 13.614 - 9.606 = 4.008 g

Therefore, by law of conservation of mass 4.008 g of Ca is required for the completion of the reaction.

Learn more about mass conservation here:

brainly.com/question/2030891

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5 0
1 year ago
Which term refers to an electrochemical cell that uses a spontaneous redox reaction to produce an electric current?
umka21 [38]

Answer:

voltaic cell

Explanation:

3 0
2 years ago
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Why bromine is a ring deactivator as it is ortho-Para directing group??
Anettt [7]

Answer:

here you go

Explanation:

Halogens are very electronegative. This means that inductively they are electron withdrawing. However, because of their ability to donate a lone pair of electrons in resonance forms, they are activators and ortho/para directing. Electron withdrawing groups are meta directors and they are deactivators.

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3 years ago
Which is an example of potential energy?
Setler79 [48]
Probably C hope this helps
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I will give the brainliest for who answer this questio but no guessing
xz_007 [3.2K]
IVA: nonmetal/other metals VIIA:halogens VIII: Nobel Gases
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