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Pie
2 years ago
5

According to the laws of physics as scientist presently understand then when every _____ is extinguished , all live in the uni

verse will end.
Chemistry
1 answer:
kkurt [141]2 years ago
5 0

Answer:

hey listen I'll hate to take the pts and go but I have to do what a man have to do

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Change for a liquid state to a solid state is known as what phase change?
NeTakaya

Answer:

B. To change from a liquid state to a solid state is called Freezing

5 0
2 years ago
Read 2 more answers
Who no this i need help i need to pass to the next grade
Hitman42 [59]

Exothermic reactions is where  energy is released. Exothermic reactions are reactions that release energy into the environment in the form of heat. Exothermic reactions feel warm or hot or may even be explosive.

7 0
3 years ago
chlorine has two naturally occurring isotopes, Cl-35 and Cl-37. The atomic mass of chlorine is 35.45. Which of these two isotope
Sliva [168]
Cl-35, as the atomic mass of Chlorine (35.45) is closer to the number 35 than to the number 37. A higher abundance of CL-35 isotope would have caused the atomic number (which is an average of the values of all isotopes of a substances taking relative abundance into consideration) to decrease from 36, which would appear to be the average.
5 0
3 years ago
What kind of reaction does Iron (III) and copper (II) sulfate solution produce?
ivanzaharov [21]

Answer:

The answer to your question is Single replacement

Explanation:

Types of reaction in Chemistry

Synthesis           two or more reactants combine to produce one single product

Decomposition      one reactant splits producing two or more products

Single replacement  One element replaces a similar one in a compound.

Double replacement Two compounds interchange their cations and anions.

Combustion one compound reacts with oxygen to produce carbon dioxide and water.

Reaction given

                      Fe⁺²  +  CuSO₄  ⇒   Cu + FeSO₄

This is a single replacement reaction

4 0
3 years ago
Read 2 more answers
What are the products obtained in the electrolysis of molten nai?
yanalaym [24]
Answer is: sodium (Na) and iodine (I₂).

<span> First ionic bonds in this salt are separeted because of heat: 
</span>NaI(l) → Na⁺(l) + I⁻(l).

Reaction of reduction at cathode(-): Na⁺(l) + e⁻ → Na(l) /×2.

2Na⁺(l) + 2e⁻ → 2Na(l).

Reaction of oxidation at anode(+): 2I⁻(l) → I₂(l) + 2e⁻.

The anode is positive and the cathode is negative.


4 0
3 years ago
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