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rosijanka [135]
3 years ago
12

Would changing the physical property of a substance will create a new substance true or false ​

Chemistry
1 answer:
NikAS [45]3 years ago
3 0

Answer:

True

Explanation:

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Please help make sure its correct thanks
Wewaii [24]

The empirical formula of metal iodide : CoI₃(Cobalt(III) Iodide)

<h3>Further explanation</h3>

13.02 g sample of Cobalt , then mol Co(MW=58.933 g/mol) :

\tt mol=\dfrac{mass}{Ar}=\\\\mol=\dfrac{13.02~g}{58.933}\\\\mol=0.221

Mass of metal iodide formed : 97.12 g, so mass of Iodine :

\tt =mass~metal~iodide-mass~Cobalt\\\\=97.12-13.02\\\\=84.1~g

Then mol iodine (MW=126.9045 g/mol) :

\tt \dfrac{84.1}{126.9045}=0.663

mol ratio of Cobalt and Iodine in the compound :

\tt 0.221\div 0.663=1\div 3

5 0
3 years ago
What temperature does table salt melt at?
adoni [48]

1,474 degrees fahrenheit (801 degrees celsius)

8 0
3 years ago
Read 2 more answers
Which of the following does not have a global cycle?
stepan [7]
It is iron

Hope that helps :))
7 0
3 years ago
Read 2 more answers
Classify each of the following compounds as an acid, base, or both. Be sure to answer all parts
hichkok12 [17]

Explanation:

According to Bronsted-Lowry an acid is defined as the specie which is able to donate hydrogen ions when dissolved in water.

For example, HCl \rightarrow H^{+} + Cl^{-}

On the other hand, bases are the species which are able to donate hydroxide ions when dissolved in water.

For example, NaOH \rightarrow Na^{+} + OH^{-}

A specie which is able to accept a hydrogen atom and also able to donate a hydroxide ion will act as both acid and a base.

For example, CH_{3}CH_{2}OH is able to donate a hydroxide ion and simultaneously can accept a hydrogen ion.

In CH_3CH_2CH_2CH_3, the hydrogen atoms are strongly held together by the carbon atoms due to the small electronegativity difference between carbon and hydrogen atom. Hence, it will be a weak acid.

On the other hand, CH_3CO_2CH_3 can loose a hydrogen atom or it can also gain a hydroxyl group. This is due to the electronegativity difference between oxygen and hydrogen atom.

Thus, we can conclude that following compounds are classified as follows.

  • CH_{3}CH_{2}OH - can be both acid and base
  • CH_3CH_2CH_2CH_3 - very weak acid
  • CH_3CO_2CH_3 - can be both acid and base
3 0
3 years ago
What would be the answer
ser-zykov [4K]

Answer:

4

Explanation:

The balanced equation for the reaction is as follows:

4Al + 3O2 --> 2(Al2O3)

4 0
4 years ago
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