All categories

2 years ago

how are pure carbon, oxygen and hydrogen different from the compound ethanol which contains all three of those elements?

1 answer:

3 0

Carbon, oxygen, & hydrogen may all be elements found in ethanol, but when separated, they have completely different chemical compounds. They are pure elements where as ethanol is a mixture.

You might be interested in

Stabiliţi numerele de oxidare ale tuturor elementelor prezente în următoarele substanţe chimice, ţinând cont de principalele reg

natita [175]

Answer:

N = +2

O = -2

Na = +1

O = -2

N = +5

O = -2

Al = +3

P = +5

O = -2

Ca = +2

C = +4

O = -2

Mn = +7

K = +1

O = -2

K = +1

Cr = +6

O = -2

Cl = +7

Cr = +1

O = -2

H = +1

Cr = +5

O = -2

H = +1

Cr = +3

O = -2

H = +1

Cr = +1

Explanation:

A. NU

Numărul de oxidare a azotului = +2

Numărul de oxidare a oxigenului = -2

b. NaNO₃

Numărul de oxidare de Na = +1

Numărul de oxidare de O = -2

Numărul de oxidare de N = +5

c. AlPO₄

Numărul de oxidare de O = -2

Numărul de oxidare al Al = +3

Numărul de oxidare al P = +5

d. carbonat de calciu

Numărul de oxidare de O = -2

Numărul de oxidare de Ca = +2

Numărul de oxidare de C = +4

e. KMnO₄

Numărul de oxidare de O = -2

Numărul de oxidare al Mn = +7

Numărul de oxidare al lui K = +1

f. K₂Cr₂O₇

Numărul de oxidare de O = -2

Numărul de oxidare al lui K = +1

Numărul de oxidare al Cr = +6

g. HClO₄

Numărul de oxidare de O = -2

Numărul de oxidare al Cl = +7

Numărul de oxidare al Cr = +1

h. HClO₃

Numărul de oxidare de O = -2

Numărul de oxidare al lui H = +1

Numărul de oxidare al Cr = +5

i. HClO₂

Numărul de oxidare de O = -2

Numărul de oxidare al lui H = +1

Numărul de oxidare al Cr = +3

k. HClO

Numărul de oxidare de O = -2

Numărul de oxidare al lui H = +1

Numărul de oxidare al Cr = +1.

6 0

1 year ago

This is how krypton appears in the periodic table.A purple box has K r at the center and 36 above. Below it says krypton and bel

GarryVolchara [31]

The number of protons in an atom of krypton is 36.

<u>Explanation:</u>

The number written above the symbol of Kr in the periodic table represents the atomic number of the element . Then the number written in the below represents the mass number.

So the mass number of krypton is 84 and the atomic number of krypton is 36. As it is known that number of protons and electrons will be equal in a stable element. Thus, the krypton atom will be having 36 protons.

7 0

1 year ago

Read 2 more answers

What is the formula when the halogen from 3rd principal energy level combines with you alkaline earth metal from the 4th energy

Korvikt [17]

Answer: $CaCl_2$

Explanation:

Principle Quantum Numbers : It describes the size of the orbital and the energy level. It is represented by n. Where, n = 1,2,3,4....

Halogen with n=3 is chlorine.

Alkaline earth metal with n = 4 is calcium.

An ionic bond is formed when an element completely transfers its valence electron to another element.

Electronic configuration of calcium

$[Ca]=1s^22s^22p^63s^23p^64s^2$

calcium atom will loose one electron to gain noble gas configuration and form calcium cation with +2 charge.

$[Ca^{2+}]=1s^22s^22p^63s^23p^6$

Electronic configuration of chlorine:

$[Cl]=1s^22s^22p^63s^23p^5$

Chlorine atom will gain one electron to gain noble gas configuration and form chloride ion with -1 charge.

$[Cl^-]=1s^22s^22p^63s^23p^6$

Here $Ca^{2+}$ cation and chloride $Cl^{-}$ anion combine and their oxidation states are exchanged and written in simplest whole number ratios to give neutral $CaCl_2$ .