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4 years ago

13

Balance the chemical equation below using the smallest possible whole number stoichiometric coefficients NH3(g) + O2(g) + CH4(g)

→ HCN (aq) + H2O(1)

1 answer:

alexira [117]4 years ago

5 0

Answer:

$2NH_{3 (g)} + 3O_{2 (g)} +2CH_{4 (g)} --> 2HCN_{(aq)} + 6H_{2}O_{(l)}$

Explanation:

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Given the following equation,

VARVARA [1.3K]

Answer:

5 moles

Explanation:

Given data:

Number of moles of HCl = 5 mol

Number of moles of H₂O produced = ?

Solution:

Chemical equation:

HCl + NaOH → NaCl + H₂O

Now we will compare the moles of HCl with H₂O.

HCl : H₂O

1 : 1

5 : 5

5 moles of water will be produced.

7 0

3 years ago

Describe the pattern of the lewis dot structure of the first 18 elements

posledela

Explanation: Lewis dot structures are the structures which represent the valence electrons of an atom. The dots in the structure are considered as the valence electrons.

First 18 elements of the periodic table are Hydrogen(H), Helium (He), Lithium (Li), Beryllium (Be), Boron (B), Carbon (C), Nitrogen (N), Oxygen (O), Fluorine (F), Neon(Ne), Sodium (Na), Magnesium (Mg), Aluminium (Al), Silicon (Si), Phosphorous (P), Sulfur (S), Chlorine (Cl) and Argon(Ar).

The valence electrons are the electrons which are present in the outermost shell of an atom. The electronic configuration of the elements are:

Hydrogen (H) = $1s^1$ ; Valence electrons = 1

Helium (He) = $1s^2$ ; Valence electrons = 2

Lithium (Li) = $1s^22s^1$ ; Valence electrons = 1

Beryllium (Be) = $1s^22s^2$ ; Valence electrons = 2

Boron (B) = $1s^22s^22p^1$ ; Valence electrons = 3

Carbon (C) = $1s^22s^22p^2$ ; Valence electrons = 4

Nitrogen (N) = $1s^22s^22p^3$ ; Valence electrons = 5

Oxygen (O) = $1s^22s^22p^4$ ; Valence electrons = 6

Fluorine (F) = $1s^22s^22p^5$ ; Valence electrons = 7

Neon (Ne) = $1s^22s^22p^6$ ; Valence electrons = 8

Sodium (Na) = $1s^22s^22p^63s^1$ ; Valence electrons = 1

Magnesium (Mg) = $1s^22s^22p^63s^2$ ; Valence electrons = 2

Aluminium (Al) = $1s^22s^22p^63s^23p^1$ ; Valence electrons = 3

Silicon (Si) = $1s^22s^22p^63s^23p^2$ ; Valence electrons = 4

Phosphorous (P) = $1s^22s^22p^63s^23p^3$ ; Valence electrons = 5

Sulfur (S) = $1s^22s^22p^63s^23p^4$ ; Valence electrons = 6

Chlorine(Cl) = $1s^22s^22p^63s^23p^5$ ; Valence electrons = 7

Argon (Ar) = $1s^22s^22p^63s^23p^6$ ; Valence electrons = 8

Elements hydrogen and helium belong to period 1 of the period table, so the lewis dot structures will have maximum of 2 electrons

Elements from lithium to neon belong to period 2 and the lewis dot structures will have maximum of 8 electrons.

Elements from sodium and argon belong to the period 3 of the periodic table, and will have maximum of 8 electrons in their lewis dot structures.

Lewis dot structures are attached below.

6 0

4 years ago

In a sample of a solid the particles are

Andre45 [30]

I believe the answer is B.

6 0

3 years ago

If you couldn't find a skillet to cook the pancake in, what other subject could you use? why?

SVEN [57.7K]

You might wanna use a pan. It would be one of the closest thing to a skillet

7 0

3 years ago

Oil platforms may be built in the middle of the ocean. How does an oil platform work?

Korolek [52]

Answer:

A

Explanation:

There is a specific tool called an oil drill that drills into the ground and then a pipe sucks the oil up onto a vessle

8 0

3 years ago