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2 years ago

If phosphorous has 5 valence electrons, how many does sulfur have?

Chemistry

1 answer:

VARVARA [1.3K]2 years ago

5 0

Answer:

Explanation:

The atomic number for phosphorous is 15, meaning that it has 15 electrons (and protons). The first and second shells would be filled up with 2 and 8 electrons respectively, leaving 5 which goes on the third shell, which is also the valence shell, meaning phosphorous has 5 valence electrons.

Since the atomic number of sulfur is 16, the first and second shells are also filled up with 2 and 8 electrons respectively, leaving 6 to be on the third shell, the valence shell. Hence, sulfur has 6 valence electrons.

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At 700 K, the reaction2SO2(g) + O2(g) 2SO3(g)has the equilibrium constant Kc = 4.3 x 106, and the following concentrations are p

dedylja [7]

Explanation:

The given reaction is as follows.

$2SO_{2} + O_{2}(g) \rightarrow 2SO_{3}(g)$

Value of equilibrium constant is given as $K_{c}$ = 4.3 \times 10^{6}[/tex].

Concentration of given species is $[SO_2]$ = 0.010 M; $[SO_3]$ = 10.M; $[O_2]$ = 0.010 M.

Formula for experimental value of equilibrium constant (Q) is as follows.

Q = $\frac{[SO_{3}]^{2}}{[SO_{2}]^{2}[O_{2}]}$

Putting the given concentration as follows.

Q = $\frac{[SO_{3}]^{2}}{[SO_{2}]^{2}[O_{2}]}$

Q = $\frac{(10)^{2}}{(0.010)^{2}(0.010)}$

Q = $10^{8}$

It is known that when Q > $K_{eq}$ , then reaction moves in the backward direction.

When Q < $K_{eq}$ , then reaction moves in the forward direction.

When Q = $K_{eq}$ , then reaction is at equilibrium.

As, for the given reaction Q > $K_{eq}$ then it means reaction moves in the backward direction.

Thus, we can conclude that the reaction is moving in the backward direction, that is, right to left to reach the equilibrium.

5 0

3 years ago

Use the Earth's Energy Budget diagram to answer the question. Based on the diagram, less solar energy that reaches Earth is ____

Ivan

<span>absorbed, radiated
Hope this helps. </span>

5 0

3 years ago

The mass of Carbon is 12 g/mol and the mass of oxygen is 16 g/mol. What is the approximate percent composition by mass of CO2 (f

nikitadnepr [17]

Answer:

the last one

27% by 73%

Explanation:

12/44*100 for C

and

16/44*100 for O

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3 years ago

What can you conclude about these two reactions based on the chemical equations? Reaction A: 6CO2(g) + 6H2O(l) + sunlight ? C6H1

OlgaM077 [116]

Given reactions:

(A) 6CO2(g) + 6H2O(l) + sunlight → C6H12O6(aq) + 6O2(g)

(B) 2H2(g) + O2(g) → 2H2O(g) + energy

Exothermic reactions are those which proceed with the release of heat/energy. In contrast, endothermic reactions proceed with the absorption of energy in the form of heat or light.

Since reaction A required sunlight, it is endothermic. Reaction B releases energy, hence exothermic

Ans: (B)

A is endothermic

B is exothermic

8 0

3 years ago

(b) The conductivity of a 0.01 mol dm–3 solution of a monobasic organic acid in water is 5.07 × 10–2 S m–1. If the molar conduct

Zarrin [17]

Explanation:

The given data is as follows.

$\Lambda^{o}_{m}$ (NaCl) = $1.264 \times 10^{-2}$