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viva [34]
4 years ago
7

Why is petroleum called liquid gold?

Chemistry
1 answer:
lana66690 [7]4 years ago
3 0

Answer:

It is called liquid gold because of its high price and value and its economic need by all the countries worldwide.

Explanation:

Petroleum is present in abundant quantity in the some regions . So it is considered as Liquid gold, which they value a lot.

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Si el número atómico del Flúor es 9 y su masa atómica 19, ¿cuántos electrones, protones y neutrones, tiene? Justifique con formu
ValentinkaMS [17]

La respuesta correcta es  e) 9, 9 y 10

Explicación:

En general, la composición de los átomos incluye electrones (carga negativa), protones (carga positiva) y neutrones (carga neutra). Además, la masa atómica se refiere al número en conjunto de neutrones y protones, mientras que el número atómico define el número de protones. Es decir que masa atómica = número de protones o número atómico más de número de electrones. Además, en un átomo de carga neutra el número de electrones y protones es neutra.

De acuerdo a esto, número de protones o número atómico + número de neutrones = masa atómica

9 (número de protones) + número de neutrones = 19 (masa atómica)

número de neutrones = 19 (masa atómica) - 9 (número de protones)

número de neutrones = 10

Además, el número de protones = número de electrones por lo que 9 protones significa que hay 9 electrones

Es decir, que el número de electrones es 9, el número protones es 9, y el número de neutrones es 10

5 0
4 years ago
In the reaction: C6H6 + O2 = CO2 + H2O If 26.2 grams of C6H6 is reacted in a 0.250-liter container and this reaction is carried
Lelechka [254]
<h3>Answer:</h3>

43.33 atm

<h3>Explanation:</h3>

We are given;

Mass of C₆H₆ = 26.2 g

Volume of the container = 0.25 L

Temperature = 395 K

We are required to calculate the pressure inside the container;

First, we calculate the number of moles of C₆H₆

Molar mass of C₆H₆ =  78.1118 g/mol.

But; Moles = mass ÷ Molar mass

Moles of  C₆H₆ = 26.2 g ÷  78.1118 g/mol.

                         = 0.335 moles C₆H₆

Second, we calculate the pressure, using the ideal gas equation;

Using the ideal gas equation, PV = nRT , Where R is the ideal gas constant, 0.082057 L.atm/mol.K

Therefore;

P = nRT ÷ V

  = (0.335 mol × 0.082057 × 395 K) ÷ 0.25 L

 = 43.433 atm

Therefore, the pressure inside the container is 43.33 atm

6 0
4 years ago
How does the position of an element on the periodic table allow you to determine if the element is a metal or non-metal?
malfutka [58]

Answer:

a jagged black line along the right side of the table separates the metals from the nonmetals. The metals are to the left of the line, the nonmetals are to the right of the line, and the elements immediately next to the line are the metalloids.

Explanation:

7 0
3 years ago
Complete balanced equation for the reaction between aluminum metal (Al) and oxygen gas (O2)
WARRIOR [948]
The answer to this is <span>4 Al + 3 O2 = 2 Al2O3 i hope that this helps</span>
5 0
3 years ago
Determine which of the following statement is correct when the equilibrium constant K for a certain reaction is 10 at 298 K and
aev [14]

Answer:

4. The reaction is spontaneous at any temperatures if the standard entropy of reaction is positive.

Explanation:

Equilibrium constant decreases on increasing the temperature . So the reaction appears to be exothermic . In other words

ΔH is negative .

Δ G = ΔH - TΔS

If ΔS is positive , second  term is negative . ΔH is negative so the RHS of the equation is negative at all temperatures . Hence Δ G of the  reaction is negative . So reaction is spontaneous at any temperature.

3 0
3 years ago
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