Given the system at equilibrium:2POCl3(g) + energy <==> 2PCl3(g) + O2(g)
Which changes occur when O2(g) is added tothis system?
(1) The equilibrium shifts to the right and the concentration of PCl3(g) increases.
(2) The equilibrium shifts to the right and the concentration of PCl3(g) decreases.
(3) The equilibrium shifts to the left and the concentration of PCl3(g) increases.
(4) The equilibrium shifts to the left and the concentration of PCl3(g) decreases.
Answers
Given the data from the question, the correct answer to the question is:
The equilibrium shifts to the left and the concentration of PCl₃(g) decreases. (Option 4)
What is chemical equilibrium?
This is simply defined as a state in a chemical system where there is no observable change in the properties of the system with time.
A French scientist postulated a principle which helps us to understand a chemical system in equilibrium.
The principle states as follow:
- If a an external constraint such as change in temperature, pressure or concentration is imposed on a system in equilibrium, the equilibrium will shift so as to neutralize the effect.
How to determine the position of equilibrium constant
Considering the question given above, we are concerned with O₂ (i.e concentration) being added to the reaction
2POCl₃(g) + energy <=> 2PCl₃(g) + O₂(g)
According to the principle given above, if more O₂ is added, then, PCl₃ and O₂ will react to produce more POCl₃. Thus, the equilibrium will shift to the left and also PCl₃ will reduce.
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A protein denatures when you cook it at 60°C. What is that temperature on the Kelvin scale?
When atoms react they form a chemical bond which is defined as?
A hydrocarbon molecule is considered to be saturated when the molecule contains
a gas that ignites a glowing splint is oxygen
Answers
The statement is true , oxygen is a gas which ignites a glowing splint.
How does oxygen ignite a glowing splint?
A splint is a simple piece which is used in scientific laboratories. They are typically long, thin strips of wood of about 6 inches long and 1/4 inches wide. They are consumable and inexpensive. They are used for lighting burners , chemical identification of various gases .
For gases which are hard to distinguish , a glowing splint test is used for identification of gases. . These tests are useful for identifying whether the gas is oxidizing,flammable or chemically inert.Oxygen is one of the gases which can be identified using the splinter test as it is combustible.
For the test, the splint is lit and is allowed to burn for a fraction of seconds and then blown out as the tip is still hot it is introduced into the jar containing the oxygen gas and thus re-igniting the splinter.
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1. All neutral sodium atoms have 11 protons
and 11 electrons.
2. All sodium atoms have the atomic number
11.
3. All sodium atoms have the same number
of protons.
4. All sodium atoms have 11 neutrons.
5. All atoms with atomic number 11 are
sodium atoms.
Answers
All neutral sodium atoms have 11 protons and 11 electrons is about sodium atoms (Na) is not correct. Therefore, option 1 is correct.
Which are neutral atoms?
When an atom has the same number of electrons and protons, it has the same number of negative (electrons) and positive (protons) electric charges (the protons).
As a result, the total electric charge of the atom is zero, and it is said to be neutral. As a result, all elements in the periodic table have neutral atoms.
The sodium atom contains 11 electrons. As sodium atom loses one electron to form sodium ion, sodium ion has ten electrons. Only sodium atoms have a strong reaction with water, whereas sodium ions do not.
Thus, All neutral sodium atoms have 11 protons and 11 electrons is about sodium atoms (Na) is not correct, option 1 is correct.
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Answer:
1 is not correct ......
Answers
The molarity of the solution is the ratio of moles of solute to the volume of the solution in L. The molar mass of sodium carbonate is 106 g/mol and molarity is 0.167 M.
What is molar mass?
Molar mass is the mass of the compound that is given by the addition of the atomic mass of the individual atom present in the compound with respect to their stoichiometry coefficients.
The molar mass (M) of sodium carbonate can be given as,
Here mass of sodium = 23, carbon = 12 and oxygen = 16
Substituting values of the atomic mass we get:
Hence, the molar mass of sodium carbonate is 106 g/mol.
Now molarity of sodium carbonate can be estimated as:
Therefore, 106 g/mol is the molar mass and 0.16 M is the molarity of sodium carbonate.
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=2(23)+12+3(16)
=46+12+48
=106 g/mol
the molar mass of Na2CO3 is 106 g/mol
m=106g M=106 g/mol n=m/M
n=m/M n=106/106 n=1mol
Answers
Answer: The ionic characteristic of oxygen is that it tends to gain 2 electrons and form anions with a charge of -2 in order to achieve a stable electron configuration.
Explanation:
(2) electrons and protons
(3) neutrons and protons
(4) neutrons, protons, and electrons
Answers
The nucleus of an atom contains the majority of its mass and is composed of two types of subatomic particles: protons and neutrons.
1. Protons: Protons are positively charged particles found in the nucleus of an atom. Each proton carries a charge of +1 and has a relatively high mass compared to electrons. The number of protons in an atom's nucleus determines its atomic number, which in turn defines the element. In the case of helium-4 (He-4), it has an atomic number of 2, indicating that there are two protons in its nucleus.
2. Neutrons: Neutrons are electrically neutral particles, meaning they have no net charge. They are also located in the nucleus of an atom. Neutrons contribute to the mass of the nucleus and help stabilize it by balancing the electrostatic repulsion between positively charged protons. Helium-4, being a stable isotope of helium, has two neutrons in its nucleus, along with the two protons.
Electrons, on the other hand, are found in electron shells or orbitals outside the nucleus, not within it. Their role is to move around the nucleus and create the electron cloud or electron configuration, which determines an atom's chemical properties.
In summary, the nucleus of a helium-4 atom consists of neutrons and protons, making option (3) "neutrons and protons" the correct choice. Electrons, which are negatively charged, are located outside the nucleus and are involved in chemical interactions and bonding.
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(2) Reaction products contribute to acid rain.
(3) It is impossible to control nuclear fission.
(4) It is difficult to dispose of wastes
Answers
The problem that is commonly associated with nuclear power facilities is "It is difficult to dispose of wastes" Option D. This is further explained below.
What are nuclear power facilities?
Generally, Nuclear power plants are simply defined as using the heat generated by nuclear fission to heat water. Atoms are torn apart in nuclear fission to generate smaller atoms.
In conclusion, nuclear power facilities have waste compounds that are hard to decompose.
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(2) False, its burning coal that contributes to acid rain, since it contains sulfur
(3) False again, we can control the reaction with aptly named control rods, which are typically made of boron, to absorb some of the neutrons flying around in the chain reaction
(4) True, radioactive waste is very difficult to dispose of, and is also very dangerous. Sources of radiation can remain so for millions of years