Substances made of two or more elements which are not chemically bonded are known as
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5. Which quantities must be conserved in all chemical reactions?
What property of an atom determines its general reactivity?
What volume of a 2.5 M stock solution of acetic acid (HC2H3O2) is required to prepare 100.0 milliliters of a 0.50 M acetic acid solution?
Of the following reactions, which one produces oxygen gas?Fermentation Anaerobic respiration Aerobic respiration Photosynthesis
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Answer: industrial smog.
Explanation:
The industrial smog typically exists in the urban industrial areas where the large scale burning of the fossil fuels may lead to generation of huge amount of smoke and sulfur dioxide gas liberated into the atmosphere. These gaseous products gets mixed with the droplets of fog already present in the atmosphere. This lead to the formation of industrial smog. The industrial smog forms a thick blanket of smog or haze nearly close to the ground.
Final answer:
Sulfur dioxide is a primary component of industrial smog and photochemical smog, but it does not directly influence thermal inversion. It is released into the atmosphere predominantly from burning fossil fuels.
Explanation:
Sulfur dioxide is a significant component in the creation of both industrial smog and photochemical smog, two serious urban air pollutants. During industrial activities, fossil fuels such as coal and oil that contain sulfur are burned, releasing sulfur dioxide into the atmosphere. This gas then reacts with water vapor and other compounds to form industrial smog. In the case of photochemical smog, when sulfur dioxide interacts with sunlight, volatile organic compounds, and nitrogen oxides, it contributes to the formation of this harmful type of smog. However, sulfur dioxide does not directly relate to the occurrence of thermal inversion, a weather-related phenomenon that can trap smog and other pollutants close to the ground.
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B. O – H
C. S – Cl
D. H – Cl
E. Cl – Cl
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Chloride, Cl2, has a non-polar covalent bond because both molecules making up the compound are identical. This results to a diatomic molecule, which are known non-polar molecules. Since both sides of the bond are also the same, there is equal sharing of electrons. Polar covalent bonds are those that have unequal sharing of electrons.
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When an uncharged pith ball is brought into the electrostatic field of a charged tod, the side of the pith ball closest to the negatively charged end of the rod will also gain a negatively charged surface. Then, it will not attract to the charged tod but rather it will repel.
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By definition, the correct answer is option D. Scientists can identify an element by looking at the structure of a single atom because the number of protons can be determined, and thus its identity.
All atoms are composed of a central nucleus in which there are particles with a positive electric charge, the protons, and neutron, which is an electrically neutral subatomic particle, around which other particles with a negative electric charge that are electrons move.
Thus, the atom is electrically neutral, since the positive charge of the protons is compensated by the negative charge of the electrons.
Atoms of different elements have different amounts of protons. The atomic number (which is identified by the letter Z) indicates the amount of protons that is present in the nucleus of an atom.
This number is then responsible for defining the electronic configuration of the atom and the chemical properties of the element. Then it is possible to say that the number of protons in the nucleus, that is to say the atomic number Z, of an atom determines its identity.
Finally, the correct answer is option D. Scientists can identify an element by looking at the structure of a single atom because the number of protons can be determined, and thus its identity.
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Explanation:
It is known that number of moles equal mass divided by molar mass.
Mathematically, Number of moles =
Since, it is given that mass is 22 grams and molar mass of argon is 40 g/mol.
Therefore, Number of moles =
=
= 0.55 mol
Thus, we can conclude that there are 0.55 moles in 22 grams of argon.
number of moles can be calculated as follows;
number of moles = mass present / molar mass of element
molar mass of Ar - 40 g/mol
number of moles of Ar = 22 g / 40 g/mol = 0.55 mol .
there are 0.55 mol of Ar