Water has a higher boiling point than expected because A. there is so much water vapor in the atmosphere. B. water molecules are not very massive. C. hydrogen and oxygen form single covalent bonds. D. of the strong attractions between polar water molecules
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Final answer:
Water has a higher boiling point than expected because D. of the strong attraction between polar water molecules.
Explanation:
The higher boiling point of water is due to the strong attraction between polar water molecules. Water molecules are polar because of the unequal distribution of electron density between the oxygen and hydrogen atoms, resulting in a slightly positive charge on the hydrogen atoms and a slightly negative charge on the oxygen atom.
Thus, these partial charges create attractive forces called hydrogen bonds between neighboring water molecules, making it difficult to separate the molecules and requiring more heat energy to overcome these attractive forces and reach the boiling point.
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if your serious about this question then it is 5
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The material you should use in the windshield washer container is a special windshield washing solution.
Using the wrong material in the windshield washer container can cause damage to the windshield and the washer system itself. A special windshield washing solution is specifically designed to clean the windshield effectively and safely, without leaving streaks or residue.
There are several types of special windshield washing solutions available in the market, each with its own set of benefits and features. Some of the most common types include:
1. Deionized water: This type of solution is distilled and purified to remove impurities and minerals that can leave streaks on the windshield. Deionized water is gentle on the windshield and the washer system, and it is effective in removing dirt and grime.
2. Isopropyl alcohol: This type of solution is a mixture of isopropyl alcohol and water. It is effective in removing dirt and grime, and it also helps to dry the windshield quickly. However, it can be too harsh on some types of windshields, so it is important to use it with caution.
3. Glycerin-based solution: This type of solution is made with glycerin, which is a natural humectant that helps to prevent the windshield from drying out. It is also effective in removing dirt and grime, and it leaves the windshield streak-free.
When choosing a special windshield washing solution, it is important to consider the type of windshield you have, as well as the climate and weather conditions in your area. For example, if you live in an area with high humidity, a glycerin-based solution may be the best choice, as it helps to prevent the windshield from fogging up.
It is also important to note that some special windshield washing solutions may not be compatible with certain types of windshields, such as those made of polycarbonate or acrylic. It is always a good idea to consult the manufacturer's instructions before using any solution in your windshield washer container.
In summary, the material you should use in the windshield washer container is a special windshield washing solution that is specifically designed for the type of windshield you have and the climate and weather conditions in your area. It is important to choose a solution that is gentle on the windshield and the washer system, and that is effective in removing dirt and grime.
a. iron.,B.nickel.,C.Cooper.,D.lead.
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Answer:
Copper
Explanation:
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The name of the given chemical compound is called sodium sulfite.
Chemical is a term used to describe any substance that has a definite chemical composition.
The chemical name of is derived from the elements that make up the compound. Na stands for sodium, S stands for sulfur, and O stands for oxygen. The subscript 3 indicates that there are three oxygen atoms in the compound.
Therefore, the chemical is called sodium sulfite. It is an inorganic compound that is used in various chemical processes, as a preservative in the food industry, and in the production of paper.
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Answer: A carbon-zinc battery, often referred to as a standard zinc-carbon battery or just zinc-carbon battery, is a type of primary cell that has been popular for many years due to its simplicity and low cost. Here's a basic outline of the typical structure of a carbon-zinc battery:
Explanation:
Outer Casing (Container):
Typically made of zinc, which also serves as the anode of the battery.
The casing can be cylindrical for standard AA, AAA, C, D cells, or can be rectangular for 9V batteries and other shapes.
Anode (Zinc Container):
The zinc container itself acts as the anode.
When the battery is discharged, the zinc anode oxidizes to form zinc chloride.
Cathode:
Consists of a mix of carbon (often in the form of graphite) and manganese dioxide (MnO₂).
The central carbon rod, typically referred to as the "current collector", is surrounded by the manganese dioxide mixture.
The carbon rod helps channel electrons from the cathode to the external circuit.
Electrolyte:
A paste made up of ammonium chloride (NH₄Cl) or zinc chloride (ZnCl₂) in water.
This paste facilitates the flow of ions inside the battery, completing the internal circuit.
Separator:
Positioned between the anode and the cathode, it prevents them from directly contacting each other, which would result in a short circuit.
It allows the movement of ions and thereby plays an essential role in the battery's electrochemical process.
Cap and Seal:
The top cap is usually made of brass or another conductive material and serves as the battery's positive terminal.
A seal is used to ensure the electrolyte and other components are kept inside, and to prevent external contaminants from entering the battery.
This battery type, while inexpensive, tends to have a shorter life and lower energy density compared to other primary cell types like alkaline batteries. Furthermore, carbon-zinc batteries are more prone to leakage than their alkaline counterparts.
Final answer:
A carbon-zinc battery consists of three main parts: a zinc anode which undergoes oxidation, a carbon cathode which aids reduction, and an electrolyte of ammonium or zinc chloride which transfers ions.
Explanation:
A typical carbon-zinc battery, also known as a Leclanché cell, consists mainly of three components: a zinc anode (the negative terminal), a carbon rod as the cathode (the positive terminal), and an electrolyte composed of ammonium chloride or zinc chloride.
The zinc anode is the zinc can that makes up the body of the battery. When the battery is in use, oxidation occurs at the anode, with zinc losing electrons to form zinc ions.
The carbon rod, which is usually surrounded by a mixture of manganese dioxide and carbon black, acts as the cathode. It facilitates the reduction reaction when the battery is in use.
The electrolyte, typically a paste of ammonium or zinc chloride, serves as a means for the transfer of ions between the anode and cathode.
Therefore, the traditional structure of a carbon-zinc battery consists of a zinc can acting as the anode, a carbon cathode surrounded by a mixture of manganese dioxide and carbon black, and an electrolyte paste in between.
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A. Camshaft gear backlash is being checked
B. Camshaft is being aligned
C. Engine is being timed
D. Camshaft is being removed