Properties that make titanium useful for tennis rackets and wheelchairs
Answers
Answer:
light-weightiness, durability
Explanation:
Titanium is chemical element with symbol Ti and the atomic number of the element is 22.
Titanium is a transition metal with silver lusture. It possess low density, and high strength and also high tensile strength. Titanium is also resistant to corrosion in sea water.
Titanium is used in many sporting goods like tennis rackets, hockey, etc. Wheelchairs and the tennis rackets are better when they are lightweight, without being detracting from their quality.
Related Questions
Over-encouraging lesser skilled players can lead to embarrassment.a. Trueb. False
When comparing bromine to chlorine, bromine hasA. Fewer protons in its nucleus.B. A weaker effective nuclear chargeC. More valence electronsD. More electron shielding
Which of the following statements explains the difference between a lease and a loan?a. At the end of a loan the car belongs to you, but at the end of a lease, the car still belongs to thelease companyb. At the end of a loan, the car still belongs to the lease company, but at the end of a lease the carbelongs to you.c. A loan requires a large down payment at the beginning while a lease does not.d. A lease requires a large down payment at the beginning while a loan does not.Please select the best answer from the choices provided
A saturated solution of NaNO3 is prepared at 60.°C using 100. grams of water. As this solution is cooled to 10.°C, NaNO3 precipitates (settles)out of the solution. The resulting solution is saturated. Approximately how many grams of NaNO3 settled out of the original solution?(1) 46 g (3) 85 g(2) 61 g (4) 126 g
A Energy to break bonds is more than energy release to form bonds
B Energy to break bonds is less than energy release to form bonds
Which type of reaction is represented by B?
Endothermic reaction
Exothermic reaction
Reaction between liquids
Reaction between solids
Answers
Answer:
Reaction B is exothermic
Explanation:
From the context of thermodynamics, chemical reactions can be broadly classified as endothermic and exothermic reactions.
Endothermic reactions involve absorption of energy and show a positive value for the reaction enthalpy i.e. ΔH is positive. In contrast, exothermic reactions are accompanied by the release of energy and show a negative value for the enthalpy change i.e. ΔH is negative.
In a given chemical reaction energy is required to break bonds and it is released during the formation of new bonds.
The Reaction B is such that, the energy required to break bonds is less than energy released during formation bonds. Therefore, since there is a net release of energy, the reaction is exothermic.
Exothermic Reactions
As reactants form products, the potential energy increases.
Thermal energy is transferred from the product to the reacting substances.
Thermal energy is transferred from the surroundings to the reacting substances.
Answers
Answer is: As reactants form products, the potential energy decreases.
There are two types of reaction:
1) Endothermic reaction (chemical reaction that absorbs more energy than it releases).
2) Exothermic reaction (chemical reaction that releases more energy than it absorbs).
For example, balanced chemical reaction:
C₂H₅OH + 3O₂ → 2CO₂ + 3H₂O ΔrH= -1370 kJ/mol.
This reaction is exothermic reaction (heat is released), so products have less potential energy and energy is transerred to surroundings.
Considering the definition of exothermic reaction, as reactants form products, the potential energy decreases (first option).
Exothermic reaction
Energy is the ability to do work or to produce heat.
Chemical reactions involve a rearrangement of atoms between substances with the breaking or formation of chemical bonds. In general, this formation or breaking of chemical bonds is accompanied by changes in the energy of the system.
In exothermic reactions, energy is released when they occur (usually this energy is released in form of heat), so the reaction system temperature increases.
In a chemical reaction, the reactants are the compounds that are transformed and give rise to the products. Reactants and products have stored potential energy. In an exothermic reaction, the reactants have more potential energy compared to the products, so the excess energy is released as heat, thus complying with the law of conservation of energy, which says that energy is not lost. gain or loss, so the energy of the reactants must be equal to that of the products.
Summary
In summary, considering the definition of exothermic reaction, as reactants form products, the potential energy decreases (first option).
Learn more about exothermic reactions:
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Answers
H = 1.00794
Cl= 35.453
HCl :
1.00794 + 35.453 = 36.46094 g/mol
hope this helps!
Answers
Final answer:
Red blood cells are primarily formed in the bone marrow, specifically the red bone marrow. The process of producing these cells, known as hematopoiesis, begins at the embryonic stage and continues throughout a person's life, with adult hematopoiesis being largely restricted to certain bones in the body. New red blood cells are continuously produced due to their relatively short lifespan.
Explanation:
Red blood cells are formed in the bone marrow, specifically in the red bone marrow which is a loose collection of cells where hematopoiesis or the production of blood cells occurs. This crucial process of forming blood cells, including red blood cells, is introduced in the embryonic stage in the yolk sac. However, as the embryo develops, this function is taken over by the spleen, liver, and lymph nodes, with the bone marrow eventually assuming most hematopoietic functions. The red blood cells, along with white blood cells and platelets, are all produced in the red bone marrow.
In children, this process can occur in the cavity of long bones, but in adults, it is largely restricted to certain bones such as the cranial and pelvic bones, the vertebrae, the sternum, and parts of the femur and humerus. The lifespan of these cells is relatively brief, so new ones must be continuously produced to maintain healthy bodily functions.
Learn more about Formation of Red Blood Cells here:
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Answers
Answer:
ACETYL-CoA, FADH
2 NADH
acetyl-CoA
Explanation: Beta oxidation of carbons of fatty acid acid molecules leads to the formation Acetyl-CoA, FADH and NADH.
The overall reaction for the process
Cn-acyl-CoA + FAD + NAD+
+ H
2O + CoA → Cn-2-acyl-CoA + FADH
2 + NADH + H+
+ acetyl-CoA.
formula of NADH is C21H27N7O14P2
formula of FADH is C27H35N9O15P2.
Both NADH(Nicotinamide adenine dinucleotide) and FADH( Flavin adenine dinucleotide) are
formular for Acetyl CoA IS C23H38N7O17P3S.
Beta oxidation is a breakdown process taking place in living systems which catabolises the fatty acids through glycolysis or fermentation leading to the release of Acetyl CoA, NADH AND FADH2.
Answers
Answer:
We do not have - the amount of substance.
The molecular weight () of Bromine is 80.