Give the approximate temperature at which creep deformation becomes an important consideration for each of the following metals: tin, molybdenum, iron, gold, zinc, and chromium.

Answer:

I have no clue sorry

Explanation:

good luck

Answer:

CH³–C=CH——CH³–CH=CH²

Explanation:

THIS IS PROPYNE TO PROPENE

Answer:

because battery have it's own voltage in it's composition

Answer:

They can't be in all avobe of this beacuse they may be homogeneous , colorless , heterogeneous and may be odorless .

So they cant be any one.

By :- Utsav Xettri

Answer:

A it was so hard to answer

Amitriptyline is a tricyclic antidepressant medication that is primarily used to treat depression. It belongs to a class of drugs known as tricyclic antidepressants (TCAs). Amitriptyline works by increasing the levels of certain neurotransmitters in the brain, such as serotonin and norepinephrine, which helps to improve mood and relieve symptoms of depression. The correct answer is a. True.

The statement is true. Amitriptyline is an antidepressant that belongs to the class of tricyclic antidepressants (TCAs). It works by inhibiting the reuptake of norepinephrine and serotonin from the synaptic cleft, thereby increasing the levels of these neurotransmitters in the brain. By preventing the reuptake, amitriptyline enhances its effects and helps alleviate symptoms of depression. This mechanism of action distinguishes TCAs from other types of antidepressants, such as selective serotonin reuptake inhibitors (SSRIs) that primarily target serotonin reuptake.

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Answer:

I hope it's helpful for you...

Explanation:

water traps heat and holds it deep inside the ocean .....

I think it's correct answer

In an ecosystem, water  traps heat and holds it deep inside the ocean there by heating earth.

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

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Answer:

Molar mass is 325.33

Explanation:

Molar mass is 325.33

When a radioactive source is in front of a plate of aluminum foil. On the opposite side, radiation of two different sorts is found. There won't be any indication of the alpha particle radiation.

A known volume of a radionuclide that emits ionizing radiation—typically gamma radiation, alpha particles, beta particles, including neutron radiation—is referred to as a radioactive source.

The NHS, paper and steel manufacture, food irradiation, medical sterilization, the construction industry, and oil and gas exploration are just a few of the businesses that heavily utilize radioactive sources.

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Answer:

d

Explanation:

the answer is d is that correct

Answer:

The astenosphere is located below the lithosphere

The mantle is composed of silicate material

Explanation:

The Earth has several different layers, and they can be presented in two different manners, depending on their chemical composition and their physical properties. According to the chemical composition the Earth has three layers, crust, mantle, and core, while in accordance to the physical properties it has five, lithosphere, astenosphere, mesosphere, outer core, and inner core.

The astenosphere is the second layer from the top, and it lies just below the lithosphere. It is also the upper part of the mantle. The mantle is a layer that is largely composed of silicate material, mostly silicate molten rock. It can easily be seen from the volcanic activities that this layer is composed of silicate material because the magma is rich in it, and the magma comes from this layer.

The approximate balance in the account at the end of 6 years is $159,074. Rounded to the nearest dollar, it is $159,074.

Assuming that the annual rate of $20,000 is deposited at the beginning of each year, the total amount deposited over 6 years would be $120,000. With continuous compounding at 5% interest rate, the formula to calculate the balance in the account after 6 years is:
A = Pe^(rt)
Where A is the balance, P is the principal (amount deposited), e is the mathematical constant approximately equal to 2.71828, r is the interest rate in decimal form, and t is the time in years.
Plugging in the values, we get:
A = $120,000e^(0.05*6)
A = $159,073.51
Therefore, the approximate balance in the account at the end of 6 years is $159,074. Rounded to the nearest dollar, it is $159,074.

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Compounds (1) and (7) dissolve in water to give ions, (2) and (5) give molecules, (3) and (6) give molecules only, and (4) gives both ions and molecules. 8. AC, 9. AE, 10. AD, 11. AB, 12. ADE, 13. B, 14. B.

1. (C) ions

2. (C) ions

3. (B) both

4. (C) ions

5. (B) both

6. (A) molecules

7. (C) ions

8. (A) white

9. (A) white

10. (B) clear

11. (E) none of the above

12. (E) none of the above

13. (D) green

14. (A) white

At the point when a compound disintegrates in water and separates into particles, it is called an electrolyte. NaCl, Hello, and solid electrolyte are instances of mixtures that separate in water to give particles.

At the point when a compound breaks down in water yet doesn't separate into particles, it is known as a nonelectrolyte. Ethanol is an illustration of a nonelectrolyte. At the point when a compound breaks up in water and just somewhat separates into particles, it is known as a powerless electrolyte.

Ni(NO3)2(aq), AgNO3(aq), (NH4)2S(aq), Mg2+(aq), and FeO(aq) all disintegrate in water to give particles, while Mg(s) doesn't break down in water.

While coordinating the given tones with the right blend, white relates to green, clear compares to nothing from what was just mentioned, red has no match, green relates to blue, and pink relates to fuchsia.

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Answer:

car

Explanation:

Cars have hydraulic brake circuit that operates a car's brake's on four wheels.

Answer:

barbers chair

Explanation:

The hydrated ions are free to move around when ionic salts dissociate in aqueous solutions. Their movement, however, is random, and there is no charge.

After separating a solid substance into its ions, the ions are ready for reactions. When a compound is solid, the ions are held together by electrostatic attractions. To allow ions to move freely, it must first be dissolved in solution. Consider the reaction between sodium chloride and silver nitrate. Both of these compounds are commonly available in solid form. First, you would dissolve both solids in a solution, in this case water. (See Equations 1 and 2)

Once the solid has dissolved and separated into its ions in solution, these ions are ready to react in the chemical reaction (Equation 3).

Keep in mind that the AgNO3(aq) and NaCl(aq) reactants demonstrate that the ions are in solution. In other words, AgNO3(aq) is the same as Ag+(aq)+NO3(aq), and NaCl(aq) is the same as Na+(aq)+Cl (aq). The equation in Equation 3 represents a double displacement reaction, which means that cations in the reactants exchange anions to form the products. A precipitate is formed in the laboratory that we identify as silver chloride.

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Molar mass is greater in CuSO45H2O(s). Pentahydrate copper salt has a higher molar entropy because there are more energy microstates present.

The atomic radius and molar mass grow as one moves down the group, bringing the energy levels closer together as a result. As a result, as one moves down the group, both the number of energy microstates and the molar entropy rise. A substance's entropy rises as its molecular weight, complexity, and temperature rise. As the pressure or concentration decreases, the entropy likewise rises. Gas entropies are significantly higher than those of condensed phases. Compared to solids or liquids, gases have higher entropies because of their chaotic mobility. That implies that entropy will alter during a reaction in which the quantity of gas molecules present changes.

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Answer:

Gravitational potential energy depends on an object's weight and its height above the ground (GPE = weight x height).Explanation:

Answer:

a chemical compound

Explanation:

copper(ii) chlorate is a chemical compound of the transition metal copper and the chlorate anion with basic formula cu(cio)3 and 2

O.1M of NaCl solution will have a higher freezing point depression because it contains more particles.

Freezing point depression is the difference in the freezing points of the solution from the pure solvent.

It can be said that for any solute added to a solvent; the freezing point of the solution will be lower than the freezing point of the pure solvent (without the solute).

The freezing point depression due to the presence of a solute is also a colligative property i.e. the amount of change in the freezing point is related to the number of particles of solute in a solution.

Therefore, 0.1M of NaCl solution will have a higher freezing point depression.

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Answer:

D. Carbon

Explanation:

Graphite, archaically referred to as plumbago, is a crystalline form of the element carbon with its atoms arranged in a hexagonal structure. You'll get the substance when carbon is stacked in sheets. It occurs naturally in this form and is the most stable form of carbon under standard conditions. Under high pressures and temperatures, it converts to diamond. Graphite is used in pencils and lubricants. It is a good conductor of heat and electricity. Its high conductivity makes it useful in electronic products such as electrodes, batteries, and solar panels.

Since the bell weighs 190 N and is 45 m high, the bell’s potential energy is 8550 J

To answer the question, we need to know what potential energy is.

This is energy due to position. It is given by PE = mgh where

Also, W = mg = weight of object.

So, PE = Wh

Now, given that the bells weight 190 N and is 45 m high,

So, PE = Wh

= 190 N × 45 m

= 8550 Nm

= 8550 J

So, the bell’s potential energy is 8550 J

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Taking into account the reaction stoichiometry, a amount of 5.4 moles of oxygen are necessary to react completely with 7.2 moles of hydrogen.

In first place, the balanced reaction is:

C₃H₈ + 3 O₂  → 3 CO₂ + 4 H₂

By reaction stoichiometry, the following amounts of moles of each compound participate in the reaction:

The following rule of three is used: If by reaction stoichiometry 4 moles of H₂ are produced by 3 moles of O₂, 7.2 moles of H₂ are produced by how many moles of O₂?

moles of O₂= (7.2 moles of H₂×3 moles of O₂)÷ 4 moles of H₂

moles of O₂= 5.4 moles

Finally, 5.4 moles of oxygen are required.

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Answer: Bismuth (Bi) , Nitrogen family

Explanation:

As the element has 5 valence electrons in the sixth energy level, which mens it belongs to 6th period as the valence electron has entered the 6th energy level.

Now as the electrons are  filled according to afbau's rule , the electronic configuration of the element will be :

\([Xe]4f^{14}5d^{10}6s^26p^3\)

Now as the atomic number of element is equal to the number of electrons in a neutral atom , the atomic number is 83 and the element is Bismuth (Bi). As the last electron enters p -subshell , it is  a p block element. It lies in group 15 which is nitrogen family.

Answer:

665

Explanatio

Answer:

$665

Explanation:

5 hours per week × $7 per hour = $35 per week

$35 per week × 19 weeks = $665

Answer:

125 divided by 2 = about 62.5

62.5 mph

Explanation:

Answer: 1- gas 2- solid

Explanation:

The energy released when one mole of helium-4 is produced in the reaction H + H → He + H⁺ + n is approximately -3.598 × 10⁻¹² Joules per mole.

The reaction of producing one mole of helium-4 (He) from a hydrogen atom (H) and a hydrogen ion (H⁺) with the release of a neutron (n) can be represented as:

H + H → He + H⁺ + n

The energy released or absorbed in this reaction can be calculated using the mass defect method.

The mass of one mole of helium-4 (He) is approximately 4.0026 g/mol, and the mass of one mole of a hydrogen atom (H) and a hydrogen ion (H⁺) is approximately 1.0078 g/mol each. The mass of a neutron (n) is approximately 1.0087 g/mol.

Using these values, we can calculate the energy released or absorbed:

Mass of reactants = 2 × (1.0078 g/mol) = 2.0156 g/mol

Mass of products = 4.0026 g/mol + 1.0078 g/mol + 1.0087 g/mol = 6.0191 g/mol

Mass defect = Mass of reactants - Mass of products = 2.0156 g/mol - 6.0191 g/mol = -4.0035 g/mol

Energy released or absorbed (E) = Mass defect × (c²)

E = -4.0035 g/mol × (2.998 × 10⁸ m/s)²

E ≈ -3.598 × 10⁻¹² J/mol

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The 2-Methyl-1-propene is the most stable compound This is true because it has more substituents (alkyl groups) attached to the double bond, which increases its stability due to the electron-donating effect of the alkyl groups. This makes sp2 hybridized carbon atoms more electronegative.

The 1-Butene is the least stable compound This is true because it has fewer substituents attached to the double bond compared to 2-Methyl-1-propene, making it less stable. The more carbon atoms attached to the double bond, the more stable the alkene This statement is true as well. Alkenes with more carbon atoms attached to the double bond have increased stability due to the electron-donating effect of the alkyl groups. A trans isomer is less stable than a cis isomer due to more steric hindrance: This statement is false. In general, trans isomers are more stable than cis isomers because they have fewer steric hindrances and lower energy conformations. sp2 hybridized carbon atoms are more electronegative than sp3 hybridized atoms: This statement is true. sp2 hybridized carbon atoms have a greater proportion of "s" character (33% s-character and 67% p-character) than sp3 hybridized carbon atoms (25% s-character and 75% p-character). This makes sp2 hybridized carbon atoms more electronegative.

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Answer:

1.Formation of Gas

2.Color Change

3.

Formation of a precipitate

4.Energy Change

Explanation:

Here are four signs that a chemical change has occurred:

1. Formation of a gas: If a gas is formed during a reaction, it indicates a chemical change. For example, if you mix baking soda and vinegar, carbon dioxide gas is produced.

2. Color change: If the color of the substances changes, it is often a sign that a chemical change has occurred. For example, when iron rusts, it changes from a silver color to a reddish-brown color.

3. Formation of a precipitate: A precipitate is a solid that forms from a solution during a chemical reaction. If a precipitate forms, it indicates that a chemical change has occurred. For example, when you mix silver nitrate and sodium chloride, silver chloride precipitates out of the solution.

4. Energy change: If energy is absorbed or released during a reaction, it is a sign that a chemical change has occurred. For example, when you burn a piece of paper, it releases energy in the form of heat and light.

Carbon dioxide remains in the atmosphere and warms our planet by trapping heat (illustrates the greenhouse effect).

1. The greenhouse effect occurs when certain gases, including carbon dioxide, trap heat in the Earth's atmosphere, leading to global warming.

2. Polar ice cores contain air pockets that provide information about past atmospheric conditions, allowing scientists to understand and measure changes over thousands of years.

3. Carbon dioxide (CO2) is one of the primary greenhouse gases targeted when studying the warming effects of human activities on the climate.

4. Melting ice attached to continental land masses, such as glaciers in Antarctica, contributes to subsidence, increased ocean temperatures, and rising sea levels.

5. Deforestation reduces the number of trees available for photosynthesis, leading to a decrease in photosynthetic output and carbon fixation to sugar. This results in increased levels of carbon dioxide in the atmosphere, contributing to climate change.

6. Fracking is a process used to extract natural gas from fissure cracks in rocks. It has been associated with increased seismic activity, water contamination, and involves techniques such as directional drilling and the use of solvents, water, and sand.

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