How much taller does the eiffel tower become at the end of a day when the temperature has increased by 17 degrees c. its original height is 321 m and you can assume it is made of steel.

Answer:

displacement is 0m distance is 40m

Explanation:

20-20 vs. 20+20

If you walked 20 m, took a book from a table, and walked back to your seat, The distance you traveled is 40 meters, and your displacement is 0 meters.

You walked 20 meters. This means you physically moved a distance of 20 meters away from your seat. You took a book from a table. This action does not affect your distance or displacement. It is simply a task you performed during your journey.

You walked back to your seat. By returning to your seat, you negated the initial displacement and arrived back at your starting point. As a result, your displacement is 0 meters because there is no overall change in your position.

Distance is a scalar quantity that represents the total length of the path traveled, regardless of the direction. In this case, since you traveled 20 meters away from your seat and then returned, the total distance traveled is 40 meters (20 meters + 20 meters).

Displacement, on the other hand, is a vector quantity that represents the change in position from the starting point to the ending point. Since your starting point and ending point are the same (your seat), the displacement is 0 meters. Therefore, the distance you traveled is 40 meters, and your displacement is 0 meters.

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Answer:

N2O3

Explanation:

The empirical formula of a compound can be calculated as follows:

N = 36.86% = 36.86g

O = 63.14% = 63.14g

First, we divide each value by its molar mass as follows:

N = 36.86g ÷ 14g/mol = 2.63mol

O = 63.14g ÷ 16g/mol = 3.95mol

Next, we divide by the smallest mole value;

N = 2.63mol = 2.63 = 1

O = 3.95mol ÷ 2.63 = 1.5

We multiply each value by 2 to get an approximate whole number ratio i.e. N = 2, O = 3

Answer:

isobars

Explanation:

How?

So they are isobars

Answer:

In fact, in many neurons three sodium ions are transported for every potassium ion; sometimes the ratio is three sodium ions for every two potassium ions, and in a few neurons it is two sodium ions for one potassium ion.

Answer:

can't do much

Explanation:

baking soda;8,alkaline

bleach:12,alkaline.

coffee:5.10,acidic

coke;coke,acidic

milk;6.9,acidic.

lemon juice;2,acidic

this is all i can do.

An extremely efficient enzyme has a small KM and a large kcat.

The conversion rate at the lowest substrate concentration is measured in kcat/km. This interpretation is accurate. kcat/Km is a good indicator of an enzyme's effectiveness since it takes into account both the enzyme's maximum rate, kcat, and its affinity for its substrate (Km).The turnover number, or the number of molecules that may be created per second per active site, of an enzyme is provided by the formula k c a t / kM.Because the substrate concentration is almost usually much greater than the Km, in many situations, enzymes are only better when they have a larger kcat. It seems disingenuous to me to use the ratio when this is plainly the case, yet it still happens much too frequently. It could serve as a useful benchmark when compared to enzymes in particular situations.

complete question:An extremely efficient enzyme has a _____ KM and a _____ kcat.

A) small; small

B) small; large

C) large; large

D) large; small

E) kcat and KM do nothing to predict the efficiency of an enzyme

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Answer:

False

Explanation:

Heat rises, but cold air doesn't. Cold air is heavier than warm air is.

To achieve the final pH, you need to add 13.3 mL of a 6.0 M HCl solution to the 800.0 mL of a 0.10 M NaAc solution.


1. Calculate the moles of NaAc in the solution
2. Use the Henderson-Hasselbalch equation to find the moles of HCl needed
3. Calculate the volume of the 6.0 M HCl solution needed


1. Moles of NaAc: M = n/V => n = M * V => n = 0.10 mol/L * 0.800 L = 0.080 mol
2. Henderson-Hasselbalch equation: pH = pKa + log([A-]/[HA]).

Sodium acetate (NaAc) is the conjugate base of acetic acid, and the pKa of acetic acid is 4.76. We need to find the ratio of [A-]/[HA] that gives the desired pH, assuming the final pH equals the pKa (4.76) because it is the optimal buffering capacity: 4.76 = 4.76 + log([A-]/[HA]) => log([A-]/[HA]) = 0 => [A-]/[HA] = 1. This means that we need an equal amount of moles of HCl (which will convert NaAc to its conjugate acid, HA) to achieve the desired pH: 0.080 mol HCl.
3. Volume of 6.0 M HCl solution: M = n/V => V = n/M => V = 0.080 mol / 6.0 mol/L = 0.0133 L or 13.3 mL

Summary:
To achieve the final pH, you need to add 13.3 mL of a 6.0 M HCl solution to the 800.0 mL of a 0.10 M NaAc solution.

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In addition to purposeful ventilation, air must inevitably enter a building through the process known as "air infiltration."

Thus, This is the unplanned or accidental entry of air into a space through openings and fissures in the building envelope. Exfiltration is the phrase used to describe the equivalent loss of air from a confined space.

The porosity of the building shell and the strength of the wind and temperature's natural driving forces both affect how much air penetration occurs.

When the pressures acting across such openings are governed by weather conditions rather than purposefully (like mechanically) created driving forces, vents and other apertures built into a building as part of the ventilation design can also become paths for unintended air movement.

Thus, In addition to purposeful ventilation, air must inevitably enter a building through the process known as "air infiltration."

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D) Ca3(PO4)2 is the compound that is acid-insoluble.

What is Compound?

A compound is a substance formed when two or more chemical elements are chemically bonded together in a fixed proportion by mass. The elements that make up a compound are always present in a specific ratio and are held together by chemical bonds, such as covalent bonds or ionic bonds. Compounds can be formed through chemical reactions between different elements, such as the reaction between hydrogen and oxygen to form water.

Acid-insoluble compounds are those that do not dissolve in acid. This is usually a result of their chemical properties, such as having strong covalent bonds or being highly stable. In the given options, the compound that is acid-insoluble is Ca3(PO4)2, or calcium phosphate.

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In order to separate oil and water, there are many options to do so, you could use their differences in boiling point, and also their differences in density, and this last one is considered to be the best way to separate oil from water, since water is denser than oil, they will form two distinct layers in a container, and they can easily be separated. This method can also be called decantation. Letter C. But it is important to have in mind, it is NOT the only possible method.

Myosin drives muscle contraction, insulin regulates blood sugar, hemoglobin transports oxygen, and collagen supports tissues. These proteins are vital for physiological functions in the body.

Of the molecules listed, three are proteins, while one is a fibrous structural protein:

1. Myosin: Myosin is a motor protein that plays a crucial role in muscle contraction and movement. It is responsible for the sliding of muscle fibers and the generation of force in muscle cells.

2. Insulin: Insulin is a peptide hormone that regulates blood sugar levels. It is produced by the pancreas and helps to control glucose uptake by cells, promoting its storage as glycogen in the liver and muscles, and regulating protein and fat metabolism.

3. Hemoglobin: Hemoglobin is a protein found in red blood cells that is responsible for transporting oxygen from the lungs to the tissues throughout the body. It binds to oxygen in the lungs and releases it in areas with lower oxygen concentrations.

4. Collagen: Collagen is a fibrous protein that provides structural support to various tissues, including the skin, tendons, ligaments, and bones. It contributes to the strength, elasticity, and integrity of these tissues.

These proteins play important roles in various physiological processes, contributing to muscle function, metabolic regulation, oxygen transport, and tissue structure.

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Complete question :

Identify the proteins in the following list of molecules.

1. Myosin

2. Insulin

3. Hemoglobin

4. Collagen

Proteins are biological molecules made of chains of amino acids. They perform many functions in organisms as determined by their amino acid composition. There are various types of proteins with diverse roles, and methods such as proteomic analysis are used to study them.

Proteins are large biological molecules comprised of long chains of smaller molecules known as amino acids. These proteins perform a plethora of functions within organisms, from transporting molecules across cell membranes to replicating DNA and catalyzing metabolic reactions. The specific functionality and properties of proteins are determined by the combination of amino acids that compose them.

There are several types of proteins which include but are not limited to structural proteins, regulatory proteins, contractile proteins, protective proteins, transport proteins, storage proteins and enzymes. Some integral proteins also serve dual roles as both a receptor and an ion channel. For example, on nerve cells, there are receptors that bind neurotransmitters like dopamine which leads to a chemical reaction within the cell.

Proteomic analysis techniques like  mass spectrometry and X-ray crystallography are often used to study, identify, and analyze the characteristics and structure of a protein.

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Answer:

the outer core is important because the outer core is responsible for earth's magnetic field which protects earth from harmful particles that comes from sun and also contains some natural metal like nikle and iron.

is this much paragraph enough comment down below..

hope this helps you ☺️☺️

Answer:

110000

Explanation:

Multiply 2.75 by 4. is 11

Multiply 11 by 10000. is

110000

Answer:

0.6145M

Explanation:

Based on the chemical equation, 2 moles of MnO₄⁻ reacts with 5 moles of H₂C₂O₄.

To solve this problem, we need to find moles of MnO₄⁻, with the chemical equation the moles of H₂C₂O₄ and, the concentration of this solution.

Moles MnO₄⁻:

24.98mL = 0.02498L * (0.1968mol / L) = 4.916x10⁻³ moles MnO₄⁻

Moles H₂C₂O₄:

4.916x10⁻³ moles MnO₄⁻* (5 moles H₂C₂O₄ / 2 moles MnO₄⁻) =

0.01229 moles H₂C₂O₄

Molarity H₂C₂O₄:

0.01229 moles H₂C₂O₄ / 0.0200L =

Atom of hydrogen-2 has one proton, one neutron, and one electron.  Particles that identify the atom as hydrogen are :electron and proton.

There are three isotopes of hydrogen namely: protium (¹H), deuterium (²H) and tritium (³H).

Protium is the most abundant isotope, consisting of one electron, one proton and zero neutron.

Deuterium or hydrogen-2, consists of one electron, one proton and one neutron.  (D, or(²H) is the symbol for deuterium and is called heavy hydrogen.

Tritium is an isotope of hydrogen that consists of one proton, two neutrons, and one electron.  (³H) is the symbol for tritium and the atomic number of tritium is 1 and the atomic mass of tritium 3.

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Answer:

Climate?

Explanation:

A German scientist who proposed the theory of continental drift ... Land reptile fossil located on multiple continents; evidence of continental drift ... climate evidence. Tropical plant fossils found on an island in Arctic Ocean, and glacier deposits ... Lystrosaurus (fresh water reptiles) found in places now separated by oceans

The purpose of washing the solid product with ethanol is to purify it from some organic species.

This process is common in science and is characterized by the removal of impurities from a given sample through different types of methods and techniques.

In a chemical reaction which results in the formation of solid crystals, it is best to to purify it from some organic species by washing it with ethanol.

This helps to achieve an accurate result of the product derived through the absence of impurities and prevent further reactions from occurring which is therefore the most appropriate reason in this scenario.

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Answer

3.075 g Fe²⁺

Procedure

The formula of iron (II) sulfite is FeS, to get the grams of Fe²⁺ present, we need to determine the ratio of the elements that form the molecule.

Fe = 55.845 g/mol

S = 32.065 g/mol

FeS = 55.845 g/mol + 32.065 g/mol = 87.91 g/mol

Ratio Fe = 55.845/87.91= 0.6353

Ratio S= 32.065/89.91 = 0.3647

Grams of Fe²⁺ = 4.84 (0.6353) = 3.075 g Fe²⁺

Answer: It will be D which is number 4........

Neither type of light is likely to damage the material, because the material does not take in energy from either the X-ray light or the gamma ray light.

Explanation:

Answer: Once the sun's energy reaches earth, it is intercepted first by the atmosphere. A small part of the sun's energy is directly absorbed, particularly by certain gases such as ozone and water vapor. Some of the sun's energy is reflected back to space by clouds and the earth's surface.

The percent composition of salicylic acid is C7H6O3, or 60.87%C, 4.4%H, and 34.75%O

Silicon could be a possible basis for alien life due to its similarities to carbon in terms of its ability to form complex molecules and its capacity for bonding.

Silicon is often considered as a possible basis for alien life because it shares some chemical properties with carbon. Like carbon, silicon is located in the same group (Group 14) of the periodic table, which means it has similar valence electron configuration. This similarity suggests that silicon could potentially form diverse and complex molecules, just as carbon does in organic chemistry.

However, despite these similarities, silicon is not as "prolific" in its known molecules as carbon. This is primarily due to the difference in atomic size and electronegativity between carbon and silicon.

Carbon is smaller in size and has a higher electronegativity, allowing for more varied and stable bonding configurations. Silicon's larger size and lower electronegativity make it less versatile in forming stable bonds with other atoms.

In a different otherworldly environment, silicon-based molecules may have both advantages and disadvantages compared to carbon-based molecules. Silicon-based molecules could potentially withstand extreme conditions such as high temperatures or radiation, as silicon bonds are generally stronger than carbon bonds.

However, silicon-based molecules may also be less flexible and reactive than carbon-based molecules, which could limit their ability to perform the complex biochemical processes necessary for life.

Overall, while silicon presents some potential for alternative biochemistry, the current understanding of its chemical properties suggests that carbon remains a more favorable element for supporting the diverse and intricate chemistry required for life as we know it.

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A and B are correct. Crubbers are expensive flue gas desulfurization devices used to remove 90% or more of SO2 pollution from industrial emissions.

Crubbers are indeed flue gas desulfurization devices used as pollution control equipment to remove SO2 (sulfur dioxide) from industrial exhaust gases. They are designed to reduce SO2 emissions to levels that are 90 percent or more below baseline levels. The term "baseline levels" refers to the initial levels of SO2 emissions before the implementation of the flue gas desulfurization system.

Crubbers, or flue gas desulfurization systems, work by utilizing various chemical processes to react with and remove sulfur dioxide from the flue gas. This helps mitigate the harmful effects of SO2 emissions on the environment and human health. However, it's important to note that while rubbers are effective in reducing SO2 pollution, they can be expensive equipment to install and maintain due to their complex design and operation. Therefore, both options A and B, which state that clubbers are flue gas desulfurization devices and expensive equipment, are correct.

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Explanation:

C6H10

12(6) + 1(10)

= 72 + 10 = 82

The relative molecular  mass of the alkyne with 6 carbon atoms is 82 gram/mole.

Molecular  mass of a compound or a molecule is defined as the mass of the elements which are present in it.The molecular mass is considered to be a bulk quantity not a molecular quantity. It is often an average of the of the masses at many instances.

The molar mass and formula mass are used as synonym for the molar mass.It does not depend on the amount of substance which is present in the sample.It has units of gram/mole.

Molecular masses of an element are given as relative atomic masses while that of compounds is the sum of relative atomic masses which are present in the compound.Relative molecular masses are also calculated by the same method.

In case of an alkyne with formula C₆H₁₀ relative molecular mass is calculated as, 12×6 +1×10=82 g/mole.

Hence, the relative  molecular mass of an  alkyne with 6 carbon atoms is 82 g/mole.

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Answer:

rusting, cooking and burning wood

The initial magnitude and direction of the acceleration of an electron and a neutral carbon atom are to be calculated using the given information: they are initially 1.5×10^-6 m apart, and the polarizability of a carbon atom is α = 1.96×10^40 C⋅m/(N/C).
Additionally, the change in the initial acceleration of the electron is to be determined if the distance between the electron and carbon atom is doubled.

To calculate the initial magnitude and direction of the acceleration of the electron, we can use Coulomb's law, which states that the force between two charged particles is given by:

F = (1/4πε₀) * (q₁q₂/r²)

where F is the force, ε₀ is the permittivity of free space, q₁ and q₂ are the charges of the particles, and r is the distance between them.

We know that the electron is negatively charged and the carbon atom is neutral. Therefore, the electron experiences an attractive force towards the carbon atom.

Using Newton's second law, F = ma, we can calculate the acceleration of the electron.
For part 2, if the distance between the electron and carbon atom is doubled, the initial acceleration of the electron will decrease. We can determine the ratio of the magnitudes of the accelerations by dividing the initial acceleration when the distance is doubled by the initial acceleration at the original distance.

In conclusion, by applying Coulomb's law and Newton's second law, we can calculate the initial magnitude and direction of the electron's acceleration in the presence of a neutral carbon atom. Additionally, by comparing the accelerations at different distances, we can determine the change in the initial acceleration when the distance between the particles is doubled.

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The portion of the titration curve of a strong base with a strong acid is the same as the region before the endpoint is reached for a weak base titrated with a strong acid. The correct answer is Option C.

Titration refers to the process of measuring the volume of one solution required to react with a given volume of another solution completely. The titration curve is a graph that shows the change in pH during a titration.

The pH changes quickly from acidic to basic as the volume of strong base added approaches the stoichiometric point. It can be observed that the pH of the strong base solution is high, but as it is titrated with an acid, its pH decreases. The graph gradually falls as the acid is added, finally reaching a sharp rise known as the equivalence point or endpoint. As a result, the correct option is c. the portion before the endpoint is reached.

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