A long glass tube, sealed at one end, has an inner diameter of 10.0 mm. The tube is filled with water and inverted into a pail of water. If the atmospheric pressure is 755 mmHg, how high (in mmH₂O) is the column of water in the tube (d of Hg = 13.5' g/mL ; d of H₂O = 1.00' g/mL).

Polysaccharide is a type of carbohydrate (such as glycogen, cellulose, or starch) whose molecules are made up of many sugar molecules bound together.

What purpose does the polysaccharide serve?

In general, polysaccharides serve one of two purposes: they either store energy or sustain structural integrity. Highly compact polymers like starch and glycogen are employed to store energy. In plants and animals, cellulose and chitin, two linear polymers, provide structural support.

What is plant polysaccharide?

More than half of the carbs we consume come from starch, which is the most significant source of carbohydrates in the human diet. Granules of it can be found in plants. Amylose and amylopectin, two polymers, are combined to form starch. 10%–30% amylose and 70%–90% amylopectin make up natural starches.

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The limiting reactant is H₂ because it has a lower yield. The correct option is A.

Limiting reactants in a reaction are the reactants that are used up in a given reaction in the presence of excess reactants.

Limiting reactants determine the amount of a product that can be formed in a reaction.

Limiting reactants result in the formation of the smallest amount of a product in a reaction.

Considering the given equation of reaction:

N₂ + 3 H₂ → 2 NH₃

The mole ratio of the reactants in the reaction is 1 : 3 for nitrogen and hydrogen.

10.1 g N₂ produces 0.72 moles NH₃.

1.2 g H₂ produces 0.39 moles NH₃.

The least amount of product that is formed is from hydrogen. Hence, hydrogen is the limiting reactant.

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The scientist associated with the discovery of the electron is J.J. Thomson.

The discovery of the electron is credited to the British physicist J.J. Thomson. In the late 19th century, Thomson conducted an experiment using a cathode ray tube, which led to the identification of the electron.

Thomson observed that when a high voltage was applied to the cathode ray tube, a beam of particles was emitted from the cathode and traveled towards the anode. He concluded that these particles were negatively charged and much smaller than atoms. Thomson named these particles electrons.

This discovery revolutionized our understanding of atomic structure. It provided evidence that atoms were not indivisible, as previously believed, but composed of smaller subatomic particles. Thomson's work laid the foundation for the development of modern physics and earned him the Nobel Prize in Physics in 1906.

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The scientist associated with the discovery of the electron is b. J.J. Thomson.

Renowned scientist J.J. Thomson is credited with discovering the electron. Thomson used a cathode ray tube in an experiment that he carried out in late 19th century that helped to identify the electron. He noted that a beam of particles was released from the cathode and moved in the direction of the anode when a high voltage was given to the cathode ray tube. He came to the conclusion that these particles were far smaller than atoms and negatively charged. These particles were dubbed electrons by Thomson.

This revelation completely changed how one thinks about atomic structure. It demonstrated that contrary to what was previously believed, atoms are actually made up of smaller subatomic particles. He also won the Nobel Prize in Physics for his contributions, which served as the cornerstone for the growth of contemporary physics.

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Complete Question:

Which scientist is associated with the discovery of the electron ?

a. Newton

b. J.J. Thomson.

c. Pierre Curie

When 100 milliliters of 0.10 molar KOH is added to 100 milliliters of 0.10 molar HCl at 298 K, the pH of the resulting solution will decrease.

This is because KOH is a strong base and HCl is a strong acid, and when they react together, they will neutralize each other. The products of this reaction will be water and potassium chloride (KCl), which is a salt. The pH of a solution is a measure of its acidity or basicity. It is defined as the negative logarithm of the hydrogen ion concentration (H+). A low pH means the solution is acidic, while a high pH means the solution is basic. When the KOH and HCl are mixed together, they will react to form water and KCl. Since both KOH and HCl are strong, they will completely dissociate in solution. The reaction can be represented as follows:

KOH + HCl → KCl + H2OWhen these two solutions are mixed, the H+ ions from the HCl will react with the OH- ions from the KOH to form water. The remaining ions will be K+ and Cl-, which will not affect the pH of the solution.

Therefore, the resulting solution will be neutral with a pH of 7.0.

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Answer:

B: It is extremely reactive

Explanation:

Potassium metal is also soft and white with a silvery lustre, has a low melting point, and is a good conductor of heat and electricity.

Answer: Properties, occurrence, and uses. Potassium metal is soft and white with a silvery lustre, has a low melting point, and is a good conductor of heat and electricity. Potassium imparts a lavender colour to a flame, and its vapour is green.

Explanation: hope it helps

electrical conductivity is the kind of defect or dislocation a carbon in a ti metal lattice represents.

The electrical conductivity of a metal is the result of the movement of charged particles. Atoms of metal elements are electrons in the outer shell of the atom and are characterized by the presence of valence electrons that can move freely around

Staircase dislocations and Lomer-Cottrell dislocations are examples of fixed dislocations. The two main types of movable dislocations are blade dislocations and spiral dislocations. The blade dislocations can be visualized as being caused by the termination of the atomic plane at the center of the crystal.

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Answer:

1) 2

2) 1

3)1

4) 2

5)3

6)1

7)yes except Oxygen

Answer:true

Explanation:

Answer:

nanoparticle cancer drugs could act like biological missiles that destroy tumors while minimizing damage to healthy organs

The coefficients needed to balance the redox reaction are: 2Fe(s) + 3Cl2(g) + 6H+(aq) -> 2Fe3+(aq) + 6Cl-(aq) + 3H2O(l)

The balanced redox reaction requires two molecules of chlorine gas to react with one atom of iron, producing one Fe3+ ion and two chloride ions. We need to balance both the mass and charge on each side of the equation.

Step 1: Balance the atoms other than oxygen and hydrogen.

Fe(s) + Cl2(g) -> Fe3+(aq) + 2Cl-(aq)

Step 2: Balance the oxygen atoms by adding water (H2O) molecules.

Fe(s) + Cl2(g) -> Fe3+(aq) + 2Cl-(aq) + H2O(l)

Step 3: Balance the hydrogen atoms by adding hydrogen ions (H+).

Fe(s) + Cl2(g) + 6H+(aq) -> Fe3+(aq) + 2Cl-(aq) + H2O(l)

Step 4: Balance the charges by adding electrons (e-).

Fe(s) + Cl2(g) + 6H+(aq) -> Fe3+(aq) + 2Cl-(aq) + H2O(l) + 6e-

The balanced equation for the redox reaction is:

2Fe(s) + 3Cl2(g) + 6H+(aq) -> 2Fe3+(aq) + 6Cl-(aq) + 3H2O(l)

The balanced redox reaction is 2 Fe(s) + 3 Cl2(g) -> 2 Fe3+(aq) + 6 Cl-(aq) with coefficients 2, 3, 2, and 6 respectively.

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When comparing the density of metals to that of liquids, the percentage error is more likely to rise.

A liquid's density is a gauge of how heavy it is relative to the amount being measured. The liquid that weighs heavier is more dense if you weigh two liquids with similar volumes or amounts. A substance less dense than water will float when it is gradually introduced to the water's surface.

The mass to volume ratio of an object determines its density. The unit of density is frequently grams per cubic centimeter (g/cm3). Keep in mind that the volume is measured in cubic centimeters, not grams (the same volume as 1 millilitre).

Direct measurement of a solid's volume is impossible. A solid, especially one with an irregular shape, has a higher potential for measurement error than a liquid.

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The atomic number of an element represents the number of protons in an atom of that element. Since the isotope given is Mn-59, the atomic number of manganese (Mn) remains the same, which is 25.

If an atom of Mn-59 has a charge of +5, it means that it has lost 5 electrons. The number of protons in an atom is equal to its atomic number, and the number of electrons is equal to the number of protons in a neutral atom. Therefore, if the atom has lost 5 electrons, the number of protons remains the same, which is 25.

So, an atom of Mn-59 with a charge of +5 has 25 protons.

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Answer:

(3.6×10^(-3))/(2.1×10^6) = 1.7×10^9 = False

Explanation:

Answer:

Part A

i) A property of water that contributes to its movement through capillary tubes is adhesion, which is the capacity of water to stick to other surfaces

ii) Water has a polar molecular structure as such the hydrogen present in the water molecules form bonds with the oxygen present in the silicon oxide molecules from which the capillary tube is normally made

Part B.

i) From the given graph, the function appears to have a vertical asymptote at x = 0, therefore, the plant can grow infinitely tall

ii) The molecular structure of the vessel can be modified such that the walls incorporate more oxygen molecules per mole which will increase the number and the strength of the hydrogen bond between the water molecules and the walls of the plant vessel and therefore, increase the capillary action, the water height and the maximum height of the tree

Explanation:

Acid nitric oxide

When a carboxylic acid combines with an acid chloride in the presence of a base, anhydrides are frequently produced.

The Fischer esterification, which involves reacting a carboxylic acid with an alcohol to produce an ester: RCO2H + R′OH RCO2R′ + H2O, is a well-known example of a dehydration reaction. The presence of a dehydrating agent, or a chemical that reacts with water, is frequently necessary for these processes.

Although an ester is produced when an acyl chloride and an alcohol react, this conversion cannot be stopped by adding HCl to the reaction mixture. One of the most popular carboxylic derivatives is esters.

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The molecular orbitals linked to H+ are more affected by nitrogen (N) rather than oxygen (O) when NO- ions react with H+ ions to form chemical bonds, resulting in the formation of HNO.

In the formation of chemical bonds, the reactivity and bonding characteristics are determined by the electronic configuration and orbital interactions of the atoms involved. In the case of NO- reacting with H+, we consider the electronic configurations of oxygen (O) and nitrogen (N) atoms.

Oxygen has six valence electrons and belongs to Group 16 of the periodic table. Its electronic configuration is 1s² 2s² 2p⁴. When forming bonds, oxygen typically accepts two electrons to achieve a stable octet configuration.

Nitrogen has five valence electrons and belongs to Group 15. Its electronic configuration is 1s² 2s² 2p³. Nitrogen typically needs to gain three electrons or share three pairs of electrons to achieve a stable octet configuration.

In the case of NO-, the oxygen atom carries a negative charge (O-), making it more electron-rich than nitrogen.

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Decreasing the TBCl concentration will not affect the rate constant in this experiment. The rate constant is determined by the specific reaction and temperature conditions and is independent of the reactant concentrations.

The rate constant (k) is a proportionality constant that relates the rate of a reaction to the concentrations of the reactants. However, the rate constant itself is not affected by the concentrations of the reactants. It is determined by the specific reaction and temperature conditions.

The rate of a chemical reaction can be expressed using the rate equation, which typically includes the concentration terms for the reactants raised to certain powers.

These powers, known as reaction orders, can be determined experimentally. However, the rate constant is a separate factor in the rate equation and is not dependent on the reactant concentrations.

By decreasing the TBCl concentration, the rate of the reaction may be affected, as the rate is directly proportional to the reactant concentrations.

However, the rate constant itself remains unchanged. The rate constant is influenced by factors such as temperature, presence of catalysts, and the nature of the reacting species, but not by the concentrations of the reactants.

Therefore, decreasing the TBCl concentration will not affect the rate constant in this experiment.

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Dennis g studio and I don't have any money

Sister chromatids is the term for the chromosomes that are identical after DNA replication.

Sister chromatids are identical chromosomes that are created during the process of DNA replication. DNA replication is the process where a DNA strand is copied, creating a new strand. During this process, each chromosome is split in half, forming two identical halves.

These halves are known as sister chromatids and are held together by a centromere. Sister chromatids are attached to one another during the interphase stage of the cell cycle and are separated during the metaphase stage of the cell cycle.

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10.45 kJ heat would be needed to change the temperature of 100g water from 10°C to 50°C.

Temperature is the degree of hotness or coldness expressed in phrases of any of several scales, inclusive of Fahrenheit and Celsius. Temperature shows the direction in which warmness electricity will spontaneously waft i.e., from a hotter body to a colder frame.

calculation:-

Heat = ms× change in temperature.

= 100 × 4.2 × 50-10

= 100 × 4.2 × 40

= 10.45 J

The heat of an item is the whole energy of all of the molecular movement inside that item. Temperature is the degree of the thermal power or common heat of the molecules in a substance.

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The change in boiling point of the solution rom the solvent is 3.545 °C. Then the boiling point of the solution is 83.62 °C.

Boiling point of a solution is the temperature at which it converts into its vapor state. The addition of a non-volatile solute leads to the elevation in boiling point of the solution.

The change in boiling point ΔT is related to the molality of the solution and molal elevation constant Kb of the solvent as follows:

ΔT  = Kb m

Given that molality = 1.33 m

Kb of benzene = 2.65 °c/m

then ΔT = 2.65 °c/m × 1.33 m = 3.524 °C

Boiling point of pure benzene = 80.1 °C

Then boiling point of the solution  = 80.1 + 3.524 = 83.62 °C

Therefore, the boiling point of the given solution is  83.62 °C.

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Your question is incomplete. But your complete question is as follows:

What is the boiling point, in °C, of a 1.33 m solution of C6H14 in benzene? Bp (benzene) = 80.1 °c Kb (benzene) =2.65 °c/m

Answer:

Explanation:

Answer:

True

Explanation:

Atomic radius can be defined as a measure of the size (distance) of the atom of a chemical element such as hydrogen, oxygen, carbon, nitrogen etc, typically from the nucleus to the valence electrons. The atomic radius of a chemical element decreases across the periodic table, typically from alkali metals (group one elements such as hydrogen, lithium and sodium) to noble gases (group eight elements such as argon, helium and neon). Also, the atomic radius of a chemical element increases down each group of the periodic table, typically from top to bottom (column).

Hence, the atomic radius of phosphorus is smaller than the atomic radius of magnesium. Basically, the atomic radius of phosphorus is 98 pm while the atomic radius of magnesium is 145 pm.

Answer:

identify the atoms on each side

count the atoms on its side

use coefficients to increase the atoms on each side

check to make sure you have the same number of each type of atom on each side

Answer:

3,4,2,1

Explanation:

Answer:  A.  1,1,1

Explanation:

The coefficients that will balance the equation; NH4OH(aq) →H2O(l) + NH3(g), is 1, 1, 1, because it proves the total number of atoms of each element on the LHS and RHS of the equation are equal, hence balanced.

LHS          RHS

N = 1            1

H = 5          5

O = 1            1

Answer:

the answer should be A I believe

Explanation:

The solutions to the system with the second right-hand side are x = 10/3 and y -5/3.

To choose a right-hand side which gives no solution, we need to make the two equations inconsistent. Let's consider the equation 3x + 2y = 10.

If we choose a right-hand side of 20, the equation becomes 3x + 2y = 20.

To make this inconsistent with the second equation, we can choose a right-hand side of 30. So, the first right-hand side that gives no solution is 20.

To choose a right-hand side which gives infinitely many solutions, we need to make the two equations dependent. Let's consider the second equation 6x + 4y = ?.

To make this dependent with the first equation, we need the two equations to be scalar multiples of each other. We can achieve this by choosing a right-hand side of 0 for the second equation. So, the second right-hand side that gives infinitely many solutions is 0.

For the two equations 3x + 2y = 10 and

6x + 4y = 0, the solutions can be found by solving the system of equations.

By substitution or elimination, we can find that the solution to this system is x = 10/3

and y = -5/3.

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Yes, o-hydroxyacetophenone is more polar than p-hydroxyacetophenone.

The reason behind this difference in polarity is the arrangement of the hydroxyl (OH) group on the aromatic ring.
In o-hydroxyacetophenone, the hydroxyl group is in the ortho position (adjacent to the acetyl group). This arrangement creates a strong intramolecular hydrogen bond between the oxygen of the hydroxyl group and the carbonyl oxygen of the acetyl group. This hydrogen bond increases the overall polarity of the molecule.
In contrast, p-hydroxyacetophenone has the hydroxyl group in the para position (opposite to the acetyl group on the aromatic ring). This arrangement does not allow for the formation of an intramolecular hydrogen bond between the hydroxyl group and the carbonyl group. As a result, the overall polarity of p-hydroxyacetophenone is lower compared to o-hydroxyacetophenone.
In summary, o-hydroxyacetophenone exhibits greater polarity than p-hydroxyacetophenone due to the presence of a strong intramolecular hydrogen bond in the ortho position.

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When water particles in their gaseous state lose enough energy, the gaseous state of water converts to the liquid state as the kinetic energy of particles decreases.

In the gaseous state, water molecules have higher kinetic energy compared to the liquid state. When water particles lose energy, typically through cooling or condensation, their kinetic energy decreases. As a result, the water molecules slow down and come closer together, forming intermolecular forces that enable them to condense into the liquid state.

This phase transition occurs when the average kinetic energy of the water particles decreases below a certain threshold, allowing them to transition from the highly mobile and energetic gaseous state to the more ordered and cohesive liquid state.

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Organisms with a large number of cells in their body systems are called multicellular organisms. Plants and animals, as stated in this question, are examples of multicellular organisms.

In contrast to a unicellular organism, a multicellular organism is one that has more than one cell. Caenorhabditis is an elegant nematode.

Plants, animals, and some fungi and algae are multicellular, just like humans. The cell nuclei of a multicellular organism are always eukaryotic. Humans also have multiple cells.

An organism with multiple cells that are integrated and autonomous to varying degrees is known as a multicellular organism.

Most fungi, most animals, and land plants are multicellular, as are many algae. However, some organisms, like slime molds and social amoebas like the genus Dictyostelium, are both uni- and multicellular.

Organisms with multiple cells include fungi, plants, and animals. Organisms with multiple cells have a much larger size and extremely intricate structure and composition. Multicellular organisms include people, animals, plants, and insects.

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