hydrogen bonding is crucial to the transpiration-cohesion-tension mechanism. true or false
Answers
The given statement "hydrogen bonding is crucial to the transpiration-cohesion-tension mechanism" is true because it enables the cohesive properties of water that allow for efficient water transport in plants.
The transpiration-cohesion-tension mechanism is the process by which water is transported through the xylem tissue of plants from the roots to the leaves. This mechanism relies on the cohesion of water molecules and the tension created by transpiration (the loss of water vapor through the stomata of leaves).
Hydrogen bonding, which is a type of chemical bonding between the hydrogen atom of one molecule and the electronegative atom of another molecule, is crucial to the transpiration-cohesion-tension mechanism. The cohesion of water molecules is due to the presence of hydrogen bonds between adjacent water molecules.
As water molecules evaporate from the surface of leaves during transpiration, they create a negative pressure (tension) that pulls additional water molecules up through the xylem tissue. This process of water transport is only possible due to the strong hydrogen bonds between water molecules, which allow them to stick together and resist the force of gravity.
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Related Questions
Give an example of a non-biological chemical reaction that involves carbon. Name the process that converts a solid compound into a gas.
Answers
Answer: The combustion of methane (CH4) with O2.
Explanation: This is a chemical reaction involving carbon:
CH4 + 2O2 = CO2 + 2H2O
The solution for bounded buffer problem provided in section 7.1.1 does not work correctly if there are more than one producer or consumer.
a. true
b. false
Answers
It is TRUE that the solution for the bounded buffer problem provided in Section 7.1.1 does not work correctly if there are more than one producer or consumer.
Edsger W. Dijkstra first described the producer-consumer problem, also known as the bounded-buffer problem, as a series of computer-related problems in 1965.
Both producers and consumers are in equal numbers. Each consumer then reads the data from the shared buffer as each producer continuously adds positive integers to it.
The following program is unique from others in that each producer only loads a specific number of integers into the buffer (referred to as "Max Run"). After that, the producer adds an EOD to the buffer before departing. If the returned number is an EOD, the consumer terminates the call. There will eventually be an end to all production and consumption if there are exactly the same numbers of producers and consumers and if each produces and consumes exactly one EOD. The circle of producers and consumers in our text never comes to an end!
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gravity is the force that keeps the planets orbtiting the sun true or false
Answers
Answer:
True
Explanation:
Gravity alone holds us to Earth's surface. Planets have measurable properties, such as size, mass, density, and composition. A planet's size and mass determines its gravitational pull.
The decomposition of dinitrogen tetraoxide (N2O4) into nitrogen gas (N2) and oxygen gas (O2) is shown by which balanced chemical equation?
a. N2O4 → N2 + O2
b. N2 + 2O2 → N2O4This answer is incorrect.
c. N2O4 → N2 + 2O2
d. N2O4 + 2O2 → N2
Answers
Answer:
C. N₂O₄ → N₂ + 2O₂
General Formulas and Concepts:
Chemistry - Reactions
Reaction PredictionBalancing RxNsDecomposition Reactions: AB → A + BExplanation:
Step 1: Define
N₂O₄ decomposes into N₂ and O₂
Step 2: RxN
Unbalanced RxN: N₂O₄ → N₂ + O₂
Need to balance the reactants and productsBalanced RxN: N₂O₄ → N₂ + 2O₂
Need same number of oxygens (O) on both sides"Ions and Isotopes Practice
plete the following:
. For each of the ions listed, identify the total number of electrons for each
1. A1+³
2. Fe*3
3. Mg2
4. Sn¹2
5. Co-²
6. Co
7. Lit¹
8. Cr+3
9. Rb-¹
10. Pt¹2
Answers
The electron is a subatomic particle with a negative one elementary charge electric charge. Due to their lack of known components or substructure, electrons, which are part of the first generation of the lepton particle family, are typically regarded to be elementary particles.
For each of the ions listed, identify the total number of electrons for each
Al+3 = 10Fe+3 = 23Mg-2 = 14Sn+2 = 48Co-2 = 29Co-3 = 30Li+1 = 2Cr+3 = 21Rb-1 = 38Pt+2 = 76You must keep in mind that when an ion bears a positive charge, the number of electrons is lower than the number of protons in order to compute the number of electrons in the positive-charged ion. Therefore, you must subtract the magnitude of charge (which is frequently expressed as a superscript on the right side of the symbol) from the atomic number or proton number in order to obtain the number of electrons.
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A typical level of sodium in blood is 3.24 mg/mL. What is the millimolar concentration of sodium in blood?
Answers
Answer:
black lives dont matter
Explanation:
Answer:
sorry you have to get the answer yourself without using the internet.
regards,
Weill
Explanation:
Please I need help with this. Whoever answers it correctly will get Brainly
Answers
Answer: if the question says between Animals than a you didn't include the whole question.
Explanation:
CH3-CH2-CH-CH2-NH3
CH3
i) Write the IUPAC name of above structure.
Answers
Answer:
The IUPAC name of above structure is N-Methylethanamine.
Answer:
N-methylprop-2-en-1-amine.
C3H 2 = C2H C1H2NHCH3
Hint:
One can solve this question by keeping in mind the IUPAC nomenclature rules. If nitrogen is present, it can be either amine or amide functional group. Parent carbon chain can be determined by calculating the number of carbons in the longest carbon chain.
Complete step by step answer: If organic compounds contain one principal functional group then the longest continuous chain of carbon atoms having that functional group is selected. Functional groups are specific substituents in the molecules which are responsible for the characteristic chemical reactions of those molecules. The IUPAC nomenclature of organic chemistry is a system of organic chemical compounds in nomenclature of chemicals as stated by the International Union of Pure and Applied Chemistry. Informally we call it the Blue Book. The book mentions certain rules for naming of compounds having functional groups. As per IUPAC rules, the first thing is to select the longest continuous chain. In the given compound, the longest chain has three carbon atoms, so its root word is prop. We will start the number from carbon which is next to nitrogen to the left. This gives us a double bond on second position and can be written as 2-ene. We can see that there is a methyl group attached to the nitrogen of amine functional group, so we can write it as N-methyl. Putting the suffix as the name of the functional group,
we end up getting the correct IUPAC name of this compound as N-methylprop-2-en-1-amine.
Note:
The Amine group is represented by NH3 . When we
replace the hydrogens attached to nitrogen with any other compound, it becomes either primary or secondary or tertiary amine with respect to the number of hydrogens replaced. In our case, two hydrogens were replaced, so the compound is secondary amine.
What are these means in Periodic Table;
Group
Period
Block
Answers
2. Period: Periods show the number of energy levels each element has and are shown in rows on the periodic table (up and down).
3. Blocks are show the amount of orbitals each element has. There is an s block, d block, p block, and f block.
what gives bases their properties?
Answers
What are 3 interesting facts about otters?
Answers
Otters are fascinating creatures with many interesting facts. The 3 interesting facts about otters are Exceptional Swimmers, Tool Users, and Social Creatures.
1. Exceptional Swimmers: Otters are known for their incredible swimming abilities. They have webbed feet and a streamlined body shape, which allows them to navigate through water with ease. Otters use their tails to propel themselves forward while swimming, and they can swim up to speeds of 7 miles per hour! Additionally, otters have the ability to hold their breath for several minutes underwater, enabling them to dive deep in search of food.
2. Tool Users: Otters are one of the few mammals that use tools. They are known to use rocks to crack open the shells of their prey, such as clams or mussels. Otters will often float on their backs, placing the shell on their chests, and repeatedly hitting it against the rock until it breaks open. This behavior demonstrates their intelligence and adaptability in using objects as tools to obtain food.
3. Social Creatures: Otters are highly social animals. They usually live in groups called rafts, which can consist of several otters, including adults and their offspring. Within these rafts, otters engage in playful behavior, such as sliding down mud or snow banks. Play is not only a source of entertainment but also helps young otters learn vital skills for hunting and survival.
These three facts highlight the amazing swimming abilities, tool usage, and social nature of otters.
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what is the element in which at least one electron is in the d-orbital?group of answer choicesa) 3d1b) 2p3c) 3s1d) 3p2
Answers
The element in which at least one electron is in the d-orbital is option (a) 3d1.
This means that the electron configuration of this element includes one electron in the d-orbital, specifically the third energy level and the first d-subshell. The d-orbitals are a set of five orbitals that have a more complex shape than the s and p orbitals. They are involved in bonding and can hold up to 10 electrons. Transition metals and some other elements in the middle of the periodic table often have electrons in the d-orbitals. This is because they have a higher atomic number and can fill the energy levels up to the d-subshell. Understanding electron configuration is important in understanding chemical bonding and reactivity of elements.
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the hydrolysis of sucrose is represented by the chemical equation above. this reaction is extremely slow in aqueous solution
Answers
The hydrolysis of sucrose is extremely slow in an aqueous solution that can be increased by catalysts.
The sucrase-sucrose complex is produced as an intermediate in a separate reaction pathway with a lower activation energy through which the process progresses.
By offering a new reaction pathway with lower activation energy, catalysts can speed up a reaction. The diagram is consistent with a two-step mechanism in which the sucrase-sucrose complex is created in the first stage as an intermediate and depleted in the second.
An equimolar mixture of fructose and glucose is produced during the hydrolysis of sucrose, which is known as inverted sugar in the food industry.
Inversion is the process of hydrolyzing sucrose to produce glucose and fructose. Invert sugar is the result of the hydrolysis of sucrose, which causes the sign of rotation to shift from dextro (+) to laevo (-).
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The relative age of a rock or fossil tells us: the exact age OR the age compared to other rocks or fossils
Answers
Relative dating determines which of two fossils is older or younger than the other, but not their age in years. Relative dating is based on the positions of fossils in rock layers. Lower layers were laid down earlier, so they are assumed to contain older fossils. ... This gives the fossil an approximate age in years.
Consider the half reaction below.
Which statement best describes what is taking place?
Chlorine is losing electrons and being oxidized. Chlorine is losing electrons and being reduced. Chlorine is gaining electrons and being oxidized. Chlorine is gaining electrons and being reduced.
Answers
Answer:
balancing of charges of both sides
Answer:
A
Explanation:
A...............................
How is it possible that a substance like liquid nitrogen can boil when it is very cold?
help needed...
Answers
Answer:
Liquid nitrogen, on the other hand, boils at a much colder temperature. Liquid nitrogen boils at -320 degrees. That means that as soon as LN2 leaves our special holders and hits the air, it instantly vaporizes because the air around it is so cold.
Explanation:
A gaseous mixture consisting of nitrogen, argon, and oxygen is in a 3.5-L vessel at 25C. Determine the number of moles of oxygen if the total pressure is 98.5kPa and the partial pressure of nitrogen and argon are 22.0kPa and 50.0kPa, respectively.
Answers
Answer:
Number of moles of oxygen = 0.037 mol
Explanation:
Given data:
Total pressure = 98.5 KPa
Partial pressure of nitrogen = 22.0 KPa
Partial pressure of argon = 50.0 KPa
Volume = 3.5 L
Temperature = 25°C (25+273= 298K)
Number of moles of oxygen = ?
Solution:
Total pressure = P(N₂) + P(O₂) + P(Ar)
98.5 KPa = 22.0 KPa +P(O₂) + 50.0 KPa
98.5 KPa = 72.0 KPa +P(O₂)
P(O₂) = 98.5 KPa - 72.0 KPa
P(O₂) = 26.5 KPa
KPa to atm:
26.5 KPa/ 101 = 0.262 atm
Number of moles of oxygen:
PV = nRT
n = PV/RT
n = 0.262 atm × 3.5 L / 0.0821 atm.L/mol.K × 298 K
n = 0.917atm.L /24.47atm.L/ mol
n = 0.037 mol
How many molecules of NaOH are in 10.0 g of NaOH? *
Answers
The number of molecules in 10.0 gram of NaOH is 15 * 10²².
To solve this question, we need to understand some terms of mole concept,
Mole - It is the amount of substance containing same number of molecules or atoms as there are atoms in 12 gram of carbon-12 isotope.
Molecules - It is group of atoms bonded together, representing the smallest fundamental unit of a chemical compound taking part in chemical reaction.
Molecular weight - The sum of atomic masses of all atoms in molecules.
Avogadro number - It is the number of atoms, ions, electrons, molecules in one mole of substance. It is represented as NA.
NA = 6.0 * 10²³ (approx)
To calculate the number of molecules, we apply the formulae,
no. of molecules = moles * NA
moles = weight / molecular weight
moles = 10.0 / 40
= 0.25
Substituting this value to calculate number of molecules,
no. of molecules = 0.25 * 6.0 * 10²³
= 15 * 10²²
Therefore the number of molecules of in 10.0 g of NaOH is 15 * 10²².
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2. If you put 156. 32g barium hydroxide into this reaction, how much aluminium hydroxide can be
produced?
Answers
When 156.32 g of barium hydroxide is reacted, approximately 142.34 g of aluminum hydroxide can be produced, based on the balanced chemical equation and stoichiometry.
To determine the amount of aluminum hydroxide that can be produced when 156.32 g of barium hydroxide is reacted, we need to consider the balanced chemical equation for the reaction and use stoichiometry.
The balanced chemical equation for the reaction is:
Ba(OH)2 + 2AlCl3 → 2Al(OH)3 + 3BaCl2
From the balanced equation, we can see that for every 1 mole of Ba(OH)2, 2 moles of Al(OH)3 are produced.
First, we need to calculate the number of moles of barium hydroxide (Ba(OH)2) in 156.32 g:
Molar mass of Ba(OH)2 = (137.33 g/mol + 2(16.00 g/mol + 1.01 g/mol)) = 171.34 g/mol
Moles of Ba(OH)2 = mass / molar mass = 156.32 g / 171.34 g/mol = 0.911 mol
Now, using the stoichiometry of the balanced equation, we can determine the moles of aluminum hydroxide (Al(OH)3) produced:
Moles of Al(OH)3 = 2 × Moles of Ba(OH)2 = 2 × 0.911 mol = 1.822 mol
Finally, to convert the moles of aluminum hydroxide to grams, we need to multiply by the molar mass of Al(OH)3:
Molar mass of Al(OH)3 = (26.98 g/mol + 3(16.00 g/mol + 1.01 g/mol)) = 78.00 g/mol
Mass of Al(OH)3 = Moles of Al(OH)3 × molar mass = 1.822 mol × 78.00 g/mol = 142.34 g
Therefore, when 156.32 g of barium hydroxide is reacted, approximately 142.34 g of aluminum hydroxide can be produced.
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What electrolyte may fall in level as a result of citrate toxicity from massive transfusion quizlket
Answers
the osmolarity of a cell is 0.3 osm. which solution of nacl is isosmotic to the cell?
Answers
The osmolarity of a cell is 0.3 osm. then the solution of a 0.3 osm NACL is isosmotic to the cell. An isosmotic solution is one that has the same osmolarity as the reference solution.
The number of osmoles (Osm) of solute per litre (L) of solution (osmol/L or Osm/L) is the definition of osmotic concentration, formerly known as osmolarity. Similar to how a solution's molarity is written as "M," a solution's osmolarity is typically expressed as Osm/L . Osmolarity, as opposed to molarity, which counts the moles of solute per unit volume of solution, counts the osmoles of solute particles per unit volume of solution. With the help of this number, it is possible to calculate the osmotic pressure of a solution and predict how an osmosis membrane that separates two solutions with differing osmotic concentrations will function.
The osmolarity of a 0.3 osm NACL solution that is isosmotic to the cell is 0.3 osm. Osmolarity is a measure of the total molar concentration of all dissolved particles in a solution, expressed as osmoles of solute per liter of solution (osmol/L). An isosmotic solution is one that has the same osmolarity as the reference solution. The osmolarity of a solution is calculated by multiplying the molar concentration of the solution by the number of particles the solute produces when dissolved.
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I don’t even know what this is. Please help
Answers
FeCl2
FeCl3
GaCl3
AgCl
PbCl4
which group has different numbers of valence electrons
Answers
Answer:
where are the group?
Explanation:
Answer:
Transition metals
Explanation:
Name each compound
NaF
K2CO3
….
Answers
potassium carbonate
for the sn1 reaction, draw the major organic product, identify the nucleophile, substrate, and leaving group, and determine the rate limiting step.
Answers
C4H9OH is the substrate, Br- is the nucleophile and H2O is the leaving group.
In an SN1 reaction, the rate limiting step is the formation of the carbocation. The carbocation is formed as water which is the leaving group departs. After the leaving group departs, the nucleophile (Br-) attacks to yield the major organic product. The protonation of the -OH group is the first step in the reaction.
It then follows that, C4H9OH is the substrate, Br- is the nucleophile and H2O is the leaving group.
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what is the slope of the line segment
-3
-1/3
1/3
3
Answers
Answer:
slope = 3
Explanation:
\(slope = \frac{3 - 0}{1 - 0} \\ = 3\)
All of the following are qualitative tests that are often used to identify unknown ionic compounds except __________
Answers
All of the following are qualitative tests that are often used to identify unknown ionic compounds except titration.
Qualitative tests are conducted to determine the presence or absence of certain ions or compounds in a sample based on their characteristic reactions. Common qualitative tests include flame tests, precipitation reactions, color changes, and gas evolution tests.
Titration, on the other hand, is a quantitative technique used to determine the concentration of a specific substance in a solution by reacting it with a standardized solution of another substance. It is not typically used as a qualitative test for identifying unknown ionic compounds.
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What is the mass of 4 moles of CO₂?
Answers
The first thing we need to do is calculate the mass of one mole of carbon dioxide, and we get:
(Mass of Carbon) + (Mass of 2 Oxygen atoms) = Molar mass
Mass = 12 + (2 × 16) = 44gTherefore, carbon dioxide has a molar mass of 44 grams, which is the mass of the gas
In order to determine the mass of 4 molecules of carbon dioxide, we need to multiply it by 4 × 44 = 176g.
Hope this helps :)
\({ \qquad\qquad\huge\underline{{\sf Answer}}} \)
Here we go ~
lets calculate Molar mass of \({\sf CO_2} \) :
\(\qquad \sf \dashrightarrow \: Molar \: \: mass \: \: of \: \: C O _2 = 12 + 2(16)\)
[ Molar mass of\({\sf \: CO_2 } \)= Molar mass of Carbon + 2×( Molar mass of Oxygen )]
\(\qquad \sf \dashrightarrow \: Molar \: \: mass \: \: of \: \: C O _2 = 12 + 32\)
\(\qquad \sf \dashrightarrow \: Molar \: \: mass \: \: of \: \: C O _2 = 44 \: g\)
[ i.e 1 mole of \({\sf CO_2} \) weights 44 grams ]
So, by unitary method :
\(\qquad \sf \dashrightarrow \: 1 \: \: mole \: \: CO_2 = 44 \: \: g\)
\(\qquad \sf \dashrightarrow \: 4 \: \: moles \: \: CO_2 = (44\times 4) \: \: g\)
\(\qquad \sf \dashrightarrow \: 4 \: \: moles \: \: CO_2 = 176 \: \: g\)
Therefore, 4 moles of CO2 weights 176 grams
when a magnet is moved alongside a wire, what happens?
A. the electric movement stops
B. the protons move to the correct poles
C. the magnet repels like forces
D. the electrons in the wire begin to flow
Answers
Explanation:
D.the electrons in the wire begin to flow
Identify the products in the following chemical resction 2NaHCO3 + CaCI2 --> CaCO3 + CO2 + 2NaCI + H2O
Answers
the products are:
CaCO3 Calcium Carbonate
CO2 carbon dioxide
NaCI Sodium chloride
H2O Water