Explanation:
#IHOPEIHELPYOU PA BRAINLY NA LANG POPLEASE HELP, DUE AT 12:00
Answer:
5.C6.DExplanation:
YONG ISA PO ETO HINDI KO PO ALAM TOH
The primary forces of attraction between water molecules in H2O(l) are
1.
ionic bonds
2.
hydrogen bonds
3.
molecule-ion attractions
4.
van der Waals forces
Submit Answer
Answer:
2. Hydrogen Bonds
Explanation:
Since water is a polar covalent molecule, there is a slight negative and positive end. Due to this, the oxygen end of one water molecule gravitates towards the hydrogen molecules of another water molecule. This accounts for a bunch of weird properties of water, like why ice floats. It's also what makes water the "universal solvent," and gives all life on earth the ability to even exist.
The primary forces of attraction between water molecules in H₂O (I) are hydrogen bonds.
What kind of chemical bonding is present in water molecule?Hydrogen bonding is present in water molecule due to which it exhibits an excellent property of adhesion to itself and to other substances.The hydrogen bonding is a result of electrostatic forces of attraction which are generated by the difference in charge between slightly positive hydrogen ions and slightly negative other ions.
In case of water,hydrogen bonds are formed between neighboring hydrogen and oxygen atoms of the nearby water molecules.The attraction between water molecules itself results in a formation of a bond called as a hydrogen bond.
It is a type of covalent bond which is formed between hydrogen and oxygen atoms as one oxygen atom shares its two electrons with two hydrogen atoms .The positive charge of one hydrogen atom associates with negative charge of oxygen atom.These are weak interactions which are formed between a hydrogen atom each with a partial positive charge and an oxygen atom which is more electronegative than hydrogen.
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Which statement is true?
Answer:
A I think
Explanation:
Ksp for potassium chloride, KCl, is 21.7. A 5.0-liter container filled with otherwise-pure water, at standard temperature and pressure, contains 21.5 moles of dissolved KCl. (A) Write a chemical reaction describing the dissolution of KCl. (B) Write an equation for Ksp in terms of the reactants and products from part (A). (C) Find the solubility of KCl, in moles/liter. (D) Is the above solution undersaturated, supersaturated, or at equilibrium with respect to KCl
Answer:
See explanation below
Explanation:
a) First, as the KCl is a salt, this will ve completely dissociated by water in solution and the reaction taking place would be:
KCl <-----------> K⁺ + Cl⁻
b) According to the above reaction, the Ksp or constant of solubility product will be just the concentration of the products. This is because solid compounds do not contribute in the equilibrium expression, cause they have a constant concentration near to 1. Same thing happens with liquid compounds. So, based on this the Ksp expression for the above reaction is:
KCl(s) <-----------> K⁺(aq) + Cl⁻(aq)
Ksp = [K⁺] [Cl⁻]
c) To find this solubility we need to write the Ksp expression from above, use the given Ksp value and then solve for the solubility:
KCl(s) <-----------> K⁺(aq) + Cl⁻(aq)
Ksp = [K⁺] [Cl⁻]
21.7 = s * s
21.7 = s²
s = 4.66 mol/L
d) To know this, we need to see the concentration of the KCl in solution with the given data of 21.5 moles and the 5 liters of solution:
[K⁺] = [Cl⁻] = 21.5 / 5 = 4.3 mol/L
If we want to calculate the Ksp at this conditions we have:
Ksp2 = (4.3)²
Ksp2 = 18.49
As this value is lower than the actual Ksp value, we can conclude that this solution is undersaturated.
Hope this helps
write a story of your life when you were hurted by someone whom you trusted blindly...
Answer:
Sis I think it happened with me but I am not able to remember if u want u can share if it happened with u
Which of the first four radioisotopes in the decay series has the longest half-life? Pa-234 Th-234 U-234 U-238
Answer:
can u explain a little more then i will help like what are the four
Explanation:
Answer:
d) U-238
Explanation:
edg 2021
two differences between weather and climate
subject-science
Answer:
weather- rain, hail, snow, sunny, dry, etc.
climate- warm, cold, humid, dry, etc.
Explanation:
The difference if weather and climate is that climate is the way the temperature is, whether it's warm, cold, humid, dry. While weather is the state of the atmosphere at a place and time as regards heat, dryness, sunshine, wind, rain, etc.
=jskidwkjicdovfojvoeeeeeeeeeeeeeeeeeeeeeeeec
Answer:
you need a theripist or maybe just your girl if this is your question.
Explantion: you are clearly very weird but very cute and ily.
The blank
and
blank
of atoms are the same on both sides of
a chemical equation.
Please just answer the question directly instead of giving me some weird cryptic answer that I can’t use. I’ve seen this exact question answered before and nobody would give a straight answer.
Help me find out which reaction is balanced
Answer:The answer is c
Explanation:
Can anyone please help?
Answer:
Earth
Explanation:
Earth is unique in the fact that we have an oxygen-rich atmosphere
Which statement best describes what occurs during a chemical reaction?
Chemical reactions involve breaking chemical bonds between reactant molecules (particles) and forming new bonds between atoms in product particles (molecules). The number of atoms before and after the chemical change is the same but the number of molecules will change
Answer:
The bonds in reactants break so that elements can rearrange form new products
Explanation:
do carbon has ions charge?
Carbon has an outer shell consisting of 4 valence electrons. ... Thus, a carbon ion can have a charge of anywhere from -4 to +4, depending on if it loses or gains electrons. Although the most common oxidation states of carbon are +4 and +2, carbon is able to make ions with oxidation states of +3, +1, -1, -2, and -3.
In the compound Na3PO4, which two atoms are involved in the formation of a covalent bond?
Answer:
P-O.
Explanation:
Hello there!
In this case, according to the definition of the covalent bond, which involves valence electrons sharing, occurring specially between nonmetals, we infer that the P-O bond is the most likely to be covalent, because the P-Na bond is not present and the O-Na bond is ionic.
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Why is one side of the moon called "the dark side of the moon"?
O A. The moon's rotation and revolution take the same time.
B. The moon's rotation time is exactly twice the time of its revolution.
Ο Ο
C. The moon's rotation time is exactly half the time of its revolution.
1 point
To help you with estimating, the individual answers to A, B, C should all
have zero in the one's place. Add those answers up to get the numerical
code. Input that code to move on.*
A) 56 g NH3 can be dissolved in 100 g of water at °C
B) At 50°C, 166 g of KNO, can be dissolved in g of water to make a saturated
solution
C) At 76°C, KCI and HCI have the same solubility. What mass of each could be dissolved in
80 g of water?
Your answer
This is a required question
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Answer:ee
Explanation:
Commercial soaps are mixtures of ionic compounds typically made up of monatomic cations, such as Na and K , and organic polyatomic anions derived from fatty acids. These negatively charged molecular ions are characterized by the presence of hydrocarbon chains which are 12 to 18 carbon atoms long. How hard (solid, insoluble) or soft (liquid, soluble) a soap is depends on the nature of the anions and cations present in the system. Analyze how each of the following factors may affect the hardness or softness of soaps:
1. The nature of the cations. For example, Na* vs Li* vs K.
2. The length of the hydrocarbon chain. For example, 12 carbons (laureate lon), 14 carbons (myristate lon), or 18 carbons (stearate lon).
Answer:
Following are the solution to the given question:
Explanation:
For question 1:
The sodium soap containing Na+ is strong whereas the softer or liquids were potassium soap.It's hard to use lithium soap.These Na+, K+, and Li+ ions act as the hydrophilic center.Calcium and Magnesium ions could be substituted by hard water with increasing hydrophilicity.For question 2:
The hydrophobicity of its carbon chain increases but one appears weaker with only an increased length.Therefore, the laureate is hard, while the stearate is soft.According to the following reaction, how many grams of hydrogen
gas are required for the complete reaction of 32.5 grams of nitrogen
gas?
nitrogen (g) + hydrogen (g) — ammonia (g)
…grams hydrogen gas
Answer:
7.03 g
Explanation:
Step 1: Write the balanced synthesis reaction
N₂(g) + 3 H₂(g) ⇒ 2 NH₃(g)
Step 2: Calculate the moles corresponding to 32.5 g of N₂
The molar mass of N₂ is 28.01 g/mol.
32.5 g × 1 mol/28.01 g = 1.16 mol
Step 3: Calculate the number of moles of H₂ needed to react with 1.16 moles of N₂
The molar ratio of N₂ to H₂ is 1:3. The moles of H₂ needed are 3/1 × 1.16 mol = 3.48 mol.
Step 4: Calculate the mass corresponding to 3.48 moles of H₂
The molar mass of H₂ is 2.02 g/mol.
3.48 mol × 2.02 g/mol = 7.03 g
How do new traits enter a population?
Which molecule is shown below?
H
H-C-H
H
Η Η Η Η
H-C-C-C-C-C-C-H
1 | | |
H H H H H H
O A. 2-ethylhexane
B. 2-methylhexane
C. 3-ethylhexane
D. 3-methylhexane
Answer:
b. 2-methylhexane
Explanation:
ap3x approved
The molecule shown below is - 2-methylhexane and the correct option is option B.
What is IUPAC Nomenclature?
The IUPAC system of nomenclature is a set of logical rules framed which are mainly aimed at giving an unambiguous name to an organic compound.
IUPAC stands for International Union of Pure and Applied Chemistry
A prefix to the name comes before the molecule. The prefix of the molecule's name is based on the number of carbon atoms.
For example, a chain of six carbon atoms would be named using the prefix hex-.
The suffix to the name is an ending that is applied that describes the types of chemical bonds in the molecule.
The molecule has 6 carbon atoms and a methyl group at the second position.
Therefore, The molecule is 2-methylhexane and the correct option is option B.
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While recording the crime scene, the photographer snapped a picture of his partner posing beside the famous victim's body. After printing the photo for his partner, he should just delete the image so nobody gets in trouble. (T/F)
While recording the crime scene, the photographer snapped a picture of his partner posing beside the famous victim's body. After printing the photo for his partner, he should just delete the image so nobody gets in trouble is false.
What is photographer?Photographer is defined as a specialist who concentrates on the craft of shooting pictures with a digital or film camera. We can now describe the present, visualize the future, and visualize the history thanks to photography. The predecessor to the contemporary digital camera was the camera obscura. In the past, paintings were the most popular medium for capturing important historical events.
An approach known as "painting with light" is frequently used by seasoned photographers to expose image details in dim or near-dark lighting. By holding the shutter open for a few seconds or minutes while moving around the scene, the photographer can add light from sources like a flashlight or a flash from a separate camera.
The photographer's partner was photographed posing next to the body of the well-known victim as he documented the murder scene. It is erroneous to say that after printing the photo for his spouse, he should immediately erase it.
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Use the nutrition label to answer the following questions.
16.How much energy is contained in
the six-cookie serving size
recommended on the label?
17.How much energy in joules is provided by eating
six cookies? (1 cal = 4.184 J; ALSO: 1 Calorie = 1
kilocalorie)
Answer:
six cookies?(1 cal _4.184 j; ALSO: 1 Calorie -1 kilocalorie)
Which laws protect citizens against human trafficking
Answer:
It depends on the country you are coming from. For example, the human trafficking laws in the US are different from UK. If you need an essay on this contact me on (irenedavid at g mail dot com)
Explanation:
Sea turtles use the earths geomagnetic filed to navigate their way home. What is the reason earth has a geomagnetic filed?
Answer:
Due to the iron inside the earth.
Explanation:
Imagine a sphere of Iron, as big as two-third the size of the moon and as hot as 5700 Kelvin. That is the Earth’s core.
The iron core isn't in its liquid form even at that temperature because it is crushed under immense gravity. This core is surrounded by 2000 km of other metals like iron and nickel which are in their molten state.
The temperature is not the same at every point in this molten layer. The hotter and less dense matter rises up, and the warm denser matter sinks. This causes convectional currents in the interior of the Earth.
Because of the Earth’s spin, there is a force that is established called the Coriolis force which causes swirling whirlpools here too.
This flow of molten metals produces electric currents which generate self-sustaining magnetic fields. And as a result of the Coriolis force, all these combined effects add up to produce one big magnetic field engulfing the Earth aligned in one direction.
Hi, what are you doing?
Answer:
i am dancing and you ok hom
is chemistry hard in grade 11
explain to me everything plsss thanks
Explanation:
Chemistry is overall a very interesting subject and it really depends on what you personally consider enjoyable. I love chemistry and I think that grade 11 chemistry is very easy. It's mostly based on balancing chemical equation, molar mass calculations and more. But it's a great course to take based on my experience.
What is the new concentration? L
M NaCl
Answer:
Explanation:
\we must convert the mass of NaCl in grams into moles. We do this by dividing by the molecular weight of NaCl (58.4 g/mole). Then, we divide the number of moles by the total solution volume to get concentration. The NaCl solution is a 0.1 M solution.
Answer:
0.125
Explanation:
boom
Why is medical technology good for society?
O A. It creates more jobs to do by hand,
B. It makes bilingspitals bigger.
C. It gives patients more illnesses.
D. It helps doctors treat diseases.
Consider an electron with charge −e−e and mass mmm orbiting in a circle around a hydrogen nucleus (a single proton) with charge +e+e. In the classical model, the electron orbits around the nucleus, being held in orbit by the electromagnetic interaction between itself and the protons in the nucleus, much like planets orbit around the sun, being held in orbit by their gravitational interaction. When the electron is in a circular orbit, it must meet the condition for circular motion: The magnitude of the net force toward the center, FcFcF_c, is equal to mv2/rmv2/r. Given these two pieces of information, deduce the velocity vvv of the electron as it orbits around the nucleus. Express your answer in terms of eee, mmm, rrr, and ϵ0ϵ0epsilon_0, the permittivity of free space.
Answer:
Explanation:
The net force on electron is electrostatic force between electron and proton in the nucleus .
Fc = [tex]\frac{1}{4\pi\epsilon} \times \frac{e\times e}{r^2}[/tex]
This provides the centripetal force for the circular path of electron around the nucleus .
Centripetal force required = [tex]\frac{m\times v^2}{r}[/tex]
So
[tex]\frac{m\times v^2}{r}=\frac{1}{4\pi\epsilon} \times \frac{e\times e}{r^2}[/tex]
[tex]v^2=\frac{e^2}{4\pi \epsilon m r}[/tex]
[tex]v=(\frac{e^2}{4\pi \epsilon m r})^{\frac{1}{2} }[/tex]
Name one trend observable in a periodic table
Answer:
Major periodic trends include: electronegativity, ionization energy, electron affinity, atomic radius, melting point, and metallic character.
Explanation:
These six are the major trends.