The statement is false about aldehydes that have a central carbon bound to two other carbons.
Why is it referred to as aldehyde?All aldehydes possess a double bond between carbon and oxygen, which is termed to as the carbonyl group. Many aldehydes have pleasant aromas, and in principle, they are made from alcohols by the process of dehydrogenation (removal of hydrogen), which is how the word "aldehyde" originated.
What are the uses of aldehydes?Aldehydes are versatile substances that can be utilized to create resins, dyes, organic acids, as well as detergents, soaps, and scents for cologne. Formaldehyde is the aldehyde that is most frequently generated industrially. According to research, cinnamonaldehyde is a natural health molecule that is administered to treat both diarrhoea and the common cold.
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PLEASE HELPPPPP NOWWWW
What is the molecular formula for a compound that is composed of 44.45 g of carbon,3.73 g of hydrogen, and 51.82 g of nitrogen and a molecular weight of 81.09 g/mol.
a. What is the empirical formula of this compound?
b. What is the molecular formula of this compound? Show work for everything please
A.The empirical formula is CHN, with a ratio of 1:1:1.
B.This means that the molecular formula is 3 times the empirical formula, or C3H3N3.
How to find the molecular formula of a compound?A. To find the empirical formula, we need to determine the ratio of the elements in the compound. We can do this by converting the masses of each element to moles and dividing by the smallest number of moles:
Carbon: 44.45 g / (12.01 g/mol) = 3.70 mol
Hydrogen: 3.73 g / (1.01 g/mol) = 3.69 mol
Nitrogen: 51.82 g / (14.01 g/mol) = 3.71 mol
Smallest number of moles: 3.69
Ratios:
Carbon: 3.70 mol / 3.69 mol = 1.00
Hydrogen: 3.69 mol / 3.69 mol = 1.00
Nitrogen: 3.71 mol / 3.69 mol = 1.01
The empirical formula is CHN, with a ratio of 1:1:1.
B. To find the molecular formula, we need to find the smallest whole number ratio that gives us the molar mass of 81.09 g/mol. We can do this by dividing the molar mass by the molar mass of the empirical formula:
81.09 g/mol / (12.01 g/mol + 1.01 g/mol + 14.01 g/mol) = 81.09 g/mol / 27.03 g/mol = 3.00
This means that the molecular formula is 3 times the empirical formula, or C3H3N3.
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are body fluid compartments in a state of chemical equilibrium or disequilibrium? explain your answer and give an example.
The body fluid compartments in a state of chemical disequilibrium, for example, potassium ions in the cytoplasm of red blood cells, which are larger than the extracellular fluid.
The fluids in the body, namely water and electrolytes, are contained in two main compartments, namely intracellular fluid and extracellular fluid. Extracellular fluid is derived from body weight and interstitial fluid which consists of fluid in the serous cavities.
The body will perform homeostasis to maintain the stability and balance of osmotic fluids in the body. Fluids that come from food and drink enter the body and are distributed normally to all parts of the body through passive transport. However, some solutes are concentrated in several compartments, such as the cytoplasm of red blood cells, which have a potassium ion concentration that is 30 times greater than that of blood plasma. This causes a chemical imbalance, because it needs active transport which requires energy to fight the concentration gradient to achieve osmotic balance.
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Is there any material made of two or more substances that can be physically separated?
When two or more chemical substances (elements or compounds) are mixed together, a heterogeneous mixture is one in which the various components are easily distinguishable visually and physically.
What may be physically separated from a material that contains two or more substances?A mixture is a substance that can be physically separated from two or more other substances. There are numerous varieties of mixes.
What can't simply be separated from a combination of two or more substances be called?Homogeneous mixtures are those in which the composition is constant throughout. The mixture's components are difficult to separate. Solutions are another name for these kinds of mixes. A nice illustration of a homogenous combination is a cup of coffee.
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you mix 250 ml of 2.1 m hbr with 200 ml of 2.5 m koh . what is the ph of the resulting solution?a.12.7b.1.6c.12.4d.1.3
The statement that is given indicates that pH of the final solution is around 1.67. Hence option 'b' is correct.
How does pH work?An measurement of a substance's or solution's acidity or basicity. The pH scale ranges from 0 to 14. The pH value of Seven is considered neutral on this scale, meaning that it not acidic or basic. It becomes more acidic if the pH value is below 7, and more basic if the pH value is above 7.
A balanced chemical equation describes how HBr and KOH react.
HBr + KOH → KBr + H2O
number of moles of HBr and KOH
moles of HBr
= (2.1 M) * (0.25 L)
= 0.525 moles
moles of KOH
= (2.5 M) * (0.20 L)
= 0.50 moles
Use the stoichiometry of the balanced chemical equation to determine the number of moles of the salt produced in the reaction:
moles of KBr = minimum(moles of HBr, moles of KOH)
= 0.50 moles
Calculate the concentration of H+ ions in the solution by assuming that all the HBr is neutralized by the KOH.
[H+] = n_HBr / (0.25 L)
= 2.1 M
Now,
pH of the solution is given by-
pH = -log[H+]
= -log(2.1)
= 1.67
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true or false: monounsaturated and polyunsaturated fatty acids are typically liquid at room temperature. true false question. true false
Which molecule will engage in the strongest dispersion forces?
Iodine atoms are larger than those of the other halogens listed, making them the biggest molecule. It will have the best ability to engage in dispersion forces because it is the largest molecule.
Which alkane has the greatest forces of dispersion?Long chain length molecules have stronger London Dispersion Forces. Larger molecules have more places to attract other molecules, which is why this is the case. The C9H20 has a larger dispersion force than all the other alkanes on the list because of this.
How can the highest dispersion force be determined?The quantity of electrons in an atom or molecule tends to increase the strength of dispersion forces. The composition C8H18 will have the strongest dispersion forces since it contains a lot more electrons than any of the other compounds.
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a vincristine vial was found to have been broken and spilled. what should be used to clean up the spill?
If a vincristine vial is found to be broken and spilled then to properly clean the mess, a fully equipped chemo spill kit is used.
The chemo spill kit includes: Two pairs of nitrile gloves, a disposable safety gown, disposable shoe covers, a face shield covering the full face, 21 grams of solidifier, a scoop and scrapper, two wiper pads, a twist tie, and an ID tag.
Vincristine is a solution (liquid) that is administered into the vein. It is usually administered once a week. The drugs used during the process, the response of the body towards the drug and the type of cancer will determine the length of the treatment.
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Single, double & triple bond covalent bonds contained a)only one hybrid orbital. b)no hybrid orbitals c)only hybrid orbitals d)none of these
Covalent bonds only hybrid orbitals. The correct option is C
What is covalent bond?
Covalent bond is formed by the sharing of electrons between two atoms. Single, double, and triple covalent bonds refer to the number of electrons that are shared between the atoms.
In single covalent bonds, one electron from each of the participating atoms is shared, while in double covalent bonds, two electrons from each of the atoms are shared, and in triple covalent bonds three electrons are shared.
To form these bonds the atomic orbitals of the participating atoms must overlap to form hybrid orbitals. Hybrid orbitals are created by combining two or more atomic orbitals to create new orbitals with different shapes and energies. These hybrid orbitals are used to form the covalent bonds.
Therefore, covalent bonds contained only hybrid orbitals.
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what is the melting point of benzoic acid that you determined? how does this compare to the literature value?
The melting point determined of benzoic acid is in range of 121-123 °C.
Melting point determination of different elements helps to understand the purity of a substance. A pure substance has a melting range of one or two degrees but the range of melting of impure substances is much higher than the pure substance. The melting point also depends on the structure of the molecule.
A melting-point apparatus is a scientific instrument used to determine the melting point of a substance.
Pure benzoic acid has a melting point range of 121-123 °C. If benzoic were contaminated with an impurity, the melting point range might decrease and broaden to 117-120 °C.
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flooded, vented lead-acid batteries more than ? nominal may not use conductive metal cases, or metal racks where rack material is located within six inches of the tops of the battery cases.
Generally, lead–acid battery consists of two electrodes which are submerged in an electrolyte of sulfuric acid.
Basically lead–acid battery consists of two electrodes submerged in an electrolyte of sulfuric acid. The positive electrode is made up of grains of metallic lead oxide, while the negative electrode of the battery is attached to a grid of metallic lead.
The Lead acid batteries are usually found in a wide variety of applications including small scale power storage such as UPS systems, starting lighting and ignition power sources for automobiles, along with large, grid-scale power systems. There are 3 various types of lead-acid batteries which includes flooded acid, gelled acid, and Advanced AGM (Absorbed Glass Mat) batteries.
The question is incomplete so, I have answered according to general knowledge.
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be sure to answer all parts. what is the poh of 0.0157 m koh? is the solution acidic, neutral, or basic? acidic neutral basic
Answer:
Explanation:
Potassium hydroxide fully ionizes when dissolved in water according to the following equation:
K
O
H
→
K
+
+
O
H
−
Now, let's find the relationship between
K
O
H
and
O
H
−
1
:
1
ratio
⇒
[
K
O
H
]
=
[
O
H
−
]
=
6.7
×
10
−
3
M
In any aqueous solution,
[
H
3
O
+
]
and
[
O
H
−
]
must satisfy the following condition:
[
H
3
O
+
]
[
O
H
−
]
=
K
w
[
H
3
O
+
]
=
K
w
[
O
H
−
]
[
H
3
O
+
]
=
1.0
×
10
−
14
6.7
×
10
−
3
[
H
3
O
+
]
=
1.5
×
10
−
12
M
p
H
=
−
log
[
H
3
O
+
]
p
H
=
−
log
[
1.5
×
10
−
12
]
p
H
=
11.83
which of the following compounds is most soluble in water? select all that apply 1. c6h6 2. c6h5ch3. c6h5oh 4. c6h5cl 5. c6h5nh2
c6h5oh and c6h5nh2 are most soluble in water. The solubility of a substance in water is influenced by various factors, such as the polarity of the molecule and the strength of the intermolecular forces between the solvent (water) and the solute (compound).
Among the compounds listed, c6h5oh (phenol) and c6h5nh2 (aniline) are most soluble in water due to their polar nature and hydrogen bonding capability with water molecules. c6h5cl (chlorobenzene) is somewhat soluble in water due to its polarity, but less so than phenol and aniline. On the other hand, c6h6 (benzene) and c6h5ch3 (toluene) are nonpolar and have low solubility in water.
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Compared to clouds, fogs are?
Fog is a low-lying cloud of microscopic water droplets that is thick enough to impair horizontal visibility to under 1,000 meters.
What is fog?Fog is a low-lying cloud of microscopic water droplets that is thick enough to impair horizontal visibility to under 1,000 meters. The terms "ice fog" and "smoke fog" can also be used interchangeably to describe clouds containing both elements.
Depending on whether the obscurity is brought on by water droplets or solid particles, the phenomena is referred to as a mist or haze under comparable circumstances but with visibility more than 1,000 meters. Water vapor condenses on water vapor condenses that are constantly present in outdoor air to create fog.
Therefore, fog is a low-lying cloud of microscopic water droplets that is thick enough to impair horizontal visibility to under 1,000 meters.
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what is the term for an electrochemical signal that enables a neuron to communicate with other cells?
"Action Potential" is the name for the electrochemical signal that allows neurons to communicate with neighboring cells.
An electrochemical signal is what?Electrochemical signals are those that are sent by neurons. An electric potential which goes along length of the cell is produced by a neuron after it has been triggered by a stimulus of some kind. The "electro" component of electrochemical is this.
What is the neuron's electrochemical signal that is traveling along it?A neuron's membrane conducts an electrical charge known as an action potential, commonly known as a nerve impulse. It can be produced when chemical inputs from a neighbouring cell alter a neuron's membrane potential.
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calculate the molality of a 5.36 m aqueous solution of ethylene glycol ((ch2oh)2, 62.068 g/mol) given that the density of this solution is 1.0405 g/ml.
The molality of a 5.36 m aqueous solution of ethylene glycol ((CH₂OH)₂, will be 0.065 mol/kg.
molality = (moles of solute) / (mass of solvent in grams)
Since the density of the solution is given, we can calculate the mass of the solution and then the mass of the solvent.
mass of solution = volume × density = 1 L × 1.0405 g/mL = 1.0405 g
mass of solute = mass of solution - mass of solvent = 1.0405 g - 1 L × (density of solvent)
Since water has a density of approximately 1 g/mL, the mass of solvent is 1 L × 1 g/mL = 1 g.
mass of solute = 1.0405 g - 1 g = 0.0405 g
moles of solute = mass of solute / molar mass of solute = 0.0405 g / 62.068 g/mol = 0.00065 moles
molality = (moles of solute) / (mass of solvent in grams) = 0.00065 mol / 1 g = 0.065 mol/kg.
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__________ is always involved in hydrolysis reactions.
O None of the listed responses is correct.
O Water
O ATP
O H+ and OH-
O Synthesis
Water is always involved in hydrolysis reactions in the given options.
A hydrolysis reaction: what is it?The term "hydrolysis" refers to the breakage of chemical bonds by the addition of water and represents the reaction of an organic chemical with water to produce two or more new chemicals. Some occurrences of hydrolysis include the formation of hydronium and bisulfate compounds when sulphuric dissolves in water or a salt of a weak acid or base is mixed with water.
What is the term for sugar hydrolysis?Inversion is the mechanism of hydrolyzing sucrose to produce glucose and fructose. Invert sugar is the consequence of the hydrolysis of sucrose, which causes the sign of rotation to alter from dextro (+) to laevo (-).
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I need help with both questions on this picture please and thank you very much
1. The type of reaction shown in tge given reaction is a single displacement reaction.
The correct option is C.
2. The type of reaction shown in tge given reaction is a double displacement reaction.
The correct option is D.
What are single displacement and double displacement reactions?Single displacement reactions are reactions in which a radical or an element displaces or replaces another radical or element in a compound.
It is shown below as follows:
AB + C ---> AC + B
Double displacement reactions are reactions in which an exchange of radicals or elements occurs between two compounds when they are mixed together.
It is shown below as follows:
AB + CD---> AC + BD
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a student completes her titration and determines the volume of naoh needed to reach the endpoint of the titration. her data is shown below. taking outliers into account, should all four trials be used in the average calculation in each data set? data set 1 trial volume trial 1 23.11 ml trial 2 23.20 ml trial 3 21.22 ml trial 4 23.17 ml choose... data set 2 trial volume trial 1 46.44 ml. trial 2 46.24 ml trial 3 46.20 ml trial 4 46.39 ml choose...
If the data is considered to be accurate and consistent, all four trials in each data set should be used in the average calculation.
However, if one or more of the trials are significantly different from the other trials, it may be best to exclude those trials as outliers and only use the remaining trials in the average calculation.
In data set 1, trial 3 (21.22 mL) is significantly lower than the other trials, so it could be considered an outlier and excluded from the average calculation.
In data set 2, all of the trials are relatively close in value and within a reasonable range, so all four trials can be used in the average calculation.
It is important to carefully examine the data and consider any outliers in order to determine the most appropriate approach for calculating the average volume of NaOH needed to reach the endpoint of the titration.
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in a system of gas, if we double the temperature what happens to the energy of the particles?
The energy of particles increases whenever the temperature of the system increases.
What do you mean when you say "gas"?Any substance that is in the gaseous, or vaporous, phase of matter is referred to as a gas. When referring to matter that possesses the characteristics of a gaseous material, the term "gas" is also used to refer to the condition itself. The four fundamental states of matter are liquid, solid, plasma, and gas. Gases having no fixed volume or shape.
The characteristics of gas.In addition to being simple to compress and extend to occupy their containers, gases also take up a lot more space than that of the solids or liquids out of which they originate.
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Calculate the mass of copper(II) oxide produced. Show work!
Cu(OH)2 → CuO + H₂O
FW CuO 79.545 g
g CuO =
Please I need it quickly
Explanation:
Cu(OH)2 → CuO + H₂O
FW CuO 79.545 g
g CuO = 0.75 mol x 79.545 g/mol = 59.659 g
how does atomic excitation and de-excitation and the quantization of energy affect the emission spectra
Atomic excitation and de-excitation and the quantization of energy affect the emission spectra by determining the energy levels of an atom.
When an atom is excited, it absorbs a photon of a certain energy and moves to a higher energy level. When it de-excites, it emits a photon of a certain energy, which is related to the energy difference between the two energy levels.
As the energy levels of the atom are quantized, the energy of the photons emitted is also quantized. This results in an emission spectrum in which the photons emitted at different energies are seen as distinct lines or bands in the spectrum.
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How many liters are in 223.5G of C2H6 gas? A.7.4L B.116.4LC. 9.9LD. 15.4L
in 223.5G of [tex]C_2H_6[/tex] gas there are Option D. 15.4L. The conversion of 223.5 grams of [tex]C_2H_6[/tex] (Ethane) gas to liters involves the calculation of the molar volume of the gas at a specific temperature and pressure.
The molar volume of a gas is the volume occupied by one mole of the gas. The molar volume of a gas is proportional to its temperature and pressure, and at standard temperature and pressure (STP), it is 24.45 L/mol. To convert the mass of the gas to moles, we need to use the molar mass of [tex]C_2H_6[/tex], which is 30.07 g/mol. Finally, the number of moles can be multiplied by the molar volume to obtain the volume of the gas in liters. The final answer is 15.4 L.
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cinnamaldehyde is less polar than limonene because it has more carbon atoms. (True Or False)
False; cinnamaldehyde's higher carbon content does not make it less polar than limonene.
What is the purpose of cinnamaldehyde?An essential culinary flavour as well as a perfume odorant, cinnamonaldehyde. Additionally, it has been employed to get rid of mosquito larvae and deter adult mosquitoes. It is appropriate for organic agriculture since it occurs naturally.
Is cinnamon the same as cinnamonaldehyde?The flavor and aroma of the spice cinnamon are provided by a found naturally flavonoid called cinnamon aldehyde. It naturally exists in the bark of spice trees and other Cinnamomic species, including camphor and cassia. A clinical patch test can be used to determine someone's sensitivity to cinnamaldehyde.
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a ground state hydrogen atom absorbs a photon of light having a wavelength of 92.57 nm. it then gives off a photon having a wavelength of 388.8 nm. what is the final state of the hydrogen atom?
The final state of the hydrogen atom is a lower energy state, or a more stable state. A hydrogen atom in its ground state absorbs a photon of light with a wavelength of 92.57 nm, which excites it to a higher energy state.
When the excited hydrogen atom gives off a photon with a wavelength of 388.8 nm, it returns to a lower energy state.
The final state of the hydrogen atom can be determined by using the relationship between the energy of a photon and its wavelength, as described by Planck's equation:
E = hc/λ
where h is Planck's constant, c is the speed of light, and λ is the wavelength of the photon.
By comparing the energies of the absorbed and emitted photons, we can determine the difference in energy between the initial and final states of the hydrogen atom. If the final state has a lower energy than the initial state, it is a lower energy state, or a more stable state. If the final state has a higher energy than the initial state, it is a higher energy state, or an excited state.
Therefore, the final state of the hydrogen atom is a lower energy state, or a more stable state.
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when 39 grams of copper metal at 92.5 c is dropped into a 200 ml of water at 25 c the two subtances reach thermal equilibrium. which substance has
When a metal at a higher temperature is absorbed into the water, then at equilibrium the thermal heat lost by the metal is equal to the heat absorbed by the water.
When metal is dropped into water, the heat from the metal transfers to the water, and the water temperature increases. This will increase the average kinetic energy of the water molecules, while the energy of the atoms in the metal will decrease. Thus, the kinetic energy of metal decreases, while the kinetic energy of water increases.
The average particle speed of molecules increases with increasing temperature. Therefore, the average particle velocity of water molecules increases, while that of metal atoms decreases.
When metal is dropped into water, then at thermal equilibrium, the water temperature is the same as the metal temperature. Because the initial temperature of copper is higher than the initial temperature of the water, the water temperature will increase while the metal will decrease.
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ethylene glycol, c2h6o2, is infinitely miscible (soluble) in water. it is a nonelectrolyte that is used as antifreeze. what is the lowest possible melting point for engine coolant that is 29.7% ethylene glycol? the kf for water is 1.86 oc/m. enter your answer in units of degrees celsius.
The lowest possible melting point for engine coolant that is 29.7% ethylene glycol is -12.85° Celsius.
Depression in freezing or melting point can be given by using the formula:
[tex]T_{f} = i[/tex] × [tex]K_{f}[/tex] × [tex]m^{}[/tex], where:
'i' is the vant hoff factor, '[tex]K_{f}[/tex]' is the freezing point constant for water, and 'm' is the molality. as we know that, molality, m, can be given by the formula:
Molaltity = [tex]\frac{Mass-of -ethylene -glycol}{Molar-mass-of-ethylene-glycol * Mass-of-water-in-kg}[/tex]
Mass of ethylene glycol = 30 % of 100 g solution:
[tex]\frac{29.7}{100}[/tex] × [tex]100^{}[/tex] = 29.7g, rounding it off to 30 g
Mass of water = 100 - 30 = 70 g= 0.070 kg (1000g = 1kg)
Given, [tex]K_{f}[/tex], freezing point constant for water = 1.86° C/m
Thus, putting all these values in the above equation, we get:
[tex]T_{f}[/tex] = 1 × 1.86 × 30/ 62g/mol × 0.070
= 12.85° C (freezing point of 29.7% of ethylene glycol)
Now, calculating the lowest possible melting point:
Δ[tex]T_{f}[/tex] = [tex]T_{} - T_{f}[/tex] = 0 - 12.85 = -12.85° C
[ freezing point for water is 0° C]
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an iron nut and bolt are used to attach two zinc plates together on the underside of a boat. if this boat is to be used in the ocean, what might happen?
If the boat with the iron nut and bolt and zinc plates is used in the ocean, it is at risk of galvanic corrosion.
Is because the iron and zinc have different electrolysis voltages, so when a current passes through the water around the boat, it will strip away electrons from the zinc, leaving it vulnerable to corrosion.
To counteract this, a third metal, such as a sacrificial anode made of zinc, can be added to the circuit to act as a sacrificial anode, thereby protecting the boat from corrosion.
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322 l of hydrogen occupies a volume of 197 l at stp. if the initial temperature of the hydrogen was 27° c, what was its initial pressure?
The initial pressure of hydrogen gas when it occupies 197L at STP is 1405.34 mmHg.
Modified Ideal Gas Law:
P = nRT / V
0.000089 g/ml is the density of hydrogen gas.
Volume times Density equals 322000 x 0.000089, which equals 28.658 g of hydrogen gas.
Mass / Molecular Mass = 28.658 / 2 = 14.32 moles of hydrogen gas are considered one mole.
Add value to the equation as follows:
P equals [(14.32) (0.08206 L atm mol 1 K)] (310 K. / 197 L
P = 1.84 atm
P = 1.84 atm x 760.0 mmHg atm 1 = 1405.34 mmHg
Theoretically, a gas called an ideal gas is made up of several randomly moving point particles that are not in contact with one another. Since the ideal gas law, a condensed equation of state, and statistical mechanics can be used to analyse it, the ideal gas notion is advantageous.
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How many grams of oxygen is present in 36g of water?
Answer:
32 gm O
Explanation:
there are 16 gm of O in each 18 gm of water ....the other two grams are H
so there would be 32 gm of oxygen in 36 gm water
which solvent(s) (choices: water, a polar organic solvent, or a nonpolar organic solvent) would one use to dissolve each of the following compounds? describe in detail what must occur at the molecular level for each solute to dissolve. in particular, describe the specific interactions that are broken and those that are formed
The solubility of a compound depends on the nature of the solute-solvent interactions. Water is a polar solvent that dissolves polar and ionic compounds. Polar and nonpolar organic solvents dissolve like compounds.
Solvents for Dissolving CompoundsThe solubility of a solute in a solvent is dependent on the nature of the solute-solvent interactions. A polar solvent like water is effective in dissolving polar and ionic compounds by forming hydrogen bonds with the solute and separating the ions or polar molecules in the solution. Polar organic solvents, such as ethanol, can also dissolve polar and ionic compounds by forming hydrogen bonds. Nonpolar organic solvents, like hexane or toluene, are effective in dissolving nonpolar and hydrophobic compounds by surrounding the solute molecules and breaking the van der Waals forces holding them together in the solid state. In general, the solute must have a similar polarity as the solvent in order for it to dissolve, and the solvent must have the ability to disrupt the attractive forces holding the solute together in order to dissolve it.
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