Functions of a matrix phase:
1. For binding of the fibers so that the applied stress can be distributed.
2. Matrix phase protects the surface and inhibits the fibers from external damage.
3. Crack occurrence and crack spreading are reduced by separating the fibers
The matrix phase has the mechanical characteristics of good ductility, low elastic modulus, and relatively easy to mold whereas the fiber phase is able to withstand force and is also brittle, and stiff to improve overall toughness.
There must be a strong bond b/w fiber and matrix because :
1. To minimize the risk of failure due to fiber taking off.
2. To improve the stress progression from fiber to matrix and vice versa.
A polymer is a substance or material together with very large molecules referred to as macromolecules, composed of many repeating subunits. Due to their vast spectrum of homes, both synthetic and natural polymers play vital and ubiquitous roles in regular lifestyles.
Products made from polymers are all around us: garb made from synthetic fibers, polyethylene cups, fiberglass, nylon bearings, plastic bags, polymer-primarily based paints, epoxy glue, polyurethane foam cushion, silicone heart valves, and Teflon-covered cookware.
A number of the beneficial houses of diverse engineering polymers are excessive electricity or modulus-to-weight ratios, toughness, resilience, resistance to corrosion, lack of conductivity, color, transparency, processing, and coffee price.
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Consider the cyclohexane framework in a chair conformation, where carbon 1 has two substituents, X and Y. a. Label each position as axial or equatorial. b. On the same figure, label all positions that are gauche to the Y group on carbon 1. A bin may hold more than one label. Answer Bank x gauche quatorial 6 N 3 gauche
Gauche interactions are only possible between two substituents when their dihedral angle is equal to or less than 600.
Your provided image is somewhat not sufficient to hold two items in a bin, hence I am gonna use another image of the same question with white background to make sure you read it precisely!
Please also note that 'Y' on C-1 can have gauche interactions with substituents on C-2 & C-6 only, remaining all will just either axial or equatorial only!
Cyclohexene is a hydrocarbon with the chemical formula C6H10. This cycloalkene is a colorless liquid with a pointy scent. It's miles an intermediate in various industrial procedures. Cyclohexene isn't always very solid upon long-time garage with exposure to light and air because it forms peroxides.
Cyclohexane is an alicyclic hydrocarbon comprising a ring of six carbon atoms; the cyclic shape of hexane is used as a raw cloth within the manufacture of nylon.
Cyclohexene is used in a numerous variety of chemical syntheses. It's miles a building block that is utilized in Pharma, (eg, Clidanac, MK 346, Trandolapril, and Agchems which includes Propargite.
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how many grams of a 23.4% by mass naf solution is needed if you want to have 1.33 moles of naf? group of answer choices 239 g 31.1 g 13.1 g 55.9 g none of the above
The option(C) is correct, 55.9 g
What is mass?
The amount of matter in a substance or an object is quantified by its mass. Smaller masses can be measured in grammes, but the kilogramme (kg) is the standard SI unit for mass (g). You would use a balance to determine the mass.
What is gram?
The gramme (formerly gramme; SI unit sign g) is a unit of mass in the International System of Units (SI) equal to one thousandth of a kilogramme.
1.33moles=mass of NaF41.99g/molmass of NaF=1.33moles41.99g/molmass of NaF=55.85g.
Therefore, option(C) is correct, 55.9 g.
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a mixture of gases contains 12.0 grams of n2 and 15.0 grams of ar and has a total pressure of 1.32 atm. what is the partial pressure of n2?
12.0 grams od n2 & 15.0 gram of ar are present in a gas mixture with a pressure head of 1.32 atm. 0.704 atm is the pressure drop of n2.
How does pressure work?Another of the fundamental observable characteristics of the this phase of matter, pressure (P) is understood to be the force of all gas particulate interactions divided by the size of the wall.
What connections does pressure have to chemistry?Pressure has a major impact on every aspect of our life, from of the weather to flying. It is particularly crucial during chemical reactions. Chemists can compel chemical reactions to happen and hasten the transitions among solids, fluids, or gases by adjusting pressure.
Briefing:N=12.0, Ar=15.0
Total pressure=1.32
Partial pressure= n2
WN₂=12.0
WAr =15.0
nN₂=12/28 =0.42
nAr=15/40 =0.37
Xn₂=0.42/0.42+0.37 =0.53
Pn=Xn2×Ptotal
=0.53×1.32=0.69atm that ie nearly equal to 0.7atm.
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Does lithium and oxygen form an ionic compound?.
An ionic connection is created by lithium and oxygen. Each lithium atom contains one valence electron since it belongs to group 1A. This is lithium's Lewis valence electron structure.
What does a valence mean for an electron?Valence electrons are the electrons located in the atom's outermost shell, or energy level. One such example is oxygen, which has six valence electrons, two of which are located in the 2s subshell whereas four of which are located in the 2p subshell. An expression for oxygen's valence electron configuration is 2s22p4.
In layman's words, what does the term "valence electron" mean?The electrons that make up an atom's shell are known as valence electrons. Due to the fact that when two atoms engage, their outermost electrons make contact with one another first but are the ones that control how an atom will respond in a chemical reaction.
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Use the Ky values for weak acids to identify the best components for preparing buffer solutions with the given pH values. name formula ka phosphoric acid H3PO4 CH3COOH 7.5 x 10-3 1.8 x 10-5 acetic acid formic acid HCOOH 1.8 x 10-4 pH=1.9 __ pH=5.0 __ pH=__
By using the Ka values for given weak acids, the best component to prepare the buffer solution for pH 1.9 is H₃PO₄, pH 5.0 is CH₃COOH and for pH 3.9 is HCOOH.
Buffer solution is the solution which is prepared by the mixture of a weak acid and its strong base or vice versa. Its pH is calculated using Henderson-Hasselbalch formula which is
pH=pKa+log([base]/[acid])
Buffer solutions are working well within the range of pKa±1. Find out pKa value using the formula
pKa=-logka
For H₃PO₄
pKa=-log(7.5×10⁻³)
pKa=2.12
For CH₃COOH
pKa=(1.8×10⁻⁵)
pKa=4.74
For HCOOH
pKa=-log(1.8×10⁻⁴)
pKa=3.74
If we check the range of each solution, then for phosphoric acid(H₃PO₄) it will be in between 1.12-3.12. For acetic acid(CH₃COOH), it is in between 3.74-5.74 and for formic acid(HCOOH), it is in between 2.74-4.74.
Therefore, the best component to preapre the buffer solution for pH 1.9 is H₃PO₄, pH 5.0 is CH₃COOH and for pH 3.9 is HCOOH.
Your question is incomplete but the complete question would be that
Use the Ka values for weak acids to identify the best components for preparing buffer solutions with the given pH values. name formula ka phosphoric acid H3PO₄ CH3COOH 7.5 x 10⁻³ 1.8 x 10⁻⁵ acetic acid formic acid HCOOH 1.8 x 10⁻⁴ pH=1.9, pH=5.0, pH=3.9
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If the solvolysis of 1-bromoadamantane was carried out in 30% ethanol instead of 40% ethanol, would you expect the solvolysis rate to be faster, slower or unchanged?
A. Faster
B. Slower
C. Unchanged
If 1-bromoadamantane was solvolyzed in 30% ethanol as opposed to 40% ethanol, the process would be slower.
Why do you use the word "ethanol"?A renewable fuel called ethanol is produced form corn or other plant components. The United States uses ethanol extensively, and far more than 98% of fuel contains some ethanol. E10, which contains 10% ethanol and 90% gasoline, is the most popular ethanol blend.
Can people consume ethanol?Over 2 billion people use ethanol (also known as ethyl alcohol) day after day. Yeast, sugars, mixed starches are fermented to create this kind of alcohol. People have been using ethanol-based beverages like beer and wine for generations to alter their mood.
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What assets did best during the Great Depression?.
Smart investors are looking for more reliable assets to avoid losing wealth in today's market, which has unpredictable stock market conditions.
Even if our economy may have been improving, recent developments have had a significant impact on the market. History has shown how crucial assets that can withstand a depression are. When it comes to learning how to preserve wealth during a depression, the Great Depression ranks among history's greatest teachers.
During a market crash or depression, the two most crucial assets to have on hand are gold and cash.
During depressions, stocks and mutual funds are regarded as a significant bet. While safer assets are Treasury bonds, banknotes, and notes. The American government issuing these products. Once they reach maturity, they offer the buyer a fixed rate of interest.
Foreign bonds were once widely advocated as a depression-resistant investment option by numerous experts. This is not always a safe bet, as recent events have demonstrated. Due to the impact on the economies of all nations caused by global pandemics and other market instabilities, this has lost its appeal as a wise investment.
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which carbon-to-hydrogen mass ratio is possible for another compound composed only of carbon and hydrogen? which carbon-to-hydrogen mass ratio is possible for another compound composed only of carbon and hydrogen? 4.66 5.95 7.89 2.80
The carbon-to-hydrogen mass ratio possible for another compound composed only of carbon and hydrogen is 2.80; option D.
What are hydrocarbons?
Hydrocarbons are compounds that are composed of only carbon and hydrogen alone.
Hydrocarbons are usually obtained naturally from petroleum.
The common hydrocarbons are:
alkanes - these hydrocarbons have single carbon-carbon covalent bondsalkenes - these hydrocarbons have at least one double carbon-carbon covalent bond.alkynes - these hydrocarbons have at least one triple carbon-carbon covalent bond.Learn more about hydrocarbons at: https://brainly.com/question/1489747
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why the efficient operation of the citric acid cycle requires that the step catalyzed by citrate synthase has a large favorable free energy change.
The citrate synthase-catalyzed phase must have significant favorable free power change so that it can contribute to the production of high energy molecule, ATP, in order for citric acid cycle to function effectively.
What are some examples of molecules?A molecule is an object comprised of at least two atoms that are linked together chemically; the precise number of atomic nuclei that make up a molecule is known. One hydrogen atom gets joined to one halogen atom to form the molecule HCl(g), for instance. It is referred to as a diatomic molecule and has only two atoms.
What makes something a molecule?This term was meant to cover its original definition, which was "the smallest quantity of a component that nevertheless keeps the properties of that substance." "An atom is a body that can't cut in two; a dime is the smallest conceivable component of a specific substance," wrote James Maxwell in 1873 when defining atom and molecule.
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Draw the major organic product of the reaction shown. The starting material is a 5 carbon chain where carbon 2 has a hydroxy substituent and carbon 3 has two methyl substituents. The alcohol is heated to 170 degrees C in 85 percent H3PO4 to form the product.
The major organic product will be 3, 4 di-methyl pentane.
Chemical processes involving organic molecules are known as organic reactions. The fundamental kinds of organic chemistry reactions include redox reactions, oxidative degradation, pericyclic reactions, elimination processes, as well as substitution reactions.
In the given reaction the starting material is a 5 carbon chain where carbon 2 has a hydroxy substituent and carbon 3 has two methyl substituents. The alcohol is heated to 170 degrees C in 85 percent H3PO4 to form the product. The final product will be 3, 4 di-methyl pentane.
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Which of the following metals would form the strongest metallic bond?
lithium
magnesium
silver
cobalt
copper
iron
Cobalt will form strongest metallic bond among lithium, magnesium, silver, copper and iron.
The bond with the highest attraction between the particles is the strongest bond. The main factors that can influence the potency of the metal to metal attraction. First, the bond becomes stronger the more valence electrons a metal has. The additional electrons will strengthen the overall forces that attract the positive ions. The quantity of unpaired electrons affects how strong a metallic connection is. The bond strength increases with the amount of unpaired electrons. Cobalt exhibits greater bonding as a result of having the most unpaired electrons.
Hence, cobalt form strongest metallic due maximum unpaired electrons
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What volume of water would you add to 15. 0 ml of 12 m hcl to make it to 6. 0 m solution?.
30 ml volume of water have to add to 15. 0 ml of 12 m hcl to make it to 6. 0 m solution.
How do you calculate the volume of a solution needed?
Molarity, the most typical unit of concentration, is also the most helpful for calculating the stoichiometry of reactions in solution. The number of moles of solute contained in precisely 1 L of solution is known as the molarity, or M. In other words, it is the amount of millimoles of solute in exactly 1 mL of solution.Molarity = moles of solute / liters of solution.Anyone who has prepared instant coffee or lemonade before is aware that using too much powder results in a drink with a strong flavor and a high concentration of sugar, while using too little yields a diluted solution that may be difficult to differentiate from water. The amount of a solute present in a certain amount of solvent or solution is known as the concentration of a solution in chemistry.Given data
So first we set up the dilution equation: M1*V1=M2*V2
M: Molarity
V: Volume
We can set these equal in a dilution equation because Molarity is Miles per Volume, and by multiplying it by Volume we get Moles on each side. Moles of solute remain equal throughout a dilution since you are just adding water.
Next, we plug in our knowns:
(12.00M HCl)(15.00ml)=(6.00M HCl)(V2)
V2 = 15 X 12 / 6 = 30ML
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suppose you started your reaction with 215 mg 2-bromo-5-nitropyridine and an excess of benzylamine. what is the theoretical yield of product (mg)?
The theoretical yield of the product was found to be 0.215g.
define theoretical yield ?
The theoretical yield of a chemical reaction is the amount of product received from the full conversion of the limiting reactant. It is the quantity of product produced by a perfect (theoretical) chemical reaction, which is not the same as the amount produced by a laboratory reaction. Theoretical yield is often stated in grammes or moles.
Unlike theoretical yield, real yield is the amount of product generated by a reaction. Actual yield is often lower since few chemical reactions operate with 100% efficiency due to loss retrieving the product and other processes that diminish the product. Sometimes the actual yield exceeds the theoretical yield.
Perhaps as a result of a subsequent reaction that produces more product, or because the recovered product contains contaminants.
The ratio of actual yield to theoretical yield is commonly expressed as a percentage yield.
The theoretical yield of the product was found to be 0.215g.
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What property of substance is illustrated when a wet shirt dries up?.
Evaporation is a type of vaporization of a liquid that occurs from the surface of liquid into gaseous phase that is not saturated with the evaporating substance.
What is Evaporation ?On the surface of a liquid as it transitions into the gas phase, evaporation is a type of vaporisation that takes place. When the rate of evaporation of water is affected by humidity, for example, a high concentration of the evaporating substance in the surrounding gas significantly slows down evaporation.
The liquid water that was on the object evaporates to water vapour and diffuses into the air, which is why a wet object dries.Drying wet clothing causes the water molecules on the surface to acquire latent heat of vapourization, turn into vapour, and separate from the fabric's surface. Evaporation is the name of this process.Learn more about Evaporation here:
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What type of chemical is reacted with oxygen in a combustion reaction?.
Hydrocarbons are molecules consisting of both hydrogen and carbon reacts with oxygen in a combustion Reaction.
A combustion reaction occurs when oxygen gas (O2) reacts with certain types of compounds. We often call the other compound fuel. A more familiar term for combustion reactions is burning. The most common products of combustion reactions are carbon dioxide and water. Combustion is a high-temperature exothermic (heat releasing) redox (oxygen adding) chemical reaction between a fuel and an oxidant, usually atmospheric oxygen, that produces oxidized, often gaseous products, in a mixture termed as smoke. When a fuel is burned, oxygen in the combustion air chemically combines with the hydrogen and carbon in the fuel to form water and carbon dioxide, releasing heat in the process. Hydrocarbons reacts with oxygen as it has both hydrogen and carbon.
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A hydrocarbon is a compound that contains mostly carbon and hydrogen. Calculate the percent composition (by mass) of the following hydrocarbon: c9h20.
The percentages of carbon and hydrogen 84.37% and 15.693% respectively.
What is a molar mass ?The mass of a certain chemical element or chemical compound (g) divided by the amount of material is known as the molar mass (mol). By multiplying the standard atomic masses (in g/mol) of the component atoms, one may get the molar mass of a compound.
Molar mass of the compound is the mass of 1 mole of compound which is the sum of masses of each element.
[tex]C_9H_{20.[/tex]
Mass of 1 mole of compound= mass of carbon + mass of hydrogen+ = 9(12) + 20(1)= 128 g.
Percentage by mass of carbon = [tex]\frac{mass \ of \ the \ carbon}{mass \ of \ the\ molecule }[/tex]%
= 108/128 * 100
= 84.37 %
Percentage by mass of carbon = [tex]\frac{mass \ of \ the \ H}{mass \ of \ the\ molecule }[/tex] %
=20/128 *100 =15.63 %
The percentages of carbon and hydrogen 84.37% and 15.693% respectively.
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What is the structural formula of glucose?.
how many silicon atoms are in a computer chip with a mass of 5.68 mg? (hint: there are 1000 mg in a gram)
The silicon chip has [tex]1.22 * 10^{20}[/tex] silicon atoms.
The silicon chip used in an integrated circuit of a microcomputer weighs 5.68mg.
When weight is converted into grams, it gives [tex]5.68 * 10^{-3}[/tex]
To find the number of silicon atoms required, the weight must be divided with atomic weight as shown
[tex]5.68 * 10^{-3} / 28[/tex]
The obtained value must be multiplied with [tex]N_{A}[/tex] value which is [tex]6.023 * 10^{23}[/tex]
This gives as the numbers of silicon atoms present in the chip [tex]1.22 * 10^{20}[/tex]
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Hydrogen gas was collected in a burette in a water bath with a water height difference of 15. 0 cm. Please calculate the pressure in the burette if the atmospheric pressure in the room at that time was 765. 0 torr.
The pressure in the burette if the atmospheric pressure in the room at that time was 765.0 torr is 915 torr
How do I determine the pressure in the burette?The pressure in the burette can be obtained by using the following formula:
Pressure of gas = Atmospheric presure + pressure due to height
With the above formula, we can determine the pressure in the burette. This is illustrated below:
Pressure due to height = 15 cmHg = 150 mmHg = 150 torrAtmospheric pressure = 765.0 torrPressure in burette =?Pressure in burette = Atmospheric presure + pressure due to height
Pressure in burette = 765.0 + 150
Pressure in burette = 915 torr
Thus, the pressure in burette is 915 torr
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why is the intermolecular force is always stronger at the surface of a liquid than in the middle of the liquid
The intermolecular force is always stronger at the surface of a liquid than in the middle of the liquid because of the cohesive force present in the liquid molecule.
Surface tension of a liquid is the energy required to increase the surface area of a liquid by a unit of area. This surface tension in a liquid results from an imbalanced intermolecular forces, which is known as cohesive forces. The cohesive force is defined as the action of property of molecules, which sticks to one another due to the mutual attraction.
In the middle of the liquid, a molecule in the bulk liquid experience cohesive force. It experiences cohesive force with other molecules in the all directions. At the surface of a liquid, a liquid experiences net inward cohesive forces.
On the surface of a liquid, one molecule is not surrounded by other molecule. In the middle of a liquid, unbalanced attraction pull the molecules in a backward direction.
Therefore, the intermolecular force is always stronger at the surface of a liquid than in the middle of the liquid due to the cohesive force.
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Two posssible lewis structures for the molecule hcn are given. Determine the formal charge on each atom in both structures.
From the Lewis structures of the compound, the formal charge is -1 and rests on the nitrogen atom.
What is the formal charge?We know that the formal charge has to do with the charge that the specie appears to have. We have to look at the structure and consider the number of the electron pairs on each of the elements in the compound and then this would help us to be able to decide the formal charge that would be on each structure.
Hence, upon a careful consideration of the structures we can see that the formal charge that can be found on each of the structures for the hydrogen cyanide is -1 and we are now faced with deciding the atom that should carry this formal charge.
Given that the nitrogen atom is more electronegative than the carbon atom then the negative charge ought to rest on the nitrogen rather than on the carbon atom.
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Bromine is less reactive than fluorine because it is __________ for fluorine to gain an electron. What word completes the sentence?
Two or more than two atoms with different physical or chemical properties can not combine together to form an element. Therefore, bromine is less reactive than fluorine because it is easier for fluorine to gain an electron.
What is element?Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same.
Electronegativity is the property of an element to gain shared pair of electron. On going down the group of periodic table, electronegativity decreases. The reason for decreasing electronegativity is the increase in the size of the element. Since bromine is larger in size than fluorine, so bromine is less electronegative than fluorine. Bromine is less electronegative than fluorine.
Therefore, bromine is less reactive than fluorine because it is easier for fluorine to gain an electron.
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Which of the following would you least expect to find in CaCl2(aq)?
a. H2O molecules
b. CaCl2 molecules
c. Ca2+ ions
d. Cl− ions
Ions can be made by single element or covalently bonded group of elements. The covalently bonded group of elements is called polyatomic ions or polyatomic atoms. Therefore the correct option is option D.
What is Ions?Any species that contain charge whether it is positive charge or negative charge is called ions. The example of polyatomic ions are sulfate, phosphate, nitrate etc.
Cation is the species that loose electron and attain positive charge while anion is a species which gain electron and attains negative charge so when anion and cation combine in fixed ration the the overall charge of the molecule is zero that is molecule is neutral, the charge over cation and anion is also called oxidation state.
In CaCl[tex]_2[/tex](aq), CaCl[tex]_2[/tex] molecules, H[tex]_2[/tex]O molecules, Ca²⁺ ions and Cl⁻ ions will be present.
Therefore the correct option is option D.
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which of the following systems (i.e., pair of metals) would you expect to exhibit complete solid solubility? explain your answers. cr-v mg-zn al-zr
Get the vanadium and chrome atomic radius from the time. Cr, V, Ag, and Au are the substances that have perfect solubility in solids.
The total distance between an atom's nucleus and its electron's outermost orbital is known as the atomic radius or atomic radius . The average or typical distance between a chemical element's nucleus and the edge of its neighboring electron shells is what we refer to as the atomic radius of that element. The ionic radius is the distance an ion's nucleus must travel before its effect on the electron cloud is felt. An atom gains or loses electrons to produce ions. Covalent radii in a molecule are equal to half the distance between the nuclei of two atoms of the same element that are covalently bound to one another. Metallic radii: In a metallic lattice, a metallic radius is equal to one-half the internuclear space between two adjacent metal ions.
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common ionic compounds containing ions from which of the following groups are always soluble in water? select the correct answer below: the alkali metals the alkaline earth metals the halogens the transition metals
Common ionic compounds containing ions always soluble in water is Alkali metals (Group 1).
Alkali metals are the six chemical elements in a group called Group 1(a) which are in the far left column of the periodic table. The following are the six alkali metal elements, their properties and uses.
The Elements and Groups of Alkali Metals
The six elements that are included in the alkali metals are lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). If you look at the periodic table, there is one more element at the top, namely hydrogen (H). However, hydrogen does not belong to the alkali metals as it is a gaseous element. All the elements in this group have one electron in their valence shell, or a single valence electron.
The most common alkali metal is sodium. The amount is 2.8 percent. The easiest type of sodium to find is sodium chloride or what we know as salt (NaCl). Then the second most easily found element is potassium with an amount of 2.6 percent throughout the earth. On the other hand, the rarest are rubidium, lithium and cesium. Each only amounted to 0.01 percent, 0.002 percent and 0.0007 percent. Meanwhile, francium is radioactive and only exists in nature for a short time.
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What are the bulk properties of matter?.
State variables are used to characterize matter in bulk. Volume V, compression p, mass M, particle density, thermal energy Eth, and temperature T are some of these variables.
What does a matter mean in chemistry?Matter is everything that occupies space and appears to have mass; in the other words, matter seems to be the "stuff" which the cosmos is made of. The basic constituents of all stuff are called elements. They don't change into other elements through normal chemical processes and have distinct chemical and physical properties.
What does it imply of matter to use an example of matter?A substance that has a certain mass and volume over space and is commonly referred to as matter. Pencils, toothbrushes, water, and other items are examples of matters.
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if stars swells up to form to form a red giant ,they are
Answer:
A Red Giant
Explanation:
When the inward gravitational forces are less than the outward radiation pressure forces, the star swells and cools, thus turning red. High mass stars become red supergiants, low mass stars become red giants. The forces become unbalanced when the hydrogen begins to run out.
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g the remainder of the acids are called weak acids. how do weak acids differ from strong acids in solution? explain using the ph and conductivity behavior observed.
A strong acid is one that entirely ionizes in aqueous solution. When dissolved in water, it always loses a proton (H+). Acid that only partially ionizes in a solution is considered weak acid.
Only a small number of its (H+) atoms are released when it dissolves in water and it also can be explained by Conductivity .
What is Conductivity ?An electrolyte solution's conductivity is a gauge of how well it conducts electricity. In the SI, conductivity is measured in Siemens per meter.
Conductivity is a helpful indicator of water quality in general. Every body of water has a typical conductivity range that, once determined, can be used as a reference point for comparison with routine conductivity tests.
While electrical conductance is a characteristic of a specific electrical component, electrical conductivity is a quality of the substance itself (such as silver) (like a particular wire). The amount of voltage needed to for a given amount of electric current to flow is known as electrical conductivity.
What are weak acids ?An acid that partially separates into its ions in water or an aqueous solution is referred to as a weak acid. On the other hand, in water, a strong acid completely dissociates into its ions. While the conjugate acid of a weak base is also a weak acid, the conjugate base of a weak acid is also a weak base.
The ability of acidic and basic solutions to conduct electricity is referred to as strong and weak. Strong electrical conductivity indicates that an acid or base is a strong acid or base. A weak acid or base is one that conducts electricity only slightly.
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when collecting gases over water, the pressure of the pure gas being collected is called the
The pressure of a pure gas is referred to as the dry gas pressure when gases are being collected over water.
what is dry gas pressure?
It can be challenging to determine the mass of gases because of their low densities. It is usual practise to collect gas over water in order to measure the height of displaced water. To do this, insert a tube into an upside-down bottle whose opening is submerged in a bigger container of water. Dalton's Law must be applied to take water vapor into account when estimating the volume of gas that was collected.
The height of the water displaced in the tube can be used to calculate the overall pressure inside the pneumatic trough device, which is used to collect a gas over water.
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fourteen grams of nitrogen (atomic mass 14 amu) contains . group of answer choices 1 mole of nitrogen atoms 0.25 moles of nitrogen atoms not enough information is given 0.5 moles of nitrogen atoms
14 gram of nitrogen contains 0.5 mol of nitrogen.
We know that the no of mol= [tex]\frac{given mass}{molar mass}[/tex] , and nitrogen contains 2 N atom thus molar mass is 28. So no of mol is [tex]\frac{14}{28}[/tex] =0.5.
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