sanitizer solution measured if it reads between 100 and 400 ppm, the concentration is adequate.
Sanitizers based on iodine: Dip the strip for 60 seconds in the sanitizing solution, then remove and compare to the colour chart. If it reads between 12.5 and 25 ppm, the concentration is adequate.The two most common field measurement methods are test strips and titration kits, but following manufacturer instructions and understanding the limitations of any method is critical when interpreting results. A test strip is used to determine the concentration of sanitizer in parts per million (ppm). Three of the test sections on the six-in-one test strip are related to sanitizer level. Total bromine, total chlorine.
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what mass of oxygen is needed to react with 1.39 gal of methanol according to the balanced equation below? (1.00 gal
The mass of oxygen is needed to react with 1.39 gal of methanol is 6266.4g
What is mole in chemical reaction?The mole can be used to quantify the amounts involved in chemical processes as well as to identify the simplest formula of a molecule. The related idea of molarity is helpful for discussing reactions that occur in solutions. The amount of moles of a solute in a liter of solution is known as molarity (M).The quantity of stuff that has the same number of essential components as the number of atoms found in a pure sample of carbon weighing exactly 12 g is known as a mole. A mole is defined as the quantity of a substance that contains precisely 6.0221023 of the substance's elementary particles.Given:
methanol = 1.39 gal = 1.39 *3.79 =5.2681 L=5268.1 mL
density of methanol is 0.793 g/mL
weight of methanol = 0.793 * 5268.1 =4177.6 g
From the Balance Equation we know that 2 mole of methanol react with 3 mole of oxygen
since
mass of oxygen is needed to react = 4177.6/2 * 3 =6266.4g
complete Que :
What mass of oxygen is needed to react with 1.39 gal of methanol according to the balanced equation below? (1.00 gal - 3.79 L, and the density of methanol is 0.793 g/mL.) 2 CH2OH(1) + 3 02(g) 2 C02(%) + 4H2O
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g arrange the following groups of atoms in order of a). increasing size, b). ionization energy, c). electron affinity. a. rb, na, be b. sr, se, ne c. fe, p, o
Increasing Size of Atom ; Rb, Na, Be b. Sr, Se, Ne c. Fe, P, O
What is Atom ?In a chemical reaction, atoms cannot be formed or destroyed since they are indivisible units. The mass and chemical characteristics of each atom of a specific element are the same. Different elements' atoms have varying weight and chemical characteristics. Compounds are created when atoms combine in ratios of small whole numbers.
What do you mean by Electron affinity ?A neutral atom is simpler to remove an electron from than a positive ion, and a negative ion is even simpler. Therefore, O+>O>O is the proper order for IE, as lower IE denotes easier electron removal.
The definition of electron affinity is. when an electron is added to a neutral atom to create an anion, how much energy is released? When an electron is added to a neutral gaseous atom to create a negative ion, the atom's potential energy changes. This shift is known as the electron affinity.
The initial electron affinity is the energy produced when an electron is introduced to a gaseous atom that is in its ground state to create a gaseous negative ion. EA is the symbol, while kJ/mol is the unit.
What do you mean by Ionization energy ?The ionization energy measures an element's ability to participate in chemical processes that call for the creation of ions or the donation of electrons. It is often connected to the type of chemical bonds that exist between the components in the compounds they form. See also electron affinity and binding energy.
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For each of the following sets of atoms and ions, arrange themembers in order of increasing size.
Rank from smallest to largest. To rank items as equivalent, overlapthem.
Se, Te2-. and Se2-
Fe2+, Fe3+, and Mn2+
Ti4+, Sc3+, and Ca
Arranging the atoms and ions from the following sets in the rank from smallest to largest is as Se2-, Te2-, Sc3+, Fe2+, Fe3+ Ca, Ti4+, Sc3+ Mn2
A nucleus and one or more electrons connected to it make up each atom. The nucleus is composed of one or more protons and a sizable number of neutrons. Only the most common kind of hydrogen has no neutrons. Each neutral or ionized atom makes up a solid, liquid, gas, or type of plasma. The two types of fundamental particles that make up an atom are quarks and electrons. Ions are any atom or molecule having a net electrical charge. A proton's charge, which is generally believed to be positive, is equal to and opposite to the charge of an electron, which is supposed to be negative.
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granular fertilizer plus postemergence herbicide products are more expensive than sprayable postemergence herbicide products per unit area treated given that the active ingredients are the same in both products.
The statement 'granular fertilizer plus postemergence herbicide products are more expensive than sprayable postemergence herbicide products per unit area treated given that the active ingredients are the same in both products' is true.
When the fertilizer is in a granular form, it is more expensive than a fertilizer in a sprayable form. Fertilizers can be described as chemicals that are added to soil in order to improve the nutritional content of the soil.
In the granular form, a fertilizer and a herbicide will be present as two different products, the cost of both will be different and hence more expensive combined. In a sprayable form, the postemergence herbicide and the fertilizer can occur together inside a spray and hence is cheaper.
The question will correctly be written as:
granular fertilizer plus postemergence herbicide products are more expensive than sprayable postemergence herbicide products per unit area treated given that the active ingredients are the same in both products. True or false
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a sample of air at 7.50 atm is heated from 224k to 448k. if the volume remains constant, what is the final pressure?
if the volume remains constant, what is the final pressure is 3.75ATM.
What is pressure?
pressure is continues physical force exerted on or against an object by something in contact with.
Pressure is the force applied perpendicular to the surface of an object per unit area over which that force is the distributed. Gauge pressure by this is the pressure which relative to the ambient by its pressure. Various units are the used to express pressure.
Applying gas law formulae:
P1/T1 = P2/T2
Where P1 = initial pressure (atm) = 7.5
T1 = initial temperature in Kelvin(K) = 448
P2 = final pressure (atm) = unknown
T2 = final temperature in Kelvin(K) = 224
From the above Formula make P2 the subject of formula
P2 = P1T2/T1
P2 = 7.50*224/448
P2 = 1680/448
P2 = 3.75ATM
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What are the 4 representations of a function?.
Algebraically, verbally, visually, technically (using a table or table of data), graphically (using a graphical representation or continuous graph), and graphically (using a page summary) (using a mathematical model).
What sort of purpose does chemistry serve?Work is any form of energy transmission that can be explained by a change in the system's macroscopic physical parameters. For instance, energy can be used to increase a system's volume in response to external pressure.
What all chemical state roles are there?Examples of condition numbers or state functions are initial energy, enthalpy, or entropy because they quantitatively characterize an equilibrium point of a thermodynamic system, independent of how the scheme got there.
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the pattison company began operations on january 2, 2018, and appropriately uses the installment sales method of accounting. the following data are available for 2018 and 2019:
The deferred gross profit that would appear on the 2019 balance sheet is the amount of revenue that has been earned but not yet received as of the balance sheet date:
$180,000$200,000$285,000$225,000Gross profit deferred is 30% × ($600,000 – ($200,000 + $250,000)) + 40% × ($750,000 – 300,000)= $225,000.
How calculate the deferred gross profit?The deferred gross profit on the 2019 balance sheet is the amount of revenue that has been earned but not yet received as of the balance sheet date.
This can be calculated by taking the gross profit percentage for each revenue type and multiplying it by the difference between the total revenue and the amount of revenue already received.
In this example, that would be 30% of the difference between $600,000 and $200,000 + $250,000 plus 40% of the difference between $750,000 and $300,000, which equals $225,000.
Complete Question:The Pattison Company began operations on January 2, 2018, and appropriately uses the installmentsales method of accounting. The following data are available for 2018 and 2019:
2018 2019
Installment sales $600,000 $750,000
Cash collections from:
2018 sales 200,000 250,000
2019 sales 300,000
Gross profit on sales 30% 40%
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How many electrons does hydrogen need a full valence shell?.
There is one electron of hydrogen that needs a full valence shell.
Hydrogen can either share electrons or lose electrons and have a full or empty outer shell, so it can also form ionic bonds. Hydrogen can donate its lone electrons to chemicals such as fluorine and chlorine which have seven electrons in their outermost shell.
The outermost shell of an atom is called the valence shell. A complete valence shell means that the valence shell is fully occupied forming a stable octet. Halogens such as helium, neon, argon and xenon. It has a completely filled valence shell. A valence electron is an electron in the outermost shell of an atom, and the atomic number of hydrogen is 1. So the total number of electrons is 1 and the valence electron is also 1.
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A mixture of nitrogen, oxygen, fluorine, and neon are in a container which has a tiny, tiny pinhole leak. Which element leaks the slowest from the container?.
A mixture of nitrogen, oxygen, fluorine and neon are in a container which has a tiny, tiny pinhole leak. The slowest element to leave the container is fluorine.
Gas output is expressed as:
Rate ∝ 1 / √M
rate of effusion is inversely proportional to the square root of the molecular weight.
molecular weight of nitrogen = 14amu
molecular weight of oxygen = 16 amu
Molecular weight of fluorine = 19amu
The rate of effusion with increasing molecular weight. Fluorine is therefore the element that escapes the slowest from the container. There is a mixture of nitrogen, oxygen, fluorine and neon inside the container with a very small leak. elements fluorine are the slowest to leak out of the container
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the contract is unacceptable in its current form; revision is required. please revise the contract so it can be forwarded to the vice president. this contract is a mess; fix it before the vice president sees it.
Please update the contract in accordance with the provided information so that it can be sent to the vice chairman.
What is the most recent short definition?The pace at which electrons pass a certain point in a fully functional electrical circuit is referred to as rate. Fundamentally, current is the same as flow. The ampere (AM-pir), also called to as an amp, is the standard measurement unit used throughout.
How would you characterize electric current?When describing how much electrical flows through a network and exactly how it flows inside of an integrated device, the term "electric current" is often employed. It is measured in amperes (A). The ampere number increases with the amount of flow of energy all across circuit.
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what volume (in ml) of a 0.203 m naoh solution is needed to neutralize 25.0 ml of a 0.188 m h2so4 solution?
25.0 ml of a 0.188 m h2so4 solution must be neutralized with 46.3 ML (in ml) of a 0.203 m sodium hydroxide solution. In the process of making chlorine, sodium hydroxide is created as a byproduct.
It is crystalline, colourless, and solid in its purest form. These sodium cations and hydroxide anions make up this extremely water-soluble molecule known as sodium hydroxide. Chemical element chlorine has the symbol Cl and atomic number 17. It is the second-lightest halogen, and although it is between fluorine and bromine on the periodic table, most of its properties fall somewhere in the middle. Is called chlorine.
H2SO4 millimoles equal 0.188*25.0 = 4.70mmol NAOH millimoles equal 4.70*(2/1) = 9.40mmol in a volume of 0.203M NAOH equals 9.40*(1/0.203) = 46.3 ML.
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I am currently enrolled in AP Chemistry and I want to make sure I am completing this assignment correctly. Any help is greatly appreciated and will leave a positive review! 1) Identify the type(s) of motion that individual molecules can undergo in a molecular solid. 2) When the temperature of a solid copper pipe increase, does the motion of the free electrons increase, decrease, or remain the same? 3) Draw particulate representations of a molecular liquid at a low temperature and a high temperature. Use arrows to represent velocity vectors. 4) Draw particulate representations of molecular gas at a low temperature and a high temperature. Use arrows to represent velocity vectors. 5) Draw a particulate representation of a 1.0 L sample of molecular gas in a cylinder. Draw a second particulate representation of the same sample of gas after it has been compressed to 0.5 liters. Assume that the temperature remains the same. Use arrows to represent velocity vectors. 6) Draw particulate representations that show the differences between a solid, liquid, and gas. Particle motion, intermolecular forces, and overall volume must be highlighted in the representations.
In a molecular solid, individual molecules can undergo various types of motion, including translational motion (movement from one point to another), rotational motion (spinning around a fixed axis), and vibrational motion (oscillating or shaking about a fixed position).
When the temperature of a solid copper pipe increases, the motion of the free electrons within the copper atoms will also increase. This is because an increase in temperature corresponds to an increase in the kinetic energy of the particles in a substance, which leads to an increase in their motion.
In a molecular liquid at a low temperature, the individual molecules will be moving relatively slowly, with relatively low velocities. The arrows representing the velocity vectors of the molecules will be relatively small and widely spaced.
In a molecular liquid at a high temperature, the molecules will be moving more quickly, with higher velocities. The arrows representing the velocity vectors of the molecules will be larger and more closely spaced.
In a molecular gas at a low temperature, the individual molecules will be moving relatively slowly, with relatively low velocities. The arrows representing the velocity vectors of the molecules will be relatively small and widely spaced.
In a molecular gas at a high temperature, the molecules will be moving more quickly, with higher velocities. The arrows representing the velocity vectors of the molecules will be larger and more closely spaced.
In a particulate representation of a 1.0 L sample of molecular gas, the individual molecules will be spaced relatively far apart from each other, with relatively low velocities. The arrows representing the velocity vectors of the molecules will be relatively small and widely spaced.
In a particulate representation of the same sample of gas after it has been compressed to 0.5 liters, the molecules will be spaced much closer together, with higher velocities. The arrows representing the velocity vectors of the molecules will be larger and more closely spaced.
In a particulate representation of a solid, the individual particles will be closely packed together in a regular, ordered arrangement. The particles will be vibrating in place, with little overall movement or change in position. In a particulate representation of a liquid, the particles will be more loosely packed together, with more freedom of movement.
The particles will be moving and flowing past each other, with relatively low velocities. In a particulate representation of a gas, the particles will be spaced far apart from each other, with a large amount of empty space between them. The particles will be moving quickly and randomly in all directions, with relatively high velocities.
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The scale factor of a large swimming pool to a small swimming pool is 0. 12. The large swimming pool can hold 15,000 m3 of water. How much water can the small swimming pool hold?.
The small pool can hold 25.92 m³ of water.
Let
x=the volume of the small swimming pool
y=the volume of the large swimming pool
z= the scale factor
we know that
The volume of the small swimming pool is equal to the scale factor elevated to the cube multiplied by the volume of the large swimming pool
x=z³y
If the scale factor of the small pool to the large pool is equal to 0.12, the ratio of their volumes should be equal to 0.12³ or equal to 1.728 x 10⁻³. We multiply this value by the given volume of the large pool to get the volume of the small pool.
volume of small pool = (1.728 x 10⁻³)(15,000 m⁻³)
volume of small pool = 25.92 m³
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what total energy (in kj) is contained in 1.00 moles of photons, all with a wavelength of 0.00000187 m? your answer should have three significant figures and no units.
The total energy contained in a given number of photons depends on the energy of each photon. The energy of a photon is directly proportional to its frequency and inversely proportional to its wavelength.
To find the energy of a photon with a given wavelength, you can use the formula E = h * c / lambda, where E is the energy of the photon, h is the Planck constant (6.62607015 x 10^-34 J*s), c is the speed of light (2.99792458 x 10^8 m/s), and lambda is the wavelength of the photon.
In this case, the wavelength of the photon is 0.00000187 m, so the energy of a single photon would be: E = 6.62607015 x 10^-34 J * s * 2.99792458 x 10^8 m/s / 0.00000187 m = 1.97639 x 10^-19 J.
If we have 1.00 moles of photons, each with an energy of 1.97639 x 10^-19 J, the total energy contained in the photons would be the number of photons times the energy of each photon. One mole of any substance contains 6.02214076 x 10^23 particles, so 1.00 moles of photons would contain 6.02214076 x 10^23 photons.
To find the total energy contained in 1.00 moles of photons with a wavelength of 0.00000187 m, we can multiply the number of photons by the energy of each photon: 6.02214076 x 10^23 photons * 1.97639 x 10^-19 J/photon = 1.1933 x 10^5 J.
To convert this to kJ, we can divide by 1000 to get 119.33 kJ. Rounded to three significant figures, the total energy contained in 1.00 moles of photons with a wavelength of 0.00000187 m would be 119 kJ.
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predict the stronger acid in each pair: part a hno3hno3 hno2hno2 part b h2sh2s h2oh2o
The more potent acid in each pair is HNO3. nitric acid totally dissociates in its aqueous solution.
What purposes do nitric acids serve?Ammonium nitrate, a crucial component of fertilizers, is created using nitric acid. Additionally, it is used to oxidize metals and to make explosives like trinitrotoluene (TNT) and nitroglycerin.
How is nitric acid produced?Nitric acid is created when water and nitrogen dioxide (NO2) react. Normally, the oxygen in the air reoxidizes the nitric oxide created by the process to create more nitrogen dioxide. Making almost pure nitric acid is possible by mixing sulfuric acid with a nitrate salt and heating the mixture in an oil bath.
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2. after work-up, the product of the wittig reaction was recrystallized from hot isopropanol. you were told to do a gravity filtration using a heated stemless funnel if the solution appeared cloudy. what was the likely identity of compound that caused the cloudiness?
The likely identity of compound that caused the cloudiness is because the triphenylphone oxide is the by product in the witting reaction . the likely identity was HCl.
The ethanol does not allow the DNA to dissolve in it. so, the more cold the ethanol the less soluble will be the DNA. the isopropanol is the simplest secondary alcohol. The likely identity is HCl and some of the other gas. The hot iso propanol was use instead of cold isopropanol because of the hot gravity filtration is produce more consistence crystal.
The iso propanol is the colorless and the flammable organic compound.
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a compound has an m peak with relative intensity 84% and an m 2 peak with relative intensity 28%. what is likely present?
An compound m peak has a relative intensity of 84%, and its m 2 peak is 28% stronger. It's probably chlorine. Chemical element chlorine has the symbol Cl and atomic number 17.
It is the second-lightest halogen, and although it is between fluorine and bromine on the periodic table, most of its properties fall somewhere in the middle. At room temperature, chlorine is a yellow-green gas. It is called chlorine.
A compound is a substance created when two or more chemical elements are chemically bonded together. Ionic and covalent bonds are the two most common types of bonds that hold elements in a compound together.
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order the intermolecular forces (dipole-dipole, london dispersion, ionic, and hydrogen-bonding) from weakest to strongest . order the intermolecular forces (dipole-dipole, london dispersion, ionic, and hydrogen-bonding) from weakest to strongest . dipole-dipole, london dispersion, ionic, and hydrogen-bonding london dispersion, dipole-dipole, hydrogen-bonding, and ionic hydrogen-bonding, dipole-dipole, london dispersion, and ionic dipole-dipole, ionic, london dispersion, and hydrogen-bonding london dispersion, ionic, dipole-dipole, and hydrogen-bonding
London dispersion < dipole-dipole < hydrogen-bonding < ionic is the correct order of intermolecular forces.
The forces that promote interaction between the solute and solvent molecules and impact their solubility are known as inter-molecular forces of attraction. They were generally categorized as follows:
Ionic: This is the strongest force of attraction between positively and negatively charged atoms or molecules, called ions.
Hydrogen bonds are the forces of attraction that exist in molecules where a hydrogen atom is directly connected to an electronegative atom, such as an oxygen, nitrogen, or fluorine atom.
Dipole-dipole: These occur between polar molecules, which are molecules with a persistent dipole.
The weakest intermolecular force, known as dispersion or London forces, develops in non-polar molecules when an immediate or transient dipole forms.
The intermolecular forces are arranged as follows, from weakest to strongest:
London dispersion < dipole-dipole < hydrogen-bonding < ionic.
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a(n) is a homogenous volume of air defined based on its temperature, and moisture characteristics.
An air mass is a homogenous volume of air defined based on its temperature, and moisture characteristics.
What is air mass ?An air mass is a volume of air whose temperature and humidity are specified. Many hundreds or thousands of square miles are covered by air masses, which adjust to the properties of the land underneath them. Latitude and their continental or marine source regions are used to categorize them.
When the atmosphere comes into touch with a sizable, uniform land or sea surface for a period of time long enough for it to absorb the surface's temperature and moisture characteristics, an air mass is created. Major air masses on Earth have their origins in polar or subtropical latitudes.
Thus, An air mass is a homogenous volume of air defined based on its temperature, and moisture characteristics.
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Does hydrogen have 1 or 2 valence electrons?.
Hydrogen has a single atomic nucleus. Therefore, there will be one electron overall and one valence electron.
Chemistry's concept of valence, sometimes written as valency, refers to an element's ability to mix with a certain number of other atoms. The phrase, which was first used in 1868, can describe both the general power of the combination of an element as well as the numerical magnitude of that power of combination.
A significant issue for 19th-century chemists was explaining and organizing valence. The focus of the majority of the work was on developing empirical guidelines for figuring out the valences of the elements because there was no good hypothesis explaining their origin. Characteristic valences for the elements were calculated based on how many hydrogen atoms each one of their atoms might mix with.
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Can someone help me out with this please
Answer:
A is the correct answer
Explanation:
Identify the element with the highest standard free energy of formation.
Group of answer choices
Mn(s)
All elements in their standard states have a value of zero.
K(s)
Ba(s)
Mg(s)
The element with the highest standard free energy of formation is All elements in their standard states have a value of zero.
The correct answer is All elements in their standard states have a value of zero.
What is free energy of formation?The standard free energy of formation of a substance is defined as the free-energy change which results when 1 mol of substance is prepared from its elements at the standard pressure of 1 atm and a given temperature, usually 298 K.
At 25^∘ C , the free energy of formation of H2O (l) is - 56700 cal/mol while that of its ionization to H^ + and OH^ - is 19050 cal mol^-1.
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which of the following is not a correct way in which the reproductive system hormones interact with other body systems
The interaction of reproductive system hormones with other body systems that estrogen activates is incorrect.
What distinguishes the reproductive system from other bodily organs?In contrast to other body systems, the reproductive system works to secure the survival of an entire species, whereas all other body systems work to ensure the life of the individual.
What part do hormones play in the male and female reproductive systems, in your opinion?Sexuality and fertility are influenced by the three primary reproductive hormones, estrogen, testosterone, and progesterone. Pregnancy, puberty, menstruation, menopause, sex drive, sperm production, and other processes are all controlled by them. These hormones are made in the testes and ovaries in females.
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question:-
which of the following is not a correct way in which the reproductive system hormones interact with other body systems i.e estrogen, testosterone, and progesterone?
acetic acid is a covalent compound but, when dissolved in water, it is a weak electrolyte. how would you explain this phenomenon?
Acetic acid is a covalent compound but, when dissolved in water, it is a weak electrolyte. It is a vulnerable electrolyte for the reason that compound does now no longer dissociate absolutely to shape ions.
Electrolytes are materials which could behavior power while they may be located in solution. This is because of their capacity to provide charged debris in solution.
These debris are referred to as ions. Acetic acid is a vulnerable acid because it partly dissociates in water ensuing withinside the formation of acetate and hydronium ions. It is a vulnerable electrolyte for the reason that compound does now no longer dissociate absolutely to shape ions.
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What happens when unbalanced forces act on an object at rest?.
An item will move and its velocity will vary when unbalanced forces are applied to it while it is at rest. Keep in mind that a change in velocity can result from changes in either direction or speed.
When a force acts on an object, the thing changes size or shape, begins to move, stops moving, accelerates, or decelerates. When two objects interact, they each apply a force that is equal in magnitude but directed in the opposite direction with some velocity.
An object in motion can also be stopped by unbalanced forces. Wind resistance, gravity, and friction are the three basic forces that slow moving objects down. Balanced forces are equal forces acting in opposing directions.
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calculate the moles of co2 produced when 3.12 moles of c4h10 are allowed to react with 12.69 moles of o2.
The statement above may result in 7.82 moles if carbon dioxide being produced.
What produces the most CO2?The use of fossil fuels including coals, natural gas, or oil is one of the major sources of dioxide emissions, accounting for 87 percent of all emissions produced by humans. The burning of fossil fuels is the major human emission source of carbon dioxide.
Briefing:The chemical process looks balanced like this:
2C₄H₁₀(g)+13O₂(g)→8CO₂(g)+10H₂O(g)
Since 1 mole if butane combines using 13 moles or oxygen in the reaction described above, 3.5 moles for butane will need:
Required moles of O₂=3.12×13mol
Required moles of O₂=40.5mol
moles of O₂=8×12.69÷13
moles of O₂=7.80mol
As a result, 7.80 moles if carbon dioxide will be produced.
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a 2mol sample of f2(g) reacts with excess naoh(aq) according to the equation above. if the reaction is repeated with excess naoh(aq) but with 1 mol of f2(g), which of the following is correct? responses
When 1 mol of F₂₍g₎ react with excess of NaOH₍g₎, then the amount of OF₂₍g₎ produced is halved.
What is NaOH?NaOH(sodium hydroxide) is very corrosive. It is generally used as a solid or a 50% solution. It is used in bar soaps and detergents.
Let us assume a balanced reaction that occurs when F₂ with NaOH 2F₂₍g₎ + 2NaOH₍aq₎ ⇒ OF₂₍g₎ + 2NaF₍g₎ + H₂O₍l₎
Moles of OF₂ and NaF obtained from 2moles of F₂, using molar ratios derived from the balanced chemical reaction
2mol F₂ × 1mol OF₂ ÷ 2mol F₂ = 1mol OF₂
2mol F₂ × 2mol NaF ÷ 2mol F₂ = 2mol NaF
Now, let's compare with moles of OF₂ and NaF obtained from 1 mol of F₂, again using the same molar ratios derived from the balanced chemical equation.
1mol F₂ × 1mol OF₂ ÷ 2 mol F₂ = 0.5 mol OF₂
1mol F₂ × 2mol NaF ÷ 2 mol F₂ = 1mol NaF
Since, we have half the amount of F₂, we obtain half the amount of the products, then the only right option is that the amount of OF₂₍g₎ produced is halved.
When 1 mol F₂ reacts with excess of NaOH, the amount of OF₂ produced is halved.
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discuss how spectroscopy may be used to determine the concentration of some molecule. what must be known about the molecule?
A spectrophotometer is a device that counts the number of photons that are absorbed after they have passed through a sample solution. The concentration of the molecule must be known.
The quantitative assessment of a material's reflection or transmission qualities in relation to wavelength is the focus of the branch of electromagnetic spectroscopy known as spectrophotometry. An analytical tool called a spectrophotometer is used to determine the emission or reflection of visible light, UV light, or infrared light objectively. Spectrophotometers calculate intensity as a function of light source wavelength.
The amount of solute in a specific amount of solution determines a concentration of the molecule. The number of moles of solute in 1 L of solution, or molarity, is used to express concentrations.
In chemistry, there are four different forms of concentration of the molecule: volume concentration, number concentration, molar concentration, and mass concentration.
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2 al(s) 3 br2(l) ----> 2 albr3(s) suppose the actual yield of the reaction is 42.0 grams of albr3 and the percent yield is 75%. what is the theoretical yield?
By multiplying the theoretical yield, or the amount that the process should theoretically produce, by 100.
What do you mean reaction?Resistance or resistance to a force, impact, or movement is a reactionary act, process, or occurrence. especially: a reaction to the a particular treatment, condition, or stimulus; inclination toward a past but typically antiquated political or social system or policy.
What is meaning of reaction in chemistry?One or more chemicals, also referred to as reactants, are transformed into one or more other substances, often referred to as products, in a chemical reaction. Substances are built up of active compounds or chemical elements. Burning is one of the five basic types of chemical reactions, along with combining, breakdown, only one, double-replacement, and replacement.
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a student has 100. ml of 0.20 m hcl solution. she takes 5.0 ml of this solution and adds it to 10.0 ml of water. she then takes 3.0 ml of this new solution for an experiment. what is the concentration of this solution?
The concentration of the solution is .10M
What is dilution equation?Here given,
V1 = 5.Oml
M1 = .20M
V2 = 10.0ml
We have to find M2
For determining a missing dilution equation value, where M1 and M2 are the molarities of the solutions, expressed in mol/L or M, and V1 and V2 are the volumes of the solutions.
By applying V1M1 = V2M2
By substituting values,
(5.0 ml)(0.20 M) = (10.0 ml) (x M)
x = (5.0)(0.20)/10.0
x = 0.10 M
The fact that one begins with 100. ml and ends with 3.0 ml has no bearing on the final concentration. It would influence the total number of moles of HCl present but not the concentration.
Therefore the concentration of solution is .10M.
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