A type of equal temperature at a specific period or date is represented by an isotherm on a geographic map. In terms of thermodynamics, a curve on a Pressure-Volume diagram at constant temperature is what we mean. We can actually see from the graph that the range is: 10 Fahrenheit degrees
What is the temperature?A system's temperature can be used to calculate its average kinetic energy. As the particle's velocity rises, the system's kinetic energy also begins to grow, which raises the temperature of the system. Heat is the energy that is transmitted when two bodies having different surface temperatures interact. When two bodies of different temperatures were kept in contact, the direction for heat transfer is dependent on the temperatures. SI units use the kelvin (K).
How do we measure temperature?We use thermometers to monitor temperature; chances are, you have one of them in your home for when you're feeling under the weather. Mercury-filled thermometers were once common, but they are no longer used because of the risk of mercury leakage or thermometer failure.
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if the atomic radius of gold is 0.144 nm, calculate the volume of its unit cell in cubic meters. (Note: Crystal structure of gold: FCC)
If the atomic radius of gold is 0.144 nm, the volume of its unit cell in cubic meters is the 6.76 × 10⁻²⁹ m³.
Given that :
Atomic radius = 0.144 nm
The crystal of the gold if FCC.
The volume expression is given below :
The edge length is , a = 2√2r
V = 16√2r³
r = 0.144 nm = 0.144 × 10⁻⁹ m
V = 16√ 2 × 0.144 × 10⁻⁹
V = 6.76 × 10⁻²⁹ m³.
Thus, The volume is the unit cell with the atomic radius of the gold ia 0.144 nm is 6.76 × 10⁻²⁹ m³.
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the equilibrum constant Kp for teh reaction SO2 NO2 --> SO3 NO is 3 find the pressure of NO2 that must be added to 2.4 atm of SO2 in order to form 1.2 atm of SO3 at equilibrium
The equilibrium constant Kp for the reaction :
SO₂ + NO₂ ⇄ SO₃ + NO is 3. The pressure of the NO₂ is 0.18 atm.
The reaction is
SO₂ + NO₂ ⇄ SO₃ + NO
Kp = [ SO₃ ] [NO] / [SO₂ ] [ NO₂ ]
The equilibrium constant ,Kp = 3
P [ SO₂] = 2.4 atm
P [ SO₃ ] = 1.2 atm
P [NO] = 1.1 atm
Kp = [ SO₃ ] [NO] / [SO₂ ] [ NO₂ ]
3 = 1.2 × 1.1 / 2.4 [ NO₂ ]
3 = 1.32 / 2.4 [ NO₂ ]
[ NO₂ ] = 1.32 / 7.2
[ NO₂ ] = 0.18 atm
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In a certain gaseous reaction , 2 mol NO react with 1 mol O 2 :; 2 NO(g)+O 2 (g) longrightarrow2 NO 2 (g) a Given the same conditions of temperature and pressure , what volume of O_{2}(g) would react with 4 L NO gas ? b. How might chemists use their knowledge of molar volumes to monitor the progress of this reaction ?
The chemical reaction of metallic compound vapors is utilized in the gaseous reaction method.
This H2 O2 --> H2O reaction is what kind of reaction?When two or more reactants come together to create one product, the reaction is called a "synthesis reaction."Here, the 4 hydrogen atoms from the two molecules of hydrogen gas (H2) and the two oxygen atoms from the single molecule of oxygen gas unite (O2 ).The only product produced in this process is water, sometimes known as H2O H 2 O.Combination reactions are those that take place when two or more reactants combine to create a single product.Synthesis reactions, or combination reactions, are another name for them.In the equation below, for instance, hydrogen and oxygen can combine to make water.2H2 + O2 → 2H2OFor the sake of this activity, you can ignore the numbers in the equations.To learn more about reaction refer
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which substance is the limiting reactant when 16.0 g of sulfur reacts with 10.0 g of oxygen and 12.0 g of sodium hydroxide according to the following chemical equation?
b) NaOH(aq) is the limiting reactant when 16.0 g of sulfur reacts with 10.0 g of oxygen and 12.0 g of sodium hydroxide.
How to find the limiting reactant of a given chemical reaction?Initial amount in the reaction:
sulfur S: 16 x 1/32 => 0.5 mol
oxygen O : 10 x 1/16 => 0.625 mol
NaOH : 12 x 1/40 => 0.3 mol
Amount used in the reaction:
0.5 mol of S
oxygen : 0.5 x 3 mol O/2 mol S => 0.75 mol
NaOH : 0.5 x 4 mol NaOH/ 2 mol S => 1 mol
Amount left in the reaction:
Sulfur : 0
Oxygen : 0.125 mol
NaOH : -0.7 mol
Since we cannot have a substance in a negative quantity, sodium hydroxide is the limiting reactant in this scenario (NaOH).
What does "limiting reactant" refer to?The reactant that is consumed first in a chemical reaction, also known as the limiting reactant (or limiting reagent), limits the amount of product that can be produced.
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which substance is the limiting reactant when 16.0 g of sulfur reacts with 10.0 g of oxygen and 12.0 g of sodium hydroxide according to the following chemical equation?
2 S(s) + 3 O2(g) + 4 NaOH(aq) → 2 Na2SO4(aq) + 2 H2O(l)
a)S(s)
b) NaOH(aq)
c) Na2SO4(aq)
d)O2(g)
In a blast furnace, Iron (III) oxide reacts with coke (carbon) to produce molten iron and carbon monoxide. Fe2O3 + 3C = 2Fe + 3CO. How many kg of iron would be formed from 125 kg of Fe2O3?
The total 178571.42 kg of iron would be formed from 125 kg of Fe2O3 in the blast furnace.
The blast furnace is a type of metallurgical furnace used for smelting to produce industrial metals, generally pig iron, but also others such as lead or copper. Blast refers to the combustion air being forced or supplied above atmospheric pressure. It is a block that smelts ores, raw metals and metal armor and tools twice as quickly as a furnace but cannot smelt anything else. In a blast furnace, Iron (III) oxide reacts with carbon to produce molten iron and carbon monoxide.
Fe2O3 + 3C ----> 2Fe + 3CO
Fe2O3 is unstable because the above reaction is thermodynamically favored.
1 mole Fe2O3 = 2×56+3×16 = 160g
2 mole Fe = 112g = 0.112kg
From 125 kg of Fe2O3,
= 160 × 125 /0.112
= 178571.42 kg of Iron formed.
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Which of the following elements can be prepared by electrolysis of their aqueous salts: fluorine, manganese, iron, cadmium?
Fluorine, Manganese, and Iron can be prepared by electrolysis of their aqueous salts, cadmium cannot.
The elements that can be prepared by electrolysis of their aqueous salts are:
Fluorine can be prepared by electrolysis of its aqueous salt, hydrogen fluoride (HF).Manganese can be prepared by electrolysis of its aqueous salt, manganese sulfate (MnSO4)Iron can be prepared by electrolysis of its aqueous salt, Iron (III) chloride (FeCl3)Cadmium cannot be prepared by electrolysis of its aqueous salt, cadmium chloride (CdCl2).It is important to note that the process of electrolysis requires a specific set of conditions such as suitable anodes and cathodes, appropriate temperature, and pressure, to efficiently produce these elements.
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from the data below element first ionization energy 1 1310 kj/mol 2 1011 kj/mol 3 418 kj/mol 4 2080 kj/mol 5 947 kj/mol which element is likely to be a metal? select all that apply
Ionizing radiation, The energy needed to separate an electrons from its neutral gaseous ion or atom is what is meant by this term. Element 3 is probably a metal, hence choice C is the correct one.
What is an electron example?
The smallest elemental component of an atom, the electron has a negative charge. In a neutral atom, there are an equal amount of protons and electrons. One electron one and proton are all that the hydrogen atom has. On the contrary hand, the uranium atom possesses 92 protons, which means 92 electrons.
What do you call an electron?
The collection of subatomic particles known as leptons, which are thought to be basic or elementary particles, includes electrons in its description of particle physics.
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in preparing a certain ointment, a pharmacist used 28.35 grams of zinc oxide instead of the 31.1 grams called for. calculate the percentage of error on the basis of the desired quantity.
When making a certain ointment, a pharmacist utilized 28.35 grams of zinc oxide rather than the 31.1 grams specified, which equals 8.8%.
What sort of substance is an ointment?OTC ointments like Aquaphor and Eucerin provide soothing defense for dry, chapped, or cracked skin. These can also assist with psoriasis and eczema patches.
What distinguishes an ointment from a cream?Creams are mostly used for cosmetic purposes and are water soluble. They can also be applied to treat rashes, allergies, and other skin issues. Ointments are greasy products used for cosmetic or medicinal purposes.
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WHAT IS THE LEWIS STRUCTURE OF FORMAMIDE
A Lewis structure for formamide is formamide CH3NO items are rated lectrons.
Where does formamide come from?The production of formate esters uses formamide as a feedstock. It is also employed as just an ionizing solvent, an RNA stabiliser in electrophoretic, and for tissue preservation.
Formamide's toxicity levelThe reproductive system may be harmed by formamide. Handle with utmost care because: * Exposure can result in skin irritation and rash; * Contact can irritate or burn the eyes.
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a catalyst will decrease the activation energy by roughly 12 kj/mol at room temperature (25 c). it will likely increase the reaction rate by
The exact effect of a catalyst on a reaction rate depends on the specific reaction.
What is reaction rate?Reaction rate is a measure of how quickly a chemical reaction proceeds. It is usually expressed as the amount of a substance that is converted or produced over a given period of time. Reaction rate is an important factor in many areas of chemistry including chemical engineering, biochemistry, and pharmacology. It is also a key parameter in the study of catalysts and enzyme kinetics. Reaction rates are affected by a variety of factors, such as reactant concentration, temperature, and the presence of a catalyst.
Generally speaking, catalysts can increase the reaction rate by several orders of magnitude (e.g., from seconds to nanoseconds). In some cases, it may even be possible for a catalyst to increase the reaction rate by a factor of over a million.
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the oxygen-to-hydrogen mass ratio of water is always 8.0 is an example of what fundamental law?
A) Law of Constant Composition
B) Law of Constant Mass Ratio
C) Law of Conservation of Mass
D) Law of Constant Whole Number Ratio
E) none of the above
The 8.0 oxygen-to-hydrogen mass ratio of water serves as an example of the law of conservation of mass.
In water, the mass ratio of hydrogen to oxygen is 1:8. Atomic weights for H and O are 1 g/mol and 16 g/mol, respectively. Mass is neither created nor destroyed during a chemical reaction, according to the conservation of mass principle. The carbon atom in coal, for instance, changes into carbon dioxide as it burns. The carbon atom's mass remains constant even as it transforms from a solid to a gas. That is to say, the mass of any one element at the start of a reaction will be equal to that element's mass at the conclusion of the reaction.
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how can you alter function of an enzyme without altering it's ability of the enzyme to catalyze reaction.
Catalysts are enzymes. Although some RNA molecules also function as enzymes, they are often proteins. Temperature, pH, & concentration are just few examples of variables that might have impact on enzyme activity.
What exactly are enzymes and what varieties are there?
The International Association of Microbiologists (I U B) classifies enzymes into six functional categories depending on the types of reactions they are employed to catalyse. The six different categories of enzymes include isomerases, hydrolases, peroxides, lyases, transferases, and ligases.
How many different kinds of enzymes are there?
According on the type of process they catalyse, enzymes fall into one of seven categories. These groups include ligases, translocases, hydrolases, lyases, isomerases, and oxidoreductases.
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A. frequency C. wavelength G What do we call the height of a wave? B. amplitude D. speed
Answer:
Explanation:
The height of the wave is called the amplitude.
so the correct answer is B.
to what group in the periodic table would an element with atomic number 119 belong? group 0 (or 18) group ia (or 1) group viia (or 17) group iia (or 2
It will belong to the first group and be an alkali metal. for the 119th atomic-number element: Value: 1 for Group: 1 M2O is an oxide, and its outermost electronic configuration is 8s1.
What does an atomic number mean?The atomic number refers to the number of protons in the nucleus of an atom. The number of protons determines an element's name (i.e., an element with 6 protons is a carbon atom, no matter how many neutrons may be present).
What is the atomic mass and number of the substance?The quantity of the protons and neutrons in a specific element's nucleus is known as the atomic mass. The number of protons in an object's nucleus is often indicated by its atomic number.
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according to the data in model 3, how does the length of the bond between the hydrogen atom and the center atom of a binary acid affect the strength of the acid?
According to the data in model 3, the length of the bond between the hydrogen atom and the center atom of a binary acid has an inverse relationship with the strength of the acid.
That is, as the bond length increases, the acid strength decreases.
In a binary acid, the strength of the acid is determined by the strength of the bond between the hydrogen atom and the center atom. A stronger bond results in a stronger acid, and a weaker bond results in a weaker acid.
The strength of a chemical bond is determined by the distance between the two atoms in the bond. The shorter the distance, the stronger the bond.
Therefore, as the distance between the hydrogen atom and the central atom in a binary acid increases, the bond becomes weaker and the acid becomes weaker.
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Enter an orbital diagram for V5+ Drag the appropriate labels to their respective targets. Labels can be used once, more than once, or not at all. Not all targets will be filled Reset Help P 111 1s 25 38 4s 2p 3p 4p 3d 61 G1 G1 GIG1 G1 GIG1 G1 G1 G1G1G1 G1|| G1 G16161 62 G2 G2 G2 G2 G2 G2 G2
The electronic configuration of V5+ is [Ar]3d3. This means that it has three electrons in its 3d orbitals and no electrons in its 4s, 4p, and 4d orbitals.
The electronic configuration of an atom describes the arrangement of electrons in the atomic orbitals of that atom. In the case of V5+, the electronic configuration is [Ar]3d3, which can be understood as follows:
[Ar] represents the core electrons of the atom, which are the electrons in the innermost energy levels (1s, 2s, 2p) of the atom. In this case, since V5+ is a transition metal, its core electrons are those of argon, which is the element immediately preceding vanadium in the periodic table. The core electrons of argon are in the 1s2, 2s2, and 2p6 orbitals, so they are not involved in the chemical behavior of V5+.3d3 represents the valence electrons of the atom, which are the electrons in the outermost energy levels of the atom. In this case, V5+ has three valence electrons in its 3d orbitals.It is important to note that V5+ as an ion has lost 5 electrons. This means that it has lost the electrons from its 4s, 4p, and 4d orbitals, leaving only the electrons in its 3d orbitals. So no electrons are in 4s, 4p, and 4d orbitals.
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If the products formed from the burning candle are mostly carbon (c), carbon dioxide (co2), and water (h2o), what elements are the reactants, how do you know?
The reactants in candle burning would be carbon, hydrogen, and oxygen.
Fuel (the candlewick and wax) and oxygen are the reactants in the burning of a candle (in the air). Carbon dioxide gas and water vapour are the end results. The substances were hydrogen, oxygen, and carbon. Since nothing is formed or destroyed during a chemical reaction, we can conclude that the element present in the products was also present in the reactants. The law of conservation of energy in physics and chemistry asserts that an isolated system's total energy remains constant. It is the underlying principle of the first law of thermodynamics, which is most frequently stated as "energy cannot be generated or destroyed."
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A solution containing which one of the following pairs of substances will be a buffer solution? A solution containing which one of the following pairs of substances will be a buffer solution? AgBr, HBr CuCl, HCl CsI, HI KI, HI none of the above
Which of the halves that of compounds will make up the buffer solution in a solution Any of the halves that of substances, when present in a solution, will make it a buffer solution None of the above.
What exactly is a buffer solution?As a result, it's essential to have liquids whose pH doesn't really alter even when strong alkalies nor strong acids are added. These are referred to as buffer solutions. The ability of a buffer to withstand a change in pH is known as buffer capacity.
What makes it a buffer solution?it can neutralize a small amount of additional acid or base, the pH of the liquid is kept comparatively steady.
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a chemist makes 480 ml of iron (iii) bromide working solution by adding distilled water ot 120 ml of a 2.43 mol/l stock solution of iron (iii) bromide in water. calculate the concentration fothe chemist's workingsolution.
The concentration of the chemist's working solution, according to the statement, is 0.13 mol/L.
What does chemistry imply by concentration?The quantity of a material, like salt, that is present in a specific volume of material or liquid, like blood, according to science. When there is less water present, the material becomes more concentrated. You can determine how much molecule has been digested in the solvent by looking at the level of the solution's concentration. For instance, the concentration may be stated as 1 teaspoon of salt per 2 cups of water if you add 1 teaspoon to 2 cups of water.
Stock solution concentration, C1 = 2.43 mol/L
Stock solution volume, V1 = 120 mL = 0.120 L
Working solution quantity: V2 = 480 mL = 0.480 L
We have C1V1=C2V2 for the working solution concentration, C2.
Regarding arranging,
C2 = C1V1/V2
= 2.43mol/L*0.120L/0.480L
= 0.13mol/L
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Classify each of the following as a redox reaction or a non-redox reaction.
Zn + CuCl2 --> ZnCl2 + Cu
SO3 + H2O --> H2SO4
HCl + NaOH --> H2O + NaCl
2CO + O2 --> 2CO2
1.Redox; Cu reduced, Zn oxidised No change in oxidation states; non-redox 3. Non-redox; oxidation states remain unchanged 4.Redox; O reduced, C oxidised.
Describe redox in plain English.A chemical reaction that occurs when an oxidising substance and a reducing substance come into contact. In the reaction, the reducing substance obtains electrons while the oxidising substance loses electrons.
What is the purpose of redox?Any chemical process in which a molecule, atom, or ion suffers a change in its oxidation number as a result of acquiring or losing an electron is known as an oxidation-reduction reaction. Many fundamental processes of life, such as photosynthesis, respiration, combustion, and corrosion or rusting, depend on redox reactions.
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Which of the molecules below will be polar?
CS2, BF3, SO2, CH3Br
CH3Br only
CS2 only
Both BF3 and CH3Br
Both SO2 and CH3Br
Both SO2 and CH3Br are polar molecules from of the given molecules in the question.
A polar molecule is what?Negative and positive charge areas are found in polar compounds. An illustration of a polar substance is water. Due to its structure and the sort of bonds it contains, the molecule has a small amount of positive on one end and a small negative charge on the other.
Polar and nonpolar molecules: what are they?When something differs on either end, we say it is polar. These molecules are referred to as polar molecules since they have both positive and negative ends. In that case, we call them non-polar. Polar objects are capable of both attraction and repulsion.
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Write the formula of
(a) manganese(III) sulfide.
(b) iron(II) cyanide.
(c) potassium sulfide.
(d) mercury(II) chloride.
The formulas are as follows-
(a) MnS (b) Fe(CN)2 (c)K2S (d)HgCl2 (Here, the no's are representing in subscript)
Which definition of "formula" is the best?A formula is typically a predetermined pattern used to produce repeatable outcomes. It may consist of a combination of words, figures, or concepts that explain the steps to be taken in order to achieve the intended result. Everywhere we go, formulas—the patterns we adhere to in life—are employed.
What is the definition of a formula in science?In science, a formula, such as a mathematical formula or a chemical formula, is a brief way to convey information symbolically. The basic concept of a relationship between specified quantities is referred to as a formula in informal science usage.
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in which of the following aqueous solutions would you expect agcl to have the lowest solubility? Choose one answer. a. 0.020 M KCl b. pure water c. 0.015 M NaCl d. 0.020 M BaCl2 e. 0.020 M AgNO3
AgCl would have the lowest solubility in 0.020 M BaCl2. The maximum amount of a chemical that will dissolve in a given amount of solvent at a given temperature is referred to as its solubility.
There is a wide range in the solubilities of different substances, and this characteristic of a specific solute-solvent pair is obvious. The equilibrium constant for a solid material dissolving in an aqueous solution is the solubility product constant. Ksp. It refers to how much a solute dissolves in a solution. The Ksp value of a substance rises as its solubility does. The least soluble substance is BaCl2, which also has the lowest Ksp of 0.020 M.
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a solution of ammonia has a ph of 11.8. what is the concentration of oh– ions in the solution?
useful formulas include [H3O^+] = 10^-pH, [OH^-] = 10^-pOH, pH + pOH =14, and [H3O^+][OH^-] = 10^-14
o 1.58 x 10^-12M
o 6.31 x 10^-3M
o 2.20 M
o 158 M
The concentration of OH⁻ ions in the solution is 6.309 x 10^-3 m.
Concentration is termed as the abundance of a constituent divided by the total volume of a mixture.
Ammonia is a colorless irritating gas with sharp suffocating odor. It will dissolve easily in water to form ammonium hydroxide solution which causes irritation and burns. Ammonia gas is easily compressed and it forms a clear as well as colorless liquid under pressure.
pH and pOH are related by an equation:
pH + pOH = 14
11.8 + pOH = 14
pOH = 14 - 11.8
pOH = 2.2
Concentration of OH- ions is given by -
pOH = -log[OH-]
[OH-] = antilog(-2.2)
[OH-] = 6.309×10^-3 m
Hence, concentration of [OH-] is 6.309×10^-3 .
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combustion can occur within a range of concentration of fuel vapor and air; this range is referred to as the:
There is a range of fuel vapor and air concentrations where combustion can occur; this range is known as the below explained.
The range of concentration of fuel vapor and air within which combustion can occur is referred to as the "flammable range" or "explosive range." This range is different for different fuels, but typically it is between the lower explosive limit (LEL) and the upper explosive limit (UEL). The LEL is the minimum concentration of fuel vapor in air at which combustion can occur, while the UEL is the maximum concentration above which combustion cannot occur. It is important to note that Combustion also depends on other factors such as temperature, pressure and the presence of ignition sources.
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(a) how many grams are there in 1 amu of a material? (b) mole is taken in units of gram-mole. on this basis, how many atoms are there in a pound-mole of a substance? round the answers to 3 significant digits using scientific notation format: x.xxe xx. a) enter your answer for part (a) in accordance to the question statement g/amu b) enter your answer for part (b) in accordance to the question statement atoms/pound-mole
(a) The number of grams in 1 amu of material is 1.66 * 10^-24 grams. (b) The number of atoms in pound-mole of a substance is calculated as 2.73 *10^26 atoms.
What is Avogadro's constant?Avogadro constant is the proportionality factor that relates the number of constituent particles in sample with the amount of substance in that sample.
(a): We known that : 1gram = 6.022 * 10^23 amu
1 amu = 1 amu / 6.022 * 10^23 *1 gm= 1.66 * 10^-24 grams
Hence, the number of grams in 1 amu is 1.66 * 10^-24 grams
(b) : We know that the value of gram-mole is same in pound-mole.
As, Number of atoms = Pound-mole * Avogadro's number
And 1 Pound-mole = 453.6 gram-mol
As, Avogadro's number = 6.022 * 10^23
So, number of atoms = 1 pound - mol * 6.022 * 10^23 atoms/g mol
Number of atoms = 453.6 gram. mol * 6.022 * 10^23 atoms/g mol
Now, number of atoms = 2.73 *10^26 atoms
Thus, number of atoms in a pound-mole of substance is 2.73 *10^26 atoms.
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when a thin uniform stick of mass M and length L is pivoted aboutits midpoint, its rotational inertia is ML2/12. When pivoted about a parallel axis through one end, it's rotationalinertia is??
a- ML^2/12
b- ML^2/6
c- ML^2/3
d- 7ML^2/12
e- 13ML^2/12
When a thin uniform stick of mass M and length L is pivoted aboutits midpoint, its rotational inertia is ML²/12. When pivoted about a parallel axis through one end, its rotational inertia is (C) ML²/3.
Using the parallel axes theorem
I = I cm + Mh²
where M is the total mass, Icm is the moment of inertia about a parallel axis through the center of a mass, and h is the distance between the two axes being compared.
I = 1/12 ML² + M (1/2)²
The distance from one endpoint to the halfway point is equal to the length multiplied by two.
Simplify
I = 1/2 ML² + ML² = 1/3 ML²
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how many molecules are in 4.62 moles of nitric acid
The number of molecules in 4.62 moles nitric acid has been 27.82 × 10²³.
It's likely that the common person has had no notion how many molecules make up 4.62 milligrams of hydrogen peroxide, but that's good! By the end of this article, you will be able to confidently respond to that question since you will having studied everything you needed concerning moles and molecules.
The moles have been described as the mass of the compound with respect to the molar mass. According to the Avogadro law, the number of molecules present in a mole of sample has been equivalent to the Avogadro number.
Therefore,
The Avogadro number has been a constant quantity with the value of .
6.023 × 10²³
The Avogadro law has been given as:
1 mole = 6.023 × 10²³ moles
Calculating for 4.62 moles nitric acid as:
4.60 moles = 6.023 × 10²³ × 4.62 molecules
⇒ 4.60 moles = 27.82 × 10²³ molecules.
The number of molecules in 4.62 moles nitric acid has been 27.82 × 10²³
Consequently, there are 27.828 x 10′′23 nitric acid molecules in 4.62 moles of nitric acid. This article is not simply concerning Avogadro's number. It turns out that these mass of the particles impacts how many particles are present in a mole of a substance So.
Complete Question:
How many molecules are in 4.62 moles of nitric acid (HNO3)?
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- Mary went to Daytona Beach and found there was a bathroom scale in her hotel room. The first
morning her weight was 127 lbs. Mary concluded that the grapefruit diet does not work and went to the nearest McDonald's for a supersized Big Mac meal. What was wrong with Mary’s conclusion?
mary went to the bathroom and found the scale to weight out there so she weighed herself at the bathroom and found her weight was 127lbs
what was scale used for ?
What is the purpose of scales. Scales are weight-measurement devices. Balance scales are widely used to compare object weights or to weigh objects by balancing them against standard weights.
Gravity affects the outcomes of scales. Balances, perplexingly, employ a process known as a force restoration mechanism to generate a force that balances the unknown mass.
A scale factor is defined as the ratio of the scale of a given original item to the scale of a new object that is its representation but of a different size (bigger or smaller).
All of this is made feasible by the mathematical idea of scale factor. The scale factor is a quantity used to grow or decrease the size of forms in two-dimensional and three-dimensional geometry. It may be used to make figures that are similar yet have different proportions.
mary went to the bathroom and found the scale to weight out there so she weighed herself at the bathroom and found her weight was 127lbs
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A group of students is investigating whether aluminum is a better thermal conductor than steel. The students take an aluminum wire and a steel wire of the same length and diameter. They put equal lengths of wax on one end of each wire and dip the other end into a beaker of hot water. The length of wax left on the wires after 10 minutes is shown. Experimental Observations Aluminum Steel Original length of wax 2.5 cm 2.5 cm Length of wax after 10 minutes 1.2 cm 1.8 cm Which step should the students take next
The step that the students should take next is : B. Analyze the data.
What is analysis of data?Data Analysis is the process of applying statistical and/or logical techniques to describe and illustrate, condense and recap and then evaluate data.
Here in the given question, students have conducted an experiment to check their hypothesis on thermal conductivity of two metals; Aluminum and steel. The experimental observations have been noted. Next step based on the scientific procedure is to analyze the data.
Analysis of data suggests that; as the length of wax after 10 min is lower in Al than that of steel, hence aluminum is better thermal conductor.
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