The actual yield of the product in the given reaction is 68.62 grams.
The ratio of the reaction's actual yield to its theoretical yield, multiplied by 100 is known as the percent yield. The amount of a product that is produced as a result of a chemical reaction is known as the actual yield. And, the amount of a product that results from the total conversion of the limiting reactant in a chemical process is known as the theoretical yield.
From the percent yield formula,
[tex]\text{actual yield}=\frac{\text{percent yield} \times\text{theoretical yield}}{100\%}[/tex]
Here, given, the percent yield is 89.7% and the theoretical yield is 76.5%. Then, the actual yield is,
[tex]\begin{aligned}\text{actual yield}&=\frac{89.7\%\times\mathrm{76.5\;g}}{100\%}\\&=\mathrm{68.62\;g}\end{aligned}[/tex]
The answer is 68.62 grams.
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a sample of argon with a volume of 6.18 l, a pressure of 1.00 atm, and a temperature of 293 k expanded to a volume of 9.45 l and pressure of 0.49 atm. what was its final temperature?
The final temperature for the following sample of argon with a volume of 6.18 l, a pressure of 1.00 atm, is 219.5 K.
The ideal gas equation is generally PV =nRT but for the pressure and temperature the equation is P1V1 / T1 = P2V2 /T2. The P is pressure T is temperature and V us volume that us given along with the temperature and pressure in the ideal gas equation.
Here we have the ideal gas equation as ;
P1 ,= 1.00 atmP2= 0.49 atmV1= 6.18 LV2= 9.45 lT1= 293k T2= ?So the formula is P1V1 / T1 = P2V2 /T2= 1.00*6.18/293 = 0.49*9.45/T2= T2 = 0.49*9.45*293/1.00*6.18 = 219.5 KThen T2 is = 219.5 KRead more about volumes;
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What is the relationship between a 90% confidence interval around a mean and a 95% confidence interval around a mean?
The 90% C.I. is wider and includes more values than the 95% C.I.
The 95% C.I. is more precise in estimating a mean than the 90% C.I.
The 90% C.I. is more precise in estimating a mean than the 95% C.I.
The 95% C.I. is narrower and includes less values than the 90% C.I.
The 90% confidence interval (C.I.) is more precise in estimating a mean than the 95% C.I.
Confidence interval is defined as the range of values where a parameter might fall at a given confidence level. It can be calculated using the formula below.
CI = μ ± z x (SD / √n)
where CI = confidence interval
μ = sample mean
z = found by using a z-score table
SD = sample standard deviation
n = sample size
The larger the degree of confidence is, the wider is the interval. Hence, the 95% C.I. is wider and includes more values than the 90% C.I.
On the other hand, the smaller the degree of confidence is, the more the estimate of a mean is precise. Hence, the 90% C.I. is more precise in estimating a mean than the 95% C.I.
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QUESTION 39 CH3CO2H is called acetic acid The name implies that It does not react with either acids o1 bases b It can donate an H+ ion to baze and forms CH3CO2 It can react with acids but does not react with bases d.It can accept an Ht ion from base_ and forma CH3COzH2 It can donate an electron to base_ and formz CH3CO2H+
Acetic acid is an acid because it can donate [tex]H^+[/tex] and form [tex]CH_{3} CO_{2} ^-[/tex][tex]CH_{3} CO_{2} ^-[/tex]
What is an acid?While there are many definitions of an acid, we are going to dwell with the definition tat was given by Brownstead and Lowry because that is the definition of an acid that we would find to be relevant to the discussion that we have in this question as it is here.
In his definition of the acid, the acid is said to be any substance that is able to release the hydrogen ion. Thus we have to look at the acid as a hydrogen ion donor and this is the general view of the acid that we are going to adopt.
From the forgoing, it is now quite clear that we would be looking at acetic acid as an acid because of the fact that it is able to donate a proton and form the acetate ion.
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identify the following compound. c5h10o: nmr: δ 9.8 (1h, s), δ 1.1 (9h, s)
The Nuclear magnetic resonance data provided in question tells that the molecule is 1-pentanol.
The compound described is likely 1-Pentanol, a simple alcohol with the chemical formula C5H10O. The nuclear magnetic resonance (NMR) spectrum is provided indicates the presence of two types of protons, one with a chemical shift of 9.8 and the other with a chemical shift of 1.1. The "s" notation indicates that these protons are singlet peaks, which means that they are not split by any neighboring protons. The number of protons in each peak (1 and 9) is also consistent with the expected number of protons in a C5H10O molecule.
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Give the hybridization for the O in OF 2. O sp²d O spºda O sp3 O sp2 sp
The O in OF2 sp2 has undergone hybridization.
How can you tell sp3 hybridized carbon apart?compounds with a core atom that is connected by a 4 sigma bond exhibit sp 3 hybridization. Carbon is sp 3 hybridized, for instance, in methane. Sp 2 hybridization is evident when the central atom has three sigma bonds and one pi-bond. In general, single-bond carbon is designated as sp3 and double-bond carbon as sp2.
How do you identify sp2's hybridization?For a particular atom: The amount of atoms that are bonded to it (atoms, not bonds!) the amount of lonely pairs that are connected to it.
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classify each compound as ionic or molecular
Answer:
A molecular compound is a molecule with covalent bonds between its atoms because they have a slight difference in electronegativity and more than half-filled valence shells. They tend to be molecules composed of nonmetals. On the other hand, ionic compounds are molecules with a nonmetal and a metal bonded by ionic bonds due to the difference between their electronegativities being significant. So, to determine if a compound is molecular or ionic, the type of elements in the compound and the difference between their electronegativities have to be considered.
1. Draw the Lewis structure for SeOBr2 in the window below and then answer the questions that follow. Do not include overall ion charges or formal charges in your drawing. Do not draw double bonds to oxygen atoms unless they are needed for the central atom to obey the octet rule. a. What is the electron-pair geometry for Se in SeOBr2 ? b. What is the the shape (molecular geometry) of SeOBr2? 2. Draw the Lewis structure for SeF6 in the window below and then answer the questions that follow. Do not include overall ion charges or formal charges in your drawing. a. What is the electron-pair geometry for Se in SeF6 ? b. What is the the shape (molecular geometry) of SeF6?
SeOBr2 has tetrahedral electron pair geometry and pyramidal structure and SeF6 has octahedral electron pair geometry and octahedral structure as there is no lone pair of electron.
Lewis structure is also known as electron dot structure. This involves simplified diagrams used to represent the bonding of atoms in a molecule. In this type of representation, nonbonded electrons are shown as dots around the atoms while bonded electrons are shown as lines between the atoms. from infrared and polarized Raman spectroscopy suggests that selenium oxobromide adopts a pyramidal molecular geometry with Cs symmetry.
In the Lewis structure of SeOBr2, it has 3 sigma bonds, one lone pair of electron and has the steric number 4.it has sp3 hybridization. it shows tetrahedral electron pair geometry. it shows a pyramidal structure.
In the Lewis structure of SeF6, it has 6 sigma bonds, no lone pair of electron and has the steric number 6. it has sp3d2 hybridization. it shows octahedral electron pair geometry. it shows a octahedral structure.
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what volume of bromine trifluoride is required to produce 106 liters of fluorine gas according to the following reaction? (all gases are at the same temperature and pressure.)
70.6 litres of bromine trifluoride is required to produce 106 liters of fluorine gas according to the following reaction provided that all gases are at the same temperature and pressure.
Since, 2BrF3 (g) gives Br2 (g) + 3 F2 (g)
Here 2 mole BrF3 produces 3 mole F2
If volume produced of F2 is 106 litres
Therefore, volume of BrF3 =?
Since, v1 is directly proportional to n1
Therefore, v1/n1 = v2/n2
v1/2moles = 106 litres/3 moles
v1= 212/3 = 70.6 litres
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suppose 14.0 g of ice at -10.0c is placed into 300.0 g of water in a 200.0-g copper calorimeter. the final temperature of the water and copper calorimeter is 18.0c. 1) what was the initial common temperature of the water and copper? (express your answer to three significant figures.)
The initial common tempreture of the water and copper is 2.354.
What is energy?Energy is ability to do the work.
CSP technologies or to the CENTRAL RECEIVER SYSTEMS use mirrors to by the reflect and concentrate of sunlight onto a receiver. The energy from the concentrated sunlight heats a high temperature fluid in the receiver. This heat - also to the known as thermal energy - can be used to spin a turbine and the or power an engine to the generate electricity.
The solar energy is concentrated by to the heliostat field into the by the central receiver on the top of a tower and absorbed and to the of transferred as heat to the downstream system.
So answer is Doption.
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How would you draw the product of the hydration of 2-butene?
The product of the hydration of 2-butene is a mixture of two compounds, 2-butanol and 2-butanone (also known as methyl ethyl ketone). To draw the product of the hydration of 2-butene, one would draw the structural formulas of both compounds side by side.
The structural formula for 2-butanol is CH3CH(OH)CH2CH3, and the structural formula for 2-butanone is CH3C(O)CH2CH3.
The hydration product of 2-butene leads to the formation of 2-butanol. 2-butanol is a four-carbon saturated alcohol compound with a hydroxyl group attached to the second carbon atom of the butane chain.
2 draw2-butanol. First draw a saturated carbon chain with four carbon atoms and an (-OH) group attached to the second carbon atom.
Follow Markovnikov's Law when adding chiral reagents. According to this rule, the negative portion of the asymmetric reagent is added to the less or more substituted carbon atom of the double bond, and the positive portion is added to the unsubstituted portion of the double bond. It will be added. The addition of HBr to alkenes in the presence of peroxide is an example of an electrophilic addition reaction. Markovnikov's law is not followed during the addition of electrophiles to unsymmetrical alkenes. Chemically, alcohols are hydroxy derivatives of alkanes.
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12 Which of the following molecules is an example of Cs point group? (2 Points) CHCl3 CH4 CHFCIBr CHzClBr CCl4
CHzClBr has Cs point group
CCl4, CH4 have Td point group (Tetrahedral Point Group)
CHCl3 has C3r point group and the structure
CHFClBr has C1 point group of symmetry.
What is Cs point group?The Cs Point Group, those properties belonging to irreducible representation A' are symmetric to both the identity operation E as well as reflection through the mirror plane.
In a tetrahedral molecular geometry, a central atom is located at the center with four substituents that are located at the corners of a tetrahedron. The bond angles are cos⁻¹ ≈ 109.5° when all four substituents are the same, as in methane as well as its heavier analogs.
Here,
CHzClBr has Cs point group
CCl4, CH4 have Td point group (Tetrahedral Point Group)
CHCl3 has C3r point group and the structure
CHFClBr has C1 point group of symmetry
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Draw the products of each reaction .
In acidic medium, nucleophile attacks at more substituted carbon. In basic medium, nucleophile attacks at less hindered side i.e nucleophile attacks at less substituted carbon.
a substance that reacts by supplying two electrons to create a new covalent bond (i.e. a Lewis base). Bronsted-Lowry bases, or simply bases, are nucleophile that share an electron pair with a proton. In an SN2 reaction, the hydrogen ion acts as the nucleophile. The charge of a nucleophile might be neutral or negative. The nucleophile must be a good Lewis base in all scenarios, which means it must be willing to share electrons.
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37) In liquid propanol, CH3CH2CH2OH, which intermolecular forces are present? A) Only dipole-dipole and ion-dipole forces are present. B) Only dispersion and dipole-dipole forces are present. C) Only hydrogen bonding forces are present D) Dispersion, hydrogen bonding and dipole-dipole forces are present. 38) _ 38) The first-order decomposition of N2O5 at 328 K has a rate constant of 1.70 . 10-3 -1. If the initial concentration of N2O5 is 2.88 M, what is the concentration of N2O5 after 12.5 minutes? A) 0.174 M B ) 0.805 M C) 0.355 M D) 0.124 M E ) 2.82 M
In liquid propanol, CH3CH2CH2OH, which intermolecular forces are present, option (d) is correct i.e. Dispersion, hydrogen bonding and dipole-dipole forces are present.
The electromagnetic forces of attraction or repulsion that act between atoms and other types of nearby particles, such as atoms or ions, are examples of intermolecular forces (IMFs), also known as secondary forces. In comparison to intramolecular forces, which hold a molecule together, intermolecular forces are weak. For instance, the forces between adjacent molecules are substantially weaker than the covalent bond, which involves sharing electron pairs between atoms. Both types of forces are crucial components of the force fields that molecular mechanics typically use. A hydrogen bond, which refers to the attraction between a hydrogen atom that is bound to an element with high electronegativity, typically nitrogen, oxygen, or fluorine, is an extreme instance of dipole-dipole bonding. A common way to explain the hydrogen bond is as a powerful electric dipole-dipole interaction. The fact that it is directional, stronger than a van der Waals force interaction, produces interatomic distances shorter than the sum of their van der Waals radii, and typically only involves a small number of interaction partners can be interpreted as a form of valence.
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how many ml of 0.218 m sodium sulfate react with exactly 25.34 ml of 0.113 m bacl2 given the reaction:
Exactly 25.34 mL of 0.113 m bacl2 and 13.1 mL of sodium sulphate in solution of 0.218 m react. The inorganic substance sodium sulphate has the formula Na2SO4.
Number of milli moles of BaCl2 is equal to the molarity of BaCl2 times the volume of BaCl2 solution in mL, which is 0.113 M times 25.34 mL, or 2.86342 mmols.
Na2SO4 + BaCl2 = BaSO4 + 2NaCl
In light of the equation's balance,
The formula for calculating the amount of Na2SO4 needed is: Millimoles of BaCl2 X the volume of Na2SO4 solution in mL = 2.86342 mmols.
Needed volume of Na2SO4 solution divided by 0.218 M equals 2.86342 mmols.
Needed sodium sulphate solution volume: 13.1 mL
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The complete question is -
how many ml of 0.218 m sodium sulfate react with exactly 25.34 ml of 0.113 m bacl2 given the reaction: Na2SO4 + BaCl2 = BaSO4 + 2NaCl.
Why is using a graduated cylinder more accurate than using a beaker?
Measuring cylinders are more particularly made than beakers for accurate measurements of liquids with a significantly lower error.
They have many more graduation markings and close to 0.5-1% inaccuracy, allowing them to precisely measure liquids ranging from 1ml to 1L.
Because of the permanently defined incremental graduations included in the transparent cylinder, a graduated cylinder is regarded more accurate than a beaker for measuring volume.
Because the volume markers on a beaker are simply approximations, they only offer whole numbers. For example, if a 100 mL beaker only has markers every 20 mL, determining the precise volume of a liquid sample lying between the 60 mL and 80 mL marks would be difficult.
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A. Is SiBr4 polar or nonpolar? Briefly defend your answer. B. Draw the Lewis structure and the molecular shape of SO2F-. Name the molecular shape and list the bond angle. (This is a case where you may wish to upload your drawings after submitting the exam. Be sure to list the name of the shape and the bond angle here
The SiBr4 is non polar as the bond it shares it's covalent bond and silicon is more electronegative.
Silicon tetrabromide is a covalent compound with a valuable silicon atom. Silicon itself carries four valence electrons as a primary institution 4A (institution 14) element. It will percentage all of those valence electrons via four single covalent bonds to the four peripheral bromine atoms.
Based on VSEPR theory, a valuable atom with four covalently-related peripheral atoms and 0 non-bonding pairs, outcomes in a tetrahedral molecular geometry. Each Si-Br covalent bond is non polar due to the fact bromine is greater electronegative than silicon. However, the molecule itself isn't always polar, because of the geometry present.
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which of the components of the mixture is most likely to be extracted from the organic solvent phase into the aqueous phase?
Citric acid, malic acid, and lactic acid, among other organic acids present in the mixture, are more likely to be extracted into the aqueous phase from the organic solvent phase.
Organic compounds with acidic characteristics are known as organic acids. The most prevalent organic acids are those that include the carboxyl group COOH, which is what gives them their acidity. Everyone uses organic solvents in the majority of their daily operations, from disinfectant treatment to the elimination of challenging grease stains. The cologne or perfume we wear, as well as laundry detergents needed to keep garments clean and fresh. HOC(CO2H)(CH2CO2H)2 is the chemical formula for citric acid, an organic molecule. This organic acid is weak and colourless. Citrus fruits contain it naturally.
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Platinum has a density of 21.4 g/cm3. What is the mass of 5.9 cm3 of this metal?
The mass of 5.9cm3 of the metal is 126.26kg.
What is Density?A body's density is defined as its mass per unit volume. Density is a measurement that compares the amount of matter (denseness) a body has to its volume. It is the degree of consistency of a body measured by the quantity of mass per unit volume. It is the relationship between the mass of the substance or body and the amount of space it takes up. An object with much matter in a certain volume will have a high density.
Density = mass/volume
From the question;
volume = 5.9cm^3
Density = 21.4g/cm^3
Density = mass/volume
therefore; mass = density x volume
mass = 21.4 x 5.9
mass = 126.26kg
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order: ravicti (glycerol phenylbutyrate) 15 ml po in three equally divided dosages. how many teaspoons will you administer?
The ravicti (glycerol phenylbutyrate) 15 ml po in three equally divided dosages.3 teaspoons will be administered.
Polonium is a chemical element with symbol Po and atomic number 84. Polonium is a chalcogen. A rare and highly radioactive metal with no stable isotopes, polonium is chemically similar to selenium and tellurium, but its metallic character is similar to that of its horizontally neighboring thallium, lead, and bismuth on the periodic table.
Polonium is typically produced in milligrams by neutron irradiation of bismuth. Due to its powerful radioactivity, which leads to radiolysis of chemical bonds and radioactive self-heating, its chemistry has been studied mostly at trace levels.
Calculation :
Order : 15 ml glycerol phenylbutyrate
1 teaspoon = 4.92892 ml
no. of teaspoons needed for 15 ml = 15/4.92892
= 3.04326 ≈ 3 teaspoons
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3. spontaneous reactions: once you give them a little they will on their own. they tend to energy and give it their surroundings. a. total energy ( ), which is enthalpy. in biology our energy is in b . in a spontaneous reaction it gets smaller or b. entropy ( ) is a measure of the d /randomness of a system. in spontaneous reaction, entropy . c. temperature (t), if we i the temperature the spontaneous reaction is more likely to happen.
A spontaneous reaction is a reaction which occurs on its own, without providing any external energy. Spontaneous reactions are irreversible in nature.
A spontaneous reaction has an increase in entropy, ΔS(degree of randomness) and a decrease in enthalpy,ΔH in it.
An exothermic reaction, where there is decrease in enthalpy i.e ΔH is negative and an increase in entropy i.e ΔS is positive will always be spontaneous in nature.
The combination of enthalpy change and entropy change gives the free energy of a reaction , which is known as Gibb's free energy( ΔG°)
ΔG° = ΔH - TΔS
Here, temperature is a deciding factor when both ΔH and ΔS have opposite signs. With increase in temperature, the spontaneity of a reaction increases.
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Methyl isocyanate, shown as resonance structure 1, can also be represented by other resonance structures. Draw the next most important resonance contributor. Then add curved arrows to each structure to show delocalization of electron pairs to form the other structure. HC N=C=0 Resonance Structure 2 Resonance structure 1 Include lone pairs of electrons, formal charges, and hydrogen atoms. You can add condensed hydrogens using the More menu, selecting +H and clicking on the carbon as many times as needed. Draw curved arrows on resonance structure 1. Draw resonance structure 2 and curved arrows. Select Draw Rings More Erase Select Draw Rings More HC - "
Resonance structures are the Lewis structures that describe the delocalization of electrons in a molecule.
Resonance Structure 1 of methyl isocyanate:
This Include lone pairs of electrons, formal charges, and hydrogen atoms.
The formal charge on both Carbon atom is = 4 valance - 4 bonds = 0
Formal charge (O) = 6 V.E - 2 bonds - 4 non bonding electrons = 0
Formal charge on (N) = 5 V.E - 3 bonds - 2 non bonding electrons = 0
F.C. on H = 1 V.E. - 1 bond = 0
Overall charge on the molecule = 0 charge
Structure 2:
Formal Charge on Both (C)= (4valence e- - 4 bonds)= 0
Formal charge (O)= (6 V.E-1Bonds-6 nonbonding electrons)= -1 Charge
Formal Charge on (N)= (5 V.E-4Bonds-0 nonbonding electrons) = +1 Charge
F.C on H= (1 V.E-1Bond)=0
Overall Charge on the molecule= +1 -1 =0 charge
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here structure is not given. i solved this from a similar question. find if it is helpful.
Chemistry give the number of significant figures: 6.32 g
There are 3 important numbers.All digits in significant figures that are not zeros.
How can you locate important numbers in chemistry? There are three important numbers.All digits in significant figures that are not zeros.as well as all zeros that, if deleted, would NOT alter the number.I realize that the words are backwards, but they are important for indicating where the measurement finishes. Basic Guidelines for Calculating the Number of Significant Figures All digits that are not zero have meaning.With two exceptions, zeros are also significant: those that come before the decimal point.In numbers greater than one, terminal zeros before the decimal point present an uncertain situation.(1) All significant numerals are non-zero:There are 2 major figures in 1.2 g and 4 significant figures in 1.234 g.(2) Significant zeros occur between non-zero digits:3.07 mL has three significant digits and 1002 kg has four.5 - The number 48.050 has 5 major digits.
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Nitrogen gas (N2) and hydrogen gas (H2) combine to form ammonia (NH3).
Which equation correctly represents this reaction?
Responses
N2 + 3H2 → 2NH3
upper case N subscript 2 end subscript plus 3 upper case H subscript 2 end subscript rightward arrow 2 upper case N H subscript 3 end subscript,
N + H → NH
upper case N plus upper case H rightward arrow upper case N H,
2NH → N + 3H2
2 upper case N H rightward arrow upper case N plus 3 upper case H subscript 2 end subscript,
2N2 + H2 → 3NH3
2 upper case N subscript 2 end subscript plus upper case H subscript 2 end subscript rightward arrow 3 upper case N H subscript 3 end subscript,
The equation is 2N2 + H2 → 3NH3 ,2 upper case N subscript 2 end subscript plus upper case H subscript 2 end subscript rightward arrow 3 upper case N H subscript 3 end subscript.
What is balanced equation ?A chemical equation that is balanced conserves mass and has an equal number of atoms of each element on both sides of the equation.
A chemical equation that is balanced has equal masses for the reactants and products, contains the same amount of atoms of each element on both sides of the equation.
Equal numbers of atoms from various elements are present in both the reactants and the products in balanced chemical equations. Different elements' atom counts in the reactants and products of unbalanced chemical equations are different.
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What is the average atomic mass of gold if half of the gold found in nature has a mass of 197 amu and half has a mass of 198 amu?
The average atomic mass of gold if half of the gold found in nature has a mass of 197 AMU and half has a mass of 198 AMU is 197.5 AMU.
Atomic mass is the mass of an atom measured in atomic mass units (AMU). It is calculated by taking the average of the masses of all the isotopes of an element. Gold has two naturally occurring isotopes: gold-197 (Au-197) and gold-198 (Au-198). Gold-197 has a mass of 197 AMU, and gold-198 has a mass of 198 AMU.
To calculate the average atomic mass of gold, we need to take the weighted average of the masses of the two isotopes. We can do this by multiplying the mass of each isotope by its relative abundance in nature, and then adding the products together:
Average atomic mass of gold = (197 x 0.5) + (198 x 0.5)
The average atomic mass of gold = 197.5 AMU
Therefore, the average atomic mass of gold if half of the gold found in nature has a mass of 197 AMU and half has a mass of 198 AMU is 197.5 AMU.
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Which of the following reactions is associated with the lattice energy of Li20 (AH°latt)?
A. 2 Li*(g) + 02-(g)Li2O(s)
B. 2 Lit(aq) + O2 (aq) — Li2O(s)
C. Li O(s) 2 Li(aq) + O2-(aq)
D. Li2O(s) 2 Li*(g) + O2-g)
E. 2 Li(s) + 1/2O2(g) → Li2O(s)
(A) 2 Li⁺(g) + O₂⁻(g) → Li₂O(s): this is associated with the lattice energy of Li₂O (ΔH°latt).
What is lattice energy?A measure of an ionic compound's ionic bond strength is called lattice energy. It sheds light on a number of ionic solids' characteristics, such as their solubility, hardness, and volatility.
The precise arrangement of ions in the solid lattice and the configurations of their valence electrons determine the value of the constant K. Lattice energies that have been determined have representative values between 600 and 10,000 kJ/mol.
Thus, correct equation: 2 Li⁺(g) + O₂⁻(g) → Li₂O(s).
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Bromine can exist as a solid, liquid, or gas. The
diagrams show the arrangements of particles in
each of these states.
1) The particles at 20 degrees is shown by C
2) The particles at -10 degrees is shown by A
What are the states of matter?We know that matter can be able to be found in three states and these states of matter are the solid, the liquid and the gaseous states of matter. In this case we have the bromine atom which is found to be in the solid state at a very low temperature when the movement of the particles have become quite restricted.
Having said this, we would now look at the image. It is clear that bromine has a melting point of -7 degrees Celsius and a boiling point of -59 degrees Celsius .
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If you had not heated the sample long enough to remove all the water of hydration, how would your subsequent calculations have been affected?
If the sample is not heated long enough water of hydration remain in the sample which adds on to the molar mass of the sample thereby introducing errors in calculations.
What is molar mass?Molar mass of a compound or a molecule is defined as the mass of the elements which are present in it.The molar mass is considered to be a bulk quantity not a molecular quantity. It is often an average of the of the masses at many instances.
The molecular mass and formula mass are used as synonym for the molar mass.It does not depend on the amount of substance which is present in the sample.It has units of gram/mole.
Molar masses of an element are given as relative atomic masses while that of compounds is the sum of relative atomic masses which are present in the compound.
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HELP ASAP PLEASE HURRY!!!! WILL MARK BRAINLEST!!!!!!!
Nuclear reaction 1 represents a beta decay as a neutron is emitted as one of the products.
What is nuclear reaction?There are two types of nuclear reactions which are nuclear fusion and nuclear fission .They involve the combination and disintegration of the element's nucleus respectively.
In nuclear fission, the nucleus of the atom is bombarded with electrons of low energy which splits the nucleus in to two parts .Large amount of energy is released in the process.It is used in nuclear power reactors as it produces large amount of energy.
In nuclear fusion,on the other hand, is a reaction which occurs when two or more atoms combine to form a heavy nucleus.Large amount of energy is released in the process which is greater than that of the energy which is released in nuclear fission process.
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The fluoride ion is the conjugate base of the weak acid hydrofluoric acid_ The value of Kb for F is 1.39x10-11 Write the equation for the reaction that goes with this equilibrium constant: It is not necessary tO include states such as (aq'
A weak acid hydrofluoric acid's conjugate base is the fluoride ion. Kb for F has a value of 1.39x10-11.
What effects does hydrofluoric acid have on a person's body?Even at low concentrations, hydrogen fluoride gas can irritate the respiratory system, nose, and eyes. High concentrations of hydrogen fluoride inhaled, together with skin contact, can result in irregular heartbeats and fluid accumulation in the lungs, which can lead to death.
Can a person be dissolved in hydrofluoric acid?Since it is caustic, hydrofluoric acid easily disintegrates bone and tissue. Human skin is easily penetrated by HF, allowing it to decalcify bone and destroy the soft tissues underlying (hypocalcemea). Because hydrofluoric acid (HF) may dissolve glass and is a moderately corrosive to metals, it cannot be stored in glass containers.
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Which of the following is an example of quantization? A. The temperature range in a classroom B. The number of students in a classroom C. The amount of time spent in a classroom D. Learning happening in a classroom
Answer:
A. The temperature range in a classroom
Explanation:
Quantization works on continuous data, meaning that the data can't be just integers like the number of students in a classroom or the time spend in a classroom.
Answer: B. The number of students in a classroom
Explanation: Quantization refers to the process of representing a continuous variable with discrete values. In this case, the number of students in a classroom can be quantized because it can only take on certain discrete values, such as whole numbers as there cannot be a fraction of a student.
