Calculate the initial [H202] in each flask. (Note: this is not the same as the A[H2O2] calculated in Part 2 _ (Include all units and report [H2Oz] t0 3 significant figures ) V, 8, Trial Vz S2 S2 80 mL xloA 0,250M bOml Trial 0.125M Trial 3 3754 Trial 4 0 3350 Calculate the ratio of the room temperature initial [H2Oz] values. (Show results as well as rounded integers.)

Answer: WAIT WHAT- YOU SHOULD BE MY FRIEND BTW SNAP IS kpurdham5

Explanation: ‍♂️

The inflation rate from 2014 to 2015, assuming 2014 as the base year, is 68.09%.

The inflation rate from 2014 to 2015, assuming that 2014 is the base year, can be determined using the Consumer Price Index (CPI). The CPI measures the cost of goods and services over time and is used to calculate inflation. The formula for calculating inflation rate using CPI is as follows: Inflation rate = ((CPI year 2 - CPI year 1) / CPI year 1) x 100To solve this problem, we first need to calculate the CPI for each year using the prices and quantities of nuts and meat.

Calculating CPI for 2014:CPI 2014 = (300 x $9) + (175 x $19) = $5,625 Calculating CPI for 2015:CPI 2015 = (420 x $9) + (340 x $14) = $9,460Using the CPI formula, we can calculate the inflation rate from 2014 to 2015:Inflation rate = ((CPI 2015 - CPI 2014) / CPI 2014) x 100= (($9,460 - $5,625) / $5,625) x 100= $3,835 / $5,625 x 100= 68.09% (to 2 decimal places) Therefore, the inflation rate from 2014 to 2015, assuming 2014 as the base year, is 68.09%.

To know more about rate visit:-

https://brainly.com/question/31892655

#SPJ11

Answer:

exoplanet: a planet that orbits a star outside the solar system.

pulsar: a celestial source of pulsating electromagnetic radiation (such as radio waves)

Explanation:

exoplanet: a planet that orbits a star outside the solar system.

pulsar: a celestial source of pulsating electromagnetic radiation (such as radio waves)

XeF3+ has a linear molecular geometry with bond angles of approximately 180 degrees.

XeF5+ has a square pyramidal molecular geometry with bond angles of approximately 90 degrees and 120 degrees.

SbF6- has an octahedral molecular geometry with bond angles of approximately 90 degrees.

In the compounds XeF3SbF6- and XeF5SbF6-, the cations are XeF3+ and XeF5+, respectively, and the anion is SbF6-. Let's describe the molecular geometries of these species:

XeF3+ (Xenon Trifluoride Cation):

XeF3+ has a linear molecular geometry. It consists of a central xenon atom (Xe) bonded to three fluorine atoms (F) in a linear arrangement. The bond angles in XeF3+ are approximately 180 degrees.

XeF5+ (Xenon Pentafluoride Cation):

XeF5+ has a square pyramidal molecular geometry. It consists of a central xenon atom (Xe) bonded to five fluorine atoms (F). The geometry is best described as a square base with an additional fluorine atom above the plane, giving it a pyramidal shape. The bond angles in XeF5+ are approximately 90 degrees between the axial fluorine atoms and 120 degrees between the equatorial fluorine atoms.

SbF6- (Hexafluoroantimonate Anion):

SbF6- has an octahedral molecular geometry. It consists of a central antimony atom (Sb) bonded to six fluorine atoms (F). The arrangement of the fluorine atoms around the central antimony atom is similar to the six faces of an octahedron. The bond angles in SbF6- are approximately 90 degrees.

It's important to note that the molecular geometries described here are based on the VSEPR (Valence Shell Electron Pair Repulsion) theory, which predicts the molecular shape based on the repulsion between electron pairs around the central atom.

Learn more about VSEPR from the link given below.

https://brainly.com/question/29755556

#SPJ4

Answer:

well with that you can make a water maker that might make you brother happy because it will keep him alive

Explanation:

Answer:

you could sew a doll for him

or you could punch him in the face and tell him to cheer up

Explanation:

The reaction time needed to achieve 95% conversion of the limiting reactant is approximately 46.05 seconds.

To find the reaction time needed to achieve 95% conversion of the limiting reactant in an isothermal continuously stirred batch reactor, we need to use the first order rate equation:

ln(C₀/C) = kt

Where:
- C₀ is the initial concentration of the reactant
- C is the concentration of the reactant at a given time t
- k is the rate constant of the reaction
- t is the reaction time

In this case, the reaction is first order in both reactants, A and B. So, we need to consider the reactant with the lowest initial concentration as the limiting reactant.

Given:
Initial concentration of A (C₀,A) = 80 mol/L
Initial concentration of B (C₀,B) = 80 mol/L

Since both A and B are present in equal amounts initially, we can consider either A or B as the limiting reactant. Let's assume A is the limiting reactant.

To achieve 95% conversion of A, we need to find the concentration of A at that point, which is (5/100) times the initial concentration of A:
C = (5/100) * C₀,A

Now, substituting the values in the first order rate equation, we get:
ln(C₀,A/C) = k * t

Rearranging the equation, we have:
t = ln(C₀,A/C) / k

Substituting the values given in the problem:
C₀,A = 80 mol/L
C = (5/100) * C₀,A = (5/100) * 80 mol/L = 4 mol/L
k = 1E-3 L/mol/s

Calculating the reaction time:
t = ln(80/4) / (1E-3)

Simplifying the expression:
t = ln(20) / (1E-3)

Using a calculator, we find:
t ≈ 46.05 s

Learn more about limiting reactant here :-

https://brainly.com/question/33417913

#SPJ11

The pKa value for bromcresol green is 4.68, which can be calculated by using Henderson-Hasselbalch equation.

To determine the pKa value for bromcresol green, we can use the Henderson-Hasselbalch equation, which relates the pH, pKa, and the ratio of the concentrations of the acid and base forms of the indicator.

The Henderson-Hasselbalch equation is given by:

pH = pKa + log ([A-]/[HA])

Where:

pH is the measured pH of the solution

pKa is the logarithm (base 10) of the acid dissociation constant for the indicator

[A-] is the concentration of the base form of the indicator

[HA] is the concentration of the acid form of the indicator

In this case, the yellow acid and blue base forms of bromcresol green are present in equal concentrations at a solution pH of 4.68. This means that [A-] = [HA].

Substituting these values into the Henderson-Hasselbalch equation, we have:

4.68 = pKa + log ([A-]/[HA])

Since [A-] = [HA], the ratio is 1:

4.68 = pKa + log(1)

4.68 = pKa

To know more about Henderson-Hasselbalch equation, refer:

https://brainly.com/question/12999557

#SPJ4

Correct question:

The acid-base indicator bromcresol green is a weak acid. The yellow acid and blue base forms of the indicator are present in equal concentrations in a solution when the pH is 4.68. What is the pKapKa for bromcresol green?

Answer:

In simple synthesis reactions involving reaction of elements, such as aluminum metal reacting with chlorine gas, the product will be a simple compound containing both elements. In this case, it is easiest to consider the common charges that the elements adopt as ions and build your product accordingly.

Explanation:

Answer: The ratio of mass of sulfur atom to mass of oxygen atom in sulfur dioxide is 1: 1.

Explanation:

Law of constant proportion states that In a chemical substance the elements are always present in definite proportions by mass. This law is also known as 'Law of definite proportions '.

Mass of 1 atom of sulphur = 32 g

Mass of 1 atom of oxygen = 16 g

Mass of 2 atoms of oxygen =\(16g\times 2=32g\)

In formation of \(SO_2\) , 1 atom of sulfur combines with 2 atoms of oxygen and thus the mass ratio will be 32: 32= 1:1 .

Thus the ratio of mass of sulfur atom to mass of oxygen atom in sulfur dioxide is 1: 1.

Answer:  The atomic mass in the periodic table is a weighted average of all naturally occuring isotopes of zinc.

Explanation:  The elements consist of protons, neutrons, and electrons.  Protons and nuetrons are assigned a mass of 1 amu (atomic mass unit).  Electrons are too small to make a big difference in the mass, so they are assign a 0 for their amu.  Since the elements consist of just these three particles, any one atom must add up to a whole number atomic mass.  Zinc consists of 30 protons, by definition.  A neutral atom has 30 electrons.  The balance of a zinc atom is made up of neutrons.  A Zn-65 atom would have 30 protons and 35 neutrons:

30 Protons = 30 amu

35 Neutrons = 35 amu

30 Electrons = 0 amu

Total AMU = 65

Any ONE Zn atom should have a whole number atomic mass.  But zinc in the environment has isotopes of zinc - atoms that contain differing numbers of neutrons.  A Zn-66 atom would have 36, instead of 35 neutrons.  (P:30, N:36, E:0 = 66 amu).  The atomic mass in the Periodic Table reflects the average of these isotopes as found in the environment.  If the 65 and 66 isotopes were the only ones found naturally, an atomic mass of 65.38 would suggest around 60% of the atoms are Zn-65 and 40% are Zn-66.  The average weight atomic mass would would be 65.40

The atomic mass of zinc which is listed in periodic table is 65.38 but there is no zinc atom with that mass this is due to average atomic mass of naturally occurring isotopes of zinc.

Atomic mass is defined as the mass of an atom which has units of Dalton which is a non-SI unit.One Dalton is defined as approximately equal 1/12 of mass of carbon-12 atom.

The protons and neutrons account for the mass of an atom as they reside inside the nucleus . Electrons do not contribute to the atomic mas as they have negligible mass.

The atomic mass of atoms,ions or nuclei is slightly less than the sum of masses of constituent protons , neutrons and electrons due to the loss in binding energy.Addition of atomic masses of atoms leads to a quantity called as molecular mass.

The observed atomic mass is slightly less than the sum of masses of protons, neutrons  which is called mass defect which arises due to difference in binding energy.

Learn more about  atomic mass, here:

https://brainly.com/question/17067547

#SPJ2

Answer:

5.ethanol and carbon dioxide

6.it contains ethyl alcohol which can be effective at killing viruses and bacteria

Answer: An applied force of 50 N is used to accelerate an object to the right across. A 5-kg object is sliding to the right and encountering a friction force that slows it down. Explanation: m=1000 kg and a=3m/s2 . hence, the force needed to accelerate the 1000kg car by 3m/s2 is 3000N

Explanation: PLEASE MARK  ME AS BRAINLIEST

The number of atoms of lithium in a compound depends on the chemical formula and the molar mass of each compound. To determine the number of atoms of lithium, we need to calculate the number of moles of each compound and then multiply it by Avogadro's number, which represents the number of atoms in one mole of substance.

Let's calculate the number of moles for each compound:
1. LiCl: The molar mass of LiCl is approximately 42.39 g/mol. Therefore, the number of moles can be calculated as 10 g / 42.39 g/mol = 0.236 moles.

Now, let's calculate the number of atoms of lithium for each compound by multiplying the number of moles by Avogadro's number (6.022 x 10^23 atoms/mol):
1. LiCl: 0.236 moles x (6.022 x 10^23 atoms/mol) = 1.42 x 10^23 atoms.
2. LiBr: 0.115 moles x (6.022 x 10^23 atoms/mol) = 6.93 x 10^22 atoms.
3. LiF: 0.385 moles x (6.022 x 10^23 atoms/mol) = 2.32 x 10^23 atoms.
4. LiI: 0.075 moles x (6.022 x 10^23 atoms/mol) = 4.52 x 10^22 atoms.
To know more about that atoms visit:

https://brainly.com/question/12500676

#SPJ11

The medication can treat people who have the disease described. According to the commercial, the drug has FDA approval to treat a condition whose symptoms are listed.

Additionally, the narrator notes that the medication only comes with a prescription and has 1% of the active substance. We can deduce from this information that the drug can effectively treat persons who have the condition generating these symptoms, but obtaining it requires a prescription. The commercial provides no support for the other possibilities.

Therefore, the correct option is D.

Learn more about Medication, here:

https://brainly.com/question/11098559

#SPJ1

1.643 g mass of acid has been dissolved

Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution

\(\large \boxed {\bold {M ~ = ~ \dfrac {n} {V}}}\)

Where

M = Molarity

n = number of moles of solute

V = Volume of solution

Molarity of HCl solution = 0.3 M

Volume of HCl solution = 150 ml=0.15 L

So moles of HCl :

\(\tt n=M\times V\\\\n=0.3\times 0.15\\\\n=0.045\)

mass of HCl (MW=36.5 g/mol) :

\(\tt mass=moles\times MW\\\\mass=0.045\times 36.5\\\\mass=1.643~g\)

Answer: alkali metal

Explanation: ONLY if that is in you suggestions

if not i think this is right

Adding more gas C to the system would shift the equilibrium system to the left.

In a chemical reaction, there is an equilibrium determined by several factors, such as mole concentration, increase or decrease in temperature and addition of mass.

When the amount of reactants is increased, the reaction favors the side of the products and vice versa.

So, to shift the equilibrium to the left, that is, to the reactant side, more of the gas C must be added.

Learn more about chemical balance here:

brainly.com/question/8062886

#SPJ1

The Van't Hoff factor is the ratio of the concentration of particles in an ideal solution to the concentration of particles in a real solution. The ideal value of the Van't Hoff factor for aqueous solutions is as follows:
- C12H22O11: 2
- Na2SO4: 3
- CaCl2: 3
- NaCl: 2
- NH4Cl: 5

This is because the Van't Hoff factor is determined by the number of ions each solute releases when dissolved in water. C12H22O11 dissociates into two ions, Na2SO4 dissociates into three ions, CaCl2 dissociates into three ions, NaCl dissociates into two ions, and NH4Cl dissociates into five ions.The Van't Hoff factor can be defined as the ratio of the concentration of particles formed when a substance is dissolved to the concentration of the substance by mass. The extent to which a substance associates or dissociates in a solution is described by the Van't Hoff factor.

For such more questions on Van't Hoff factor:

brainly.com/question/22047232

#SPJ11

The molality of a 4 kg solution containing 8 moles of a solute is 0.5 mol/kg. Option d is the correct answer.

Molality is the total number of moles of a solute present in one kilogram of a particular solvent. Molality also goes by the name molal concentration. It measures the concentration of the solute in a solution.

Molality is given by moles of a solute per kilogram of solvent. It differs from molarity, which is the number of moles of a solute per litre of the solution.

From the given question, the number of moles of the solute is 8

The mass of the solution is 4 kg.

From molality = number of moles / mass

Molality =  8 moles / 4 kg = 2

The molality is 2 for 4 kg of the solution, so for 1 kg of the solution it will be 2 / 4 = 0.5 mol/kg

Therefore, molality is 0.5 mol/ kg

To know more about molality, visit:

https://brainly.com/question/26921570

#SPJ1

The given unbalanced reaction, Fe + HCl → FeCl\(_{3}\) + H\(^{2}\), can be classified as a single replacement reaction. Option A.

This is because the iron (Fe) is replacing the hydrogen (H) in hydrochloric acid (HCl) to form iron (III) chloride (FeCl\(_{3}\)) and hydrogen gas (H\(^{2}\)). In a single replacement reaction, one element replaces another in a compound. In this case, Fe replaces H in HCl to form FeCl\(_{3}\) and H\(^{2}\). The other reaction types are not applicable to this reaction.

A combination reaction involves two or more reactants combining to form a single product. A double replacement reaction involves two compounds exchanging ions to form two new compounds. A combustion reaction involves the reaction of a fuel with oxygen to produce carbon dioxide and water. A decomposition reaction involves a single reactant breaking down into two or more simpler products. Therefore, the classification for this unbalanced reaction is single replacement. Option A.

More on single replacement reaction: https://brainly.com/question/31311955

#SPJ11

Answer:

basalt

Explanation:

it’s rough on skin

According to law of definite proportions, chemical compound always includes its constituent components in a fixed ratio.

The law of definite proportions, also known as Proust's law or the law of constant composition, holds that no matter the source or technique of manufacture, a particular chemical compound always includes its constituent components in a fixed ratio.

When two elements are combined to form a compound, their mass proportions are always the same. For instance, oxygen makes up roughly 8/9 of both the mass of just about any samples of pure water, and hydrogen make up the remaining 1/9.

Therefore, according to law of definite proportions, chemical compound always includes its constituent components in a fixed ratio.

To know more about law of definite proportions, here:

https://brainly.com/question/30051084

#SPJ1

Answer: 4 FeSO4(s) + O2(g) + 10 H2O(l) ---> 4 Fe(OH)3 + 4 H2SO4

Explanation:

FeSO4(s) + O2(g) + H2O(l) = Fe(OH)3 + H2SO4

In other to balance the equation, the total number of atoms of each element on the Left Hand Side (LHS) of the equation must be equal to the total number of atoms on the  Right Hand Side (RHS) of the equation.

Add the following coefficients to the equation;

FeSO4 = Add 4,  H20 = Add 10,  Fe (OH)3 = Add 4 and H2SO4 = Add 4

By doing this, you will discover that the total number of atoms on bothe sides of the equation are balanced; thus we have;

4 FeSO4(s) + O2(g) + 10 H2O(l) ---> 4 Fe(OH)3 + 4 H2SO4

Answer:

8.09 moles of ethane

Explanation:

To calculate the number of moles of ethane, we need to use Avogadro's number, which is 6.022 x 10^23 molecules per mole. We can use this to convert the given number of molecules into moles.

Number of moles = Number of molecules / Avogadro's number

Number of moles of ethane = 4.87 x 10^24 / 6.022 x 10^23

Number of moles of ethane = 8.09 moles (rounded to two decimal places)

Thus, 8.09 moles of ethane contain 4.87x10^24 molecules of ethane.

Answer:

true

Explanation:

The compound is named 2,3-dibromo-2,4-hexadienedioic acid, which consists of a six-membered ring with alternating single and double bonds.

The line-angle formula describes a six-membered ring with alternating single and double bonds. To name the compound, we need to consider the functional groups and substituents present.

The carboxylic acid group, -COOH, is attached to the first vertex of the ring. This group is named as "hexanedioic acid" because it contains six carbon atoms in a linear chain. The prefix "hexa-" indicates the presence of six carbons, and the suffix "-dioic acid" denotes the presence of two carboxylic acid groups.

The bromine atom, represented by "Br," is attached to the third vertex in a clockwise direction. Since there are two bromine atoms present, the prefix "di-" is used. Thus, the compound is named "dibromo-hexanedioic acid."

To specify the positions of the bromine atoms, we start numbering the ring from the vertex where the carboxylic acid group is attached, which is the first vertex. Moving clockwise, the second vertex has a double bond, the third vertex has a bromine atom, and the fourth vertex has a double bond. Therefore, the compound is named as "2,3-dibromo-2,4-hexadienedioic acid." The numbers indicate the positions of the substituents in the ring.

In summary, the compound is named 2,3-dibromo-2,4-hexadienedioic acid, which represents a six-membered ring with alternating single and double bonds, a carboxylic acid group attached to the first vertex, and a bromine atom attached to the third vertex in a clockwise direction.

Learn more about bromine here: https://brainly.com/question/29557040

#SPJ11

The radius of a barium atom is 2.68 Å.

Barium is a chemical element that is silvery-white in color and can be found in the periodic table with the symbol Ba.

The density of barium is 3.51 g/cm3, and it has a body-centered cubic unit cell that crystallizes.

Determine the length of the edge of the unit cell. Since barium has a body-centered cubic unit cell, the length of the edge of the unit cell:

Edge length = 4r /√3

Where r is the radius of the atom.

The volume of the unit cell using the formula:

Volume of unit cell = Edge length³

The number of atoms present in the unit cell. Since barium has a body-centered cubic unit cell, the number of atoms present in the unit cell :

Number of atoms in the unit cell = 2

The mass of a single atom of barium using the formula:

Mass of a single atom = Density of barium / Avogadro’s number

Where Avogadro’s number is 6.02 × 10²³ atoms/mol.

The radius of a barium atom using the formula:

Radius of barium atom = (3 × volume of unit cell / 4 × π × number of atoms in the unit cell)¹/³

The radius of the barium atom :

Edge length = 2r√3

r = (Edge length) / 2√3

Volume of the unit cell = (Edge length)³

Number of atoms in the unit cell = 2

Mass of a single atom = Density of barium / Avogadro’s number

Radius of barium atom = (3 × volume of unit cell / 4 × π × number of atoms in the unit cell)¹/³

Therefore, the radius of a barium atom is 2.68 Å.

to know more about barium refer here:

https://brainly.com/question/30888146#

#SPJ11

My chocolate recipe is different from commercial milk chocolate in several ways. Firstly, the fat source in my chocolate comes from cocoa butter, while commercial milk chocolate often contains vegetable oils or other substitutes. Secondly, I use a natural sweetener like honey or maple syrup instead of refined sugar. Finally, I do not use an emulsifier in my chocolate recipe, which means it may not have as long of a shelf life as commercial chocolate.

Without an emulsifier, my chocolate may experience some separation or blooming if stored for a year or longer at room temperature. This is because the cocoa butter and other ingredients may start to separate over time. To avoid this, it is best to store the chocolate in a cool, dry place.

The processing and manufacturing steps for my chocolate recipe are also different from commercial chocolate. I start by roasting and grinding cocoa beans into a paste, which is then mixed with other ingredients and poured into molds to harden. Commercial chocolate is often made using large machines and may go through additional processing steps like conching to improve texture and flavor.

Overall, my chocolate recipe offers a more natural and wholesome alternative to commercial chocolate. It may have a shorter shelf life and require more careful storage, but the end result is a delicious and healthier chocolate treat.

Know more about Commercial Milk here:

https://brainly.com/question/27849040

#SPJ11