When a solution of 0.10 M of AgNO3 is added to 50.0 ml of a CaCl2 solution of unknown concentration, 2.073 g of AgCl precipitates. Assuming 100% yield, what is was the concentration of the CaCl2 solution

Answers

Answer 1

Answer:

Explanation:

Equation for the reaction ;

AgNO3 + HCl → AgCl + HNO3

Since AgNO3 is taken in excess, the limiting reactant/agent here is HCl.

Concentration (molarity) of HCl = 0.110 M

Amount of HCl in 1 litre (1000 mL) solution = 0.110 mol

Amount of HCl in 50 mL = (0.110 x 50)/1000 = 0.0055 mol

As per the reaction equation, the consumption of HCl and the formation of AgCl are in the molar ratio 1 : 1.

Moles of AgCl formed = moles of HCl used = 0.0055

Molar mass of AgCl = 107.8 + 35.5 = 143.3 g/mol


Related Questions

Which of the following has the lowest entropy?
A. H₂O(g)
B. H₂O(s)
C. O₂(g)
D. H₂O(/)

Answers

Answer:

im pretty sure its B

Explanation:

What is the molar mass of a compound if 0.0401 moles weigh 21.6 grams ?

Answers

The molar mass of a compound of 0.0401 moles weighing 21.6 grams is 538.65 g.

The molar mass of a substance is the mass in grams of one mole of the compound. In a substance, the amount of entities present e.g. atoms, molecules, ions, is defined as a mole.

∴M = m / n

M = molar mass

m = mass of a substance (in grams) = 21.6 grams

n = number of moles of a substance = 0.0401 moles

∴ 0.0401 moles of a compound have a mass of 21.6 g

∴  1 mole of the compound will have a mass of  21.6 / 0.0401

                                                         = 538.65 g (molar mass of compound)

So,  the molar mass of a compound of 0.0401 moles weighing 21.6 grams

is 538.65 g.

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A certain reaction is endothermic in the forward direction and has a greater number of molecules on the product side. Which set of conditions should be used to maximize the yield of the products? (5 points)


Group of answer choices

Decrease the temperature and decrease the pressure.

Increase the temperature and decrease the pressure.

Decrease the temperature and increase the pressure.

Increase the temperature and increase the pressure.

Answers

Answer:Decrease the temperature and increase the pressure

what is the IUPAC name of the following substance?

Answers

The IUPAC name of the following substance is 3-methylpent-2-ene.

What is IUPAC NAME?

Th IUPAC nomenclature of an organic chemistry is defined as a method of naming of the organic chemical compounds which is recommended by the International Union of Pure and Applied Chemistry. It was published in the Nomenclature of Organic Chemistry.

Rules:Firstly, we check the chain having large number of carbon atoms. Since, the substance having longest chain contain five chain. Prefix is named by seeing the functional group. Since, methyl group is attached to the third carbon atom. Therefore, 3-methyl is suffix. This compound contains double bond. Therefore, ene is used as suffix

Thus, we concluded that the IUPAC name of the following substance is 3-methylpent-2-ene.

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For each salt, determine how much will remain undissolved if 500 g is mixed into a liter of pure water at 40 ∘c. One significant figure is sufficient in each answer.

Answers

The amount of the salts left undissolved at 40 °C is Lead II nitrate = 300 g and Potassium chloride = 100 g and Potassium dichromate = 0 g.

What is the undissolved salt mass?

We are aware that the mass of a solute that may dissolve at a specific temperature is related to the solubility. The absorption is temperature dependant, it must be said.

Briefing:

Let's consider how much of each salt would absorb at 40 °C;

Pb(NO3)₂ : 0.0g

KCl : 100.0g

K₂Cr₂O₇ : 300.0g

For any salt, we may calculate the amount that can be dissolved at 40 °C by dissolving 500 g and subtracting its solubility at that temperature.

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The complete question is-

For each salt, determine how much will remain undissolved if 500 g is mixed into a liter of pure water at 40 °C. One significant figure is sufficient in each answer.

Pb(NO3)₂:

KCI:

K₂Cr₂O7:

list three ways in which the properties of metallic solids and ionic solids are different.​

Answers

The key difference between ionic and metallic solids is that…

1-ionic solids essentially contain cations and anions.

2-whereas metallic solids contain metal atoms.

3-free electrons.

Balance the chemical equation: Fe + Cl₂ → FeCla.

Answers

Answer:

2Fe + Cl₂ → 2FeCl

Explanation:

Answer:

2Fe + Cl(sub2) ---> 2FeCl

Explanation:

Before balancing, there is 1 Fe and 2 Cl on the left side of the equation. In order to get 2 Cl on the right side, we have to multiply (FeCl) by 2. This causes there to be 2 Fe on the right side also, so now you go back and multiply 2 by the Fe on the left. Leaving you with 2 Fe and 2 Cl on the left, and 2 Fe and 2 Cl on the right.

A transcriptional repressor, which is at a concentration in the bacterial cell of 10 nM, binds to

its target DNA sequence with a KD of 0.1 nM in the absence of its ligand, and with a KD of 1 μM in

the presence of its ligand. It also binds to non-target DNA sequences with a KD of 10 μM

regardless of the presence or absence of its ligand. The transcriptional repressor’s target DNA

sequence occurs once in the genome and there are 20,000 non-target DNA sites in the genome.

What is the specificity of the transcriptional repressor for its target site over non-target sites in

the absence of its ligand?






What is the specificity of the transcriptional repressor for its target site over non-target sites in

the presence of its ligand?

Answers

The specificity of the transcriptional repressor for its target site over non-target sites in the absence of its ligand is very low. The specificity in the presence of the ligand is very high.

What is transcriptional repressor?

Transcriptional repressor is defined as a sequence-specific DNA binding proteins work by enticing corepressor complexes, which are made up of a variety of proteins, including histone modifying enzymes.  It binds the DNA and repel RNA polymerase.

In the absence of its ligand, the specificity of the transcriptional repressor for its target site over non-target sites is relatively low. In the presence of the ligand, the specificity is quite high because ligand is used as a binding agent and if binding agent is not present the molecule does not bind easily.

Thus, the specificity of the transcriptional repressor for its target site over non-target sites in the absence of its ligand is very low. The specificity in the presence of the ligand is very high.

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3. Write the names for each of the following structures.

Answers

The IUPAC names of the given organic compounds are as follows:

methanolpropan-2-ol or 2-propanolbutan-2-ol or 2-butanolhexanolheptanolWhat are the IUPAC names of the given organic compounds?

The IUPAC names of the given organic compounds are derived from three parts to their name:

the root hydrocarbon - this is the longest continuous straight carbon-to-carbon chain whose name is derived from the parent alkanethe suffix - which is the main substituent ground serving as the functional group in the compoundthe prefix - other substituents in the compound that are not the functional group.

The given compounds have a principal functional group of -OH which is the alkanol functional group.

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Which unit cell is a simple cubic unit cell?

Answers

Answer:

his unit cell only contains one atom. Its packing efficiency is about 52%. To packing efficiency, we multiply eight corners by one-eighth (for only one-eighth of the atom is part of each unit cell), giving us one atom. An example of a Simple Cubic unit cell is Polonium.

Explanation:

A description of a unit cell in which a simple cubic unit cell is found in polonium.

How polonium is a simple cubic unit cell

A simple cubic unit cell simply refers to that substance which consist of 8 different atoms in a cubic unit. When we look carefully into polonium, it usually, frequently and most of the time crystalizes in cubic unit. It is on this premise that we say that polonium is identified as a simple cubic unit cell?

So therefore, we can now confirm and also deduce from the explanation above that we a simple cubic unit cell has in itself eight corners of atoms.

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Is it possible to get a homozygous dominant offspring with brown eyes if you
cross and Heterozygous Dad with brown eyes, and a Homozygous recessive
with blue eyed Mom?
Use the empty Punnett square to determine if this is possible. Explain your
answer and copy and paste your completed Punnett square into the
discussion along with your answer.

Answers

Yes, because green eye alleles are more common than blue eye alleles; therefore, a parent with blue eyes can only have two blue eye alleles.

What is a brief definition of alleles?

The term "allele" is used to refer to a gene's alternate form or variants. For each autosomal gene, one allele is inherited from each parent, and we often group the alleles into categories. Usually, we refer to them as normal, wild-type, aberrant, or mutant alleles.

An allele or a gene?

A gene's changeable form is called an allele. There are some genes that come in different forms yet all have the same genomic location on a chromosome. Humans are considered diploid organisms because each genetic locus in them has two alleles, one from each parent..

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What is the medium of the wave being detected by the seismograph
A. paper
B. Air
C. ink
D. rock

Answers

Answer:

D.

Explanation:

How many hydrogen atoms are in 25.5g of c2h2?

Answers

The hydrogen atoms are in 25.5g of C₂H₂ is 11.79 gm. The chemical substance known as acetylene has the formula C₂H₂ . One acetylene molecule contains two hydrogen atoms. The alkyne series' first stable component is acetylene.

What is acetylene ?

The chemical compound acetylene has the formula C2H2 and the chemical formula HC ≡ CH. It is the most basic alkyne and a hydrocarbon. This colorless gas is frequently utilized as a fuel and a component of chemical compounds. Since it is unstable in its pure state, a solution is typically used.

Compressed acetylene and compressed oxygen are frequently utilized to power torches used for a variety of operations. Due to its strong flammability, instability, and particular storage and transportation needs, acetylene poses special risks. Acetylene is extremely brittle.

Thus, The hydrogen atoms are in 25.5g of C₂H₂ is 11.79 gm.

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During aerobic respiration, h2o is formed. Where does the oxygen atom for the formation of the water come from?.

Answers

The oxygen atom for the formation of the water comes from molecular oxygen.

The non-metallic chemical element oxygen is found in Group 16 of the periodic table, generally known as the oxygen group (O). All living creatures require the colorless, tasteless, and odorless gas known as oxygen. When plants use it as a source of carbon and release the oxygen back into the environment, plants utilise the carbon dioxide that animals have taken up and converted it into.

Oxygen may react with almost every other element to form compounds in addition to reactions that remove elements from their combinations with one another. Combustions are the name for these reactions, which are typically accompanied by the creation of heat and light. The most important component is water.

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How does the weight of an object affect the amount of force it would need to move

Answers

Because heavier object tend to resist any form of changes more that light objects

If 9.8 g of sulfuric acid is dissolved in an excess quantity of water, it will yield _______ moles of hydrogen ion ( H+) and _______ mole of sulphate ions (SO4 -2).

Answers

If 9.8 g of sulfuric acid is dissolved in an excess quantity of water, it will yield 0.2-mole moles of hydrogen ions ( H+) and 0.1 moles mole of sulfate ions (SO4 -2).

Sulfuric acid or sulphuric acid, known in antiquity as oil of vitriol, is a mineral acid composed of the factors sulfur, oxygen, and hydrogen, with the molecular system H₂SO₄. it's miles a drab, odorless and viscous liquid that is miscible with water.

Calculation:-

The molar mass of sulphuric acid = 98

mass = 9.8 gram

moles = mass/ molar mass

           = 9.8/98

            = 0.1 moles

moles of H+ = 2 × 0.2 = 0.2 mole

moles of sulfate ions (SO4 -2). = 0.1 moles.

Sulfuric acid is used in many industries. it's used to supply other chemical compounds, explosives, and glue; to refine petroleum; to remedy metal, and in lead-primarily based vehicle batteries.

Sulfuric acid reacts violently with alcohol and water to launch warmth. It reacts with most metals, mainly while diluted with water, to shape flammable hydrogen gasoline, which may additionally create an explosion danger.

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Help me please!!
Means a lot

Answers

How to identify covalent and ionic compounds?

Ionic compounds are (usually) formed when a metal reacts with nonmetal (or a polyatomic ion). Covalent compounds are formed when two nonmetals react with each other

11 dinitrogen trioxide - N2O3 - covalent , both oxygen and nitrogen are nonmetals.

13 barium phosphate - Ba₃ (PO4)₂ - ionic , bond is created by giving or taking electrons.

14 lithium acetate - Li⁺ CH3COO⁻ - ionic

15 phosphorus trifluoride - PF₃ - covalent, formed by the sharing of electrons between phosphorus and fluorine atoms.

16 vanadium (V) oxide - V2O5 - ionic

17 aluminum hydroxide - Al(OH)3 - covalent, according to fajan rule

18 zinc sulfide - ZnS - ionic , its composed of Zn²⁺ and S²⁻ ions

19 silicon tetrafluoride - SiF4 - covalent, their bonds are arranged in tetrahedral shape

20 nickel(11) phosphate - Ni₃(PO4)₂ - ionic, as nickel is metal and phosphate is polyatomic ion

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1.) A Compound has 38.7% carbon 9.6% hydrogen 51.6% oxygen
What is its empirical formula ?
The molar mass of the compound is 62g/mol what is its molecular formula?


2.) a compound has 94.1% oxygen and 5.9% hydrogen
what is its empirical formula ?
its molar mass is 34 g/mol

Answers

Empirical formula is the simplest whole number ration of elements in a compound. Molecular formula is n times the empirical formula, where n is integers 1,2,... The empirical formula is CH[tex]_2[/tex]O.

What is Empirical formula?

Empirical formula gives the proportion of the element that is present in a compound. It does not give information about the actual number or the arrangements of the atoms.

Number of gram atoms in compound and divide by smallest Number of gram atoms in compound

C=(38.7%)÷12=3.2

H=(9.6%)÷1=9.6

O=( 51.6%)÷16=3.2

The atomic ratio is 3.2:9.6:3.2

Whole number C:H:O is1:2:1

Empirical formula corresponding to this whole number is CH[tex]_2[/tex]O.

Thus the empirical formula is CH[tex]_2[/tex]O.

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Please SHOW WORK/steps for all problems, answers already there

Answers

1. The solution of the problem is volume =  9.14 mL.

Use this formula, P1V1/T1 = P2V2/T2

Here,

P1 = initial pressure, given = 746 mm Hg

V1 = initial volume, given = 10.1 mL

T1 = initial temperature, given = 23° C = 296 K

P2 = final pressure, given = 760 mm Hg

V2 = final volume

T2 = final temperature, given = 0° C = 273 K

Put these values in formula, P1V1/T1 = P2V2/T2

V2 = P1V1T2/P2T1

V2 = 9.14 mL

Hence,

2. The solution of the problem, put the values in formula,

P1V1/T1 = P2V2/T2

V2 = P1V1T2/P2T1

3.The solution of the problem, put the values in formula,

P1V1/T1 = P2V2/T2

V2 = P1V1T2/P2T1

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Part A
A sample of ideal gas is in a sealed container. The pressure of the gas is 735 torr, and
the temperature is 29 °C. If the temperature changes to 62 °C with no change in
volume or amount of gas, what is the new pressure, P2, of the gas inside the container?
Express your answer with the appropriate units.
View Available Hint(s)

P₂ = Value
Submit
O
Units
?

Answers

Pressure of the gas inside the container is 662.59 torr.

What is ideal gas law?

The ideal gas law (PV = nRT) connects the macroscopic characteristics of ideal gases. An ideal gas is one in which the particles are both non-repellent and non-attractive to one another (have no volume).

The general law of ideal gas can be applied here: PV is equal to nRT, where P is the gas pressure in atm.

V is the number of moles of the gas in a mole, and n is the volume of the gas in L. R is the universal gas constant. T is the temperature(Kelvin) of the gas.

If P and T are different values and n and V are constants, then

(P₁T₂) = (P₂T₁).

P₁ = 735 torr, T₁ = 29°C + 273 = 302 K,

P₂ = ??? torr, ​T₂ = 62°C + 273 = 335 K.

∴ P₂ = (P₁T₂)/(P₁) = (735 torr)(302 K)/(335 K) = 662.59 torr.

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Consider the reaction below.

HCl (aq) + NaOH (aq) --> H2O (l) + NaCl (aq) Δ = -55.8 kJ

Calculate the final temperature (in oC) when 25.0 mL of 5.42 M HCl are mixed with 25.0 mL of 4.32 M NaOH, if each solution starts at 25.0 oC.

Ignore the heat absorbed by the calorimeter, and assume the solution has the same specific heat capacity and density as pure water.

Answers

The final temperature (in °C) when 25.0 mL of 5.42 M HCl are mixed with 25.0 mL of 4.32 M NaOH, if each solution starts at 25.0 °C is 28 °C.

The reaction is given as :

HCl  +  NaOH  ----->    H₂O   +   NaCl

moles of HCl = 5.42 × 0.025

                      = 0.135 mol

moles of NaOH = 4.32 × 0.025

                          = 0.108 mol

moles of reaction = 0.108 mol

specific heat capacity is given as:

Q = mc ΔT

Q = 0.108 × (- 55.8) = - 6.026 kJ = 602.6 J

total volume = 25 ml + 25 ml = 50 ml

mass = density × volume

         = 1.04 × 50 = 52 g

now, Q = mc ΔT

          602.6  = 52 × 3.93 × ( T - 25)

The final temperature T = 28 °C

Thus, The final temperature (in °C) when 25.0 mL of 5.42 M HCl are mixed with 25.0 mL of 4.32 M NaOH, if each solution starts at 25.0 °C is 28 °C.

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In a _____, one line represents one pair of electrons being shared.

Answers

In a covalent bond, one line represents one pair of electrons being shared.

What are covalent compounds?

Covalent compounds are compounds formed as a result of sharing of electrons between the atoms that make up the compound.

In other words, electrons are shared among atoms that make up covalent compounds unlike in ionic compounds where some atoms donate electrons while some atoms accept electrons.

Thus, a line in the structure of covalent compounds represents a bond formed as a result of sharing a pair of electrons between two atoms.

For example, the line between C and H in C-H represents a bond formed between the two atoms as a result of sharing a pair of electrons between them.  Whereas, the line between Na and Cl atoms in Na-Cl represents a bond formed as a result of Na donating an electron to Cl.

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*30 Points* What is the electronegativity difference of the compound HNO?


Hydrogen Electronegativity Level: 2.20

Nitrogen Electronegativity Level: 3.04

Oxygen Electronegativity Level: 3.44

Answers

Answer:

Hydrogen Electronegativity Level: 2.20 is the correct answer

What is physical weathering?

the transformation of rocks into some other type of materials

the breaking of rock into smaller pieces from nonchemical processes

the building up of rock that has been brought from other places

the movement of rock from one place to another

Answers

Answer:

B

Explanation:

I took the test

Answer:

the breaking of rock into smaller pieces from nonchemical processes

Explanation:

Basically, the process that breaks rocks apart without changing their chemical composition.

Hydrogen peroxide decomposes to water and oxygen at constant pressure by the following reaction:

2 H2O2(l) → 2 H2O(l) + O2(g) ΔH = -196 kJ

Calculate the value of q (kJ) in this exothermic reaction when 5.00 g of hydrogen peroxide decomposes at constant pressure.

Answers

The value of q (kJ) in the exothermic reaction when 5.00 g of hydrogen peroxide decomposes at constant pressure is 14.40kJ.

What is an exothermic reaction?

Exothermic reaction is the reaction in which the standard enthalpy change of the reaction is negative that is there is release of heat energy.

The q (kJ) in the exothermic reaction can be calculated as,

2 H2O2(l) ------> 2 H2O(l) + O2(g)         ΔH = -196 kJ

So, 196kJ of heat (q) will be released for every 2 moles of hydrogen peroxide. To calculate the heat released for 5.00 g of hydrogen peroxide,

Number of moles of hydrogen peroxide = 5.00g / 34.016 g/mol

n = 0.147

q = -196 x 0.147 / 2 = 14.40kJ.

Therefore, 14.40kJ of heat is released by 5.00 g of hydroxide peroxide when it decomposes in the exothermic reaction.

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Why does a uranium glass glows under UV light ?

Answers

Answer:

The uranium fluoresces under UV light

Explanation:

The uranium fluoresces under UV light because the UV excites the electrons above the ground state and gives off photons as the electrons transition back to the ground state,” Naomi Marks, a research scientist at the Lawrence Livermore National Laboratory in California, tells Collectors Weekly.

Answer:

Uranium oxide.

Explanation:

Uranium glass does indeed glow under a blacklight. This is because of the uranium oxide that is used to produce the glass. When exposed to ultraviolet light, the uranium oxide will emit a greenish-yellow light.

Hypochlorous acid is a weak acid. Write an equation showing how HCIO acts in solution; then
write the K, expression for HCIO.

Answers

Hypochlorous acid is a weak acid. Its equation is following:-

HClO ⇄ H⁺ + ClO⁻

K = [H⁺]  [ClO⁻] / [HClO]

Weak Acids are the acids that do not completely dissociate into their constituent ions when dissolved in solutions.

When dissolved in water, an equilibrium is established between the concentration of the weak acid and its constituent ions.

The awareness of a substance is the quantity of solute present in a given amount of answer. Concentrations are typically expressed in phrases of molarity, defined as the wide variety of moles of solute in 1 L of answer.

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How do I go about solving this?

Answers

Answer:

A. 40.0%

Explanation: Divide 8/20=0.4 Move the decimal twice to the right BAM! you got 40%.

The nature of a volcanic eruption (i.e. how explosive) is determined largely by the _____ of the magma.
A) pressure
B) color
C) density
D) chemistry
E) temperature

Answers

Answer:

D

Explanation:

I'm not 100% sure on this but I am pretty confident that it's D or C I'm 98% sure it's D

What would the sunscreen look like if it absorbed all of the visible light that hits it

Answers

Sunscreen look like if it absorbed all of the visible light that hits it look like skin bright

A substances that help protect the skin from the sun harmful rays and sunscreen reflect and absorbed and scatter both ultraviolet radiation and provide protection against both type of radiation and sunscreen contain ingredient that help absorbed UV light and they sit on the surfaces of the skin and reflect away from the skin and sunscreen ingredient form a thin protective film that penetrate from the skin

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If two loci on a chromosome are very close together, which one of mendels principles still applies?. When ionic crystals dissolve in water, they dissociate into ions. Name the ions in each solution before they react Octane is a component of gasoline. It reacts with oxygen, O2 , to form carbon dioxide and water. Is octane an element or a compound? How can you tell? a summary measure that is computed to describe a characteristic of an entire population is called... group of answer choices a census. the scientific method. a parameter. a statistic. an article in the new york times noted that the human population has shown a significant increase in height. when the relationship of height to reproductive success in humans was examined across three decades (1935-1967), height had a positive correlation to the number of children born and the number of surviving children. these observations suggest that What is the range of this relation? What mixed number is represented on the number line shown here? Need to know if I am correct. Image is provided In 35 sentences, explain how writers directly quote text from another source.I don't need an answer just an explanation.20 pointsLanguage Arts test In scientific notation, 170.04 is written as? pretax accounting income for the year ended december 31, 2021, was $44 million for truffles company. truffles' taxable income was $58 million. this was a result of differences between straight-line depreciation for financial reporting purposes and accelerated depreciation for tax purposes. the enacted tax rate is 28% for 2021 and 38% thereafter. what amount should truffles report as the current portion of income tax expense for 2021? (round your answer to the nearest whole million.) standing heat is characterized by which of the following? high prostaglandin concentration high progesterone concentration high estradiol concentration high fsh concentration A vertical flagpole, AB,ha a height of 42m. The point B, C and D lie on level ground, and BCD i a traight line Point C i 24 m from the bae of the flagpole. The angle of elevation of the top of the flagpole from point D i 48 degree write a paragraph explaining how the pattern of ethnic and racial distribution of the population reflects settlement patterns of immigrants in American history. Include statistics from the chart in your response. What is the normality of a solution of sulfuric acid (H2SO4) that containing 86 gper liter of solution? a divided by 4 is equal to For a= 7 Identify each element as an alkali metal transition metal halogen or noble gas explain your answers URGENT!! Which column is only found in an ten-column worksheet?A. Income Statement B. Adjustments C. Adjusted Trial Balance D. Balance Sheet When analyzing assets, which analysis method assigns financial values to assets?. tests like the implicit association test (iat) are preferred to self-report measures of prejudice. what is not an accurate explanation for this preference?