In solving stoichiometric problems, conversion factors relating moles of reactants to __________________ of products.
Answers
In solving stoichiometric problems, conversion factors relating moles of reactants to moles of products.
There are many different types of stoichiometry problems, but they all involve using the balanced chemical equation and the conversion factor derived from it to calculate the amounts of reactants and products involved in a chemical reaction.
In solving stoichiometric problems, conversion factors relate the number of moles of reactants to the number of moles of products.
What is stoichiometry?
Stoichiometry is a branch of chemistry that deals with the quantitative relationship between reactants and products in a chemical reaction.
It is based on the law of conservation of mass, which states that the mass of the products must equal the mass of the reactants in a chemical reaction.
The stoichiometric coefficients in a balanced chemical equation provide the basis for stoichiometry calculations. They represent the number of moles of each reactant and product involved in the reaction.
Stoichiometry calculations involve using these coefficients to convert between mass, moles, and volume of reactants and products.
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Related Questions
What ions are formed when naoh is dissolved in water?.
Answers
Answer:
When NaOH dissolves into water, it dissociates into two ions: a positively charged sodium ion and a negatively charged hydroxide ion (OH-). The increased number of hydroxide ions in the solution increases the concentration of hydroxide ions in the water.
Explanation:
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ubstance Y has a heat of fusion of 3.5 KJ/g. How much
heat would a 30 gram sample of substance Y absorbs
to melt at its melting point?
Answers
The amount of heat a 30-gram sample of substance Y absorbs to melt at its melting point is 105 J.
The enthalpy of fusion of a substance additionally referred to as heat of fusion is the alternate in its enthalpy resulting from imparting electricity, usually heat, to a specific amount of the substance to change its state from a stable to a liquid, at a steady strain.
The heat of fusion is the amount of heat vital to alternate 1 g of a stable to a liquid without a temperature exchange.
The heat of fusion is the strength wished for one gram of a solid to melt without any change in temperature. The heat of vaporization is the energy needed for one gram of a liquid to vaporize (boil) without a trade-in strain.
q = m·ΔHf
= 30 × 3.5
heat = 105 J
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What is the name of this ??
Answers
Answer:
Explanation:
Your answer is C
The following equation shows the formation of water from hydrogen and oxygen.
2H2 + O2 → 2H2O
How many grams of water will form if 10.54 g H2 reacts with 95.10 g O2
Which reactant is the limiting reactant?
Answers
As per the given data, approximately 94.17 grams of water will form when 10.54 g of \(H_2\) reacts with 95.10 g of \(O_2\), and \(H_2\) is the limiting reactant.
To determine the limiting reactant, we need to compare the amounts of each reactant and their respective stoichiometric coefficients in the balanced equation.
Given:
Mass of \(H_2\) = 10.54 g
Mass of \(O_2\) = 95.10 g
First, we need to convert the masses of \(H_2\) and \(O_2\) to moles using their molar masses:
Molar mass of \(H_2\) = 2.016 g/mol
Molar mass of \(O_2\) = 31.9988 g/mol
Number of moles of \(H_2\) = 10.54 g / 2.016 g/mol ≈ 5.229 mol
Number of moles of \(O_2\) = 95.10 g / 31.9988 g/mol ≈ 2.972 mol
Now, let's compare the moles of \(H_2\) and \(O_2\) to their stoichiometric coefficients in the balanced equation:
\(2H_2 + O_2 --- > 2H_2O\)
From the balanced equation, we can see that the stoichiometric ratio is 2:1 for \(H_2\) to \(O_2\). This means that 2 moles of \(H_2\) react with 1 mole of \(O_2\) to produce 2 moles of \(H_2O\).
Based on the stoichiometric ratio, we can calculate the maximum amount of water that can be formed from the given amounts of H2 and O2.
The moles of water formed will be limited by the reactant that produces fewer moles of water. From the stoichiometry, we know that 2 moles of H2 react to produce 2 moles of H2O.
Number of moles of water that can be formed from H2 = 2.229 mol × (2 mol H2O / 2 mol H2) = 5.229 mol
Number of moles of water that can be formed from O2 = 2.972 mol × (2 mol H2O / 1 mol O2) = 5.944 mol
Since the number of moles of water that can be formed from H2 (5.229 mol) is less than the number of moles that can be formed from O2 (5.944 mol), H2 is the limiting reactant.
To find the mass of water formed, we need to multiply the number of moles of water by its molar mass:
Molar mass of H2O = 18.015 g/mol
Mass of water formed from H2 = 5.229 mol × 18.015 g/mol ≈ 94.17 g
Therefore, approximately 94.17 grams of water will form when 10.54 g of H2 reacts with 95.10 g of O2, and H2 is the limiting reactant.
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A sample of ethanol (C2H6O) has a mass of 0.2301 g. Complete combustion of this sample causes the temperature of a bomb calorimeter to increase by 1.33°C. The calorimeter has a mass of 2.000 kg and a specific heat of 2.45 J/g•°C.
Answers
The number of mole of ethanol present in the sample is 0.005 mole
Description of moleThe mole of a substance is related to it's mass and molar mass according to the following equation
Mole = mass / molar mass
With the above formula, we can obtain the mole of ethanol
How to determine the mole of ethanolMass of ethanol = 0.2301 gMolar mass of ethanol = 46 g/molMole of ethanol = ?Mole = mass / molar mass
Mole of ethanol = 0.2301 / 46
Mole of ethanol = 0.005 mole
Complete question
A sample of ethanol (C2H6O) has a mass of 0.2301 g. Complete combustion of this sample causes the temperature of a bomb calorimeter to increase by 1.33°C. The calorimeter has a mass of 2.000 kg and a specific heat of 2.45 J/g•°C. How many moles of ethanol are present in the sample?
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La cantidad de corriente se expresa en...
A. Ohmios.
B. Voltios.
C. Amperios.
Answers
Answer:
C
Explanation:
Amps measure the flow of Electrons
Answer:
C
Explanation:
is c
Which of the following elements has the same number of valence electrons as the element boron
Answers
Answer:
Boron and argon have 3 and 8 valence electrons respectively.
Aluminum and calcium have 3 and 2 valence electrons respectively.
Explanation:
Please give the brainliest.
Questions on Pyrimidine Metabolism 1) Carbamoyl phosphate synthetase II (CPS-II) is the committed step in the formation of carbamoyl phosphate is: a) Activated by PRPP b) Inhibited by UMP c) Activated by ATP d) All of the above 2) Which of the following cofactor is used during the conversion of uracil to thymine? a) S-Adenosyl Methionine b) Tetrahydrofolate c) Tetrahydrobiopterin d) Biotin 3) Which of the following cofactor/coenzyme is NOT utilized in the conversion of ribose to deoxyribose? a) NADPH b) FADH2 c) UMP d) Thioredoxin 4) Followings are the example of nucleosides, EXCEPT: a) Adenosine b) Cytidine c) Cytosine d) Uridine 5) The nitrogens of a purine molecule are derived from all of the following amino acids, except? a) Aspartic Acid and Glutamine b) Asparagine and Glutamine c) Glutamate and Alanine d) Glycine and Alanine 6) Which of the following steps of pyrimidine biosynthesis occurs in mitochondria? a) Synthesis of carbamoyl phosphate catalyzed by CPS II b) Conversion of carbamoyl phosphate to carbamoyl aspartate catalyzed by aspartate transcarbamoylase c) Synthesis of dihydroorotate catalyzed by dihydroorotase d) Formation of orotic acid catalyzed by dihydroorotase dehydrogenase 7) Methotrexate inhibits which of the following enzyme? a) ribonucleotide reductase b) thymidylate synthase c) dihydrofolate reductase d) PRPP-amidotransferase 8) Orotic aciduria is an inherited genetic disorder caused by a deficiency of the following enzyme:
Answers
Pyrimidine metabolism refers to the biochemical processes involved in the synthesis, degradation, and utilization of pyrimidine nucleotides, which are the building blocks of DNA and RNA. Based on pyrimidine metabolism, the answers to the multiple choice questions (MCQs) are as follows: d) All of the above; b) Tetrahydrofolate; c) UMP; c) Cytosine; c) Glutamate and Alanine; a) Synthesis of carbamoyl phosphate catalyzed by CPS II
Pyrimidines are nitrogenous bases that include cytosine, thymine, and uracil. The metabolism of pyrimidines is essential for the maintenance of nucleotide pools and the regulation of DNA synthesis and cell growth.
The key steps in pyrimidine metabolism include de novo synthesis, salvage pathway, catabolism, and interconversion of pyrimidine nucleotides. In the de novo synthesis pathway, pyrimidine rings are synthesized from simpler precursors such as amino acids, carbon dioxide, and ATP. This pathway involves several enzymatic reactions that sequentially assemble the pyrimidine ring structure
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how much nacl should be added to 0.35 l of a 0.15 m solution of agno3 so that it reacts completely with the silver to form agcl(s)
Answers
3.08 g of NaCl should be added to 0.35 L of a 0.15 M solution of AgNO3 so that it reacts completely with the silver to form AgCl(s).
What is solution?Solution is a process or action that is used to resolve a problem or issue. Solutions can be found through brainstorming, analysis, research, trial and error, and experimentation.
To calculate how much NaCl should be added to a 0.35 L solution of 0.15 M AgNO3 to completely react with the silver to form AgCl(s), we need to use the stoichiometric ratio of the reactants. The reaction of AgNO3 and NaCl is:
AgNO3 + NaCl → AgCl(s) + NaNO3
The ratio of AgNO3 to NaCl is 1:1, so we need to add an equal amount of moles of NaCl as AgNO3.
To calculate the moles of AgNO3, we need to use the following equation:
Moles = (Concentration)(Volume)
Moles of AgNO3 = (0.15 M)(0.35 L) = 0.0525 moles
Since we need an equal amount of moles of NaCl, we can calculate the amount of NaCl needed as:
NaCl = (0.0525 moles)(58.44 g/mol) = 3.08 g
Therefore, 3.08 g of NaCl should be added to 0.35 L of a 0.15 M solution of AgNO3 so that it reacts completely with the silver to form AgCl(s).
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if a 3.0 m solution of glucosem a 2.0 m solution of na2so4 and 1.0 m solution of (nh4)3po4 is made, which solution will have the lowest vapor pressure, highest boiling point, and lowest freezing point?
Answers
The \(Na_2SO_4\) solution will have the lowest vapor pressure, the highest boiling point elevation, and the highest freezing point depression.
Freezing point, also known as melting point, is the temperature at which a substance transitions from a liquid phase to a solid phase at a given pressure. At the freezing point, the temperature of the substance remains constant until the entire substance has solidified. Freezing point depression is a phenomenon where the freezing point of a solution is lower than that of the pure solvent.
The freezing point of a substance is a characteristic property that depends on its molecular structure and the strength of its intermolecular forces. For example, substances with strong intermolecular forces, such as water, have higher freezing points than substances with weaker intermolecular forces, such as ethanol.
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what happens when there is more kinetic energy?
Answers
Energy that a moving object has due to its motion is Kinetic Energy. Kinetic Energy: ... The faster an object moves, the more kinetic energy it has. The more mass an object has, the more kinetic energy it has.
Answer:
when there is more kinetic energy the objects moves fast...
What is the main chemical stimulus for cerebral autoregulation?
a) CO2 levels
b) O2 levels
c) Sodium levels
d) pH
Answers
Answer: d(pH
Explanation:
In the kinetic-molecular theory of gases, at high temperatures, particles of a gas tend to move _________ and collisions between them are ______.
Answers
In the kinetic-molecular theory of gases, at high temperatures, particles of a gas tend to move faster and collisions between them are more frequent and energetic.
This is because at higher temperatures, the kinetic energy of the gas particles increases, causing them to move faster and collide more frequently. Additionally, as the temperature increases, the average distance between gas particles increases, allowing them to move more freely and collide with less resistance.
These collisions are also more energetic, as the increased kinetic energy of the particles results in greater force upon impact. Overall, the behavior of gas particles at high temperatures is characterized by increased movement and more frequent and energetic collisions.
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15.) The vapor pressure (at 25 °C) of benzene and toluene are 103.4 and 46.9 torr respectively. In a solution of 45.0 g of benzene and 55.0 g toluene what is the applied pressure? (benzene = C6H6 = 78g/mol, toluene = C,Hg = 92 g/mol) a) 102.7 b) 36.3 c) 16.4 d) 169.0 e) 174.6 f) none
Answers
The partial pressure of benzene and toluene is 74.11 torr.
Generally, vapor pressure is defined as a measure of the tendency of a material to change into the gaseous or vapor state, and it basically increases with temperature. Basically the temperature at which the vapor pressure at the surface of a liquid becomes equal to the pressure exerted by the surroundings is known as the boiling point of the liquid.
Pa denotes the Vapor pressure of benzene = 103.4 torr
Pb denotes the Vapor pressure of toluene = 46.9 torr
Moles of benzene can be calculated by the formula,
Number of moles of benzene = Given mass of benzene / Molar mass of benzene = 45/78 = 0.57 moles
Number of moles of toluene = Given mass of toluene/ Molar mass of toluene = 55/92 = 0.59 moles
Mole fraction of benzene (Xa) = 0.57/(0.57+0.59) = 0.57 / 1.16 = 0.49
Mole fraction of toluene (Xb) = 0.59/(0.57+0.59) = 0.50
Partial pressure = (XaPa + XbPb)
= 0.49 × 103.4 + 0.50 × 46.9
= 50.666 + 23.45 = 74.11 torr
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a balloon contains 0.76 mol n2, 0.18 mol o2, 0.031 mol he and 0.026 mol at 739 mm hg. what is the partial pressure of o2?
Answers
Assume that every gas in the list will act perfectly. Using the mole fraction of O2 and the specified pressure, the partial pressure of O2 may be computed (P).
What is specified?
The following diagram illustrates the mathematical link between partial pressure of oxygen (P1) and oxygen mole fraction (X1):
P₁=X₁P
By dividing the total number of moles of gases (0.76 + 0.18 + 0.031 + 0.026) by the number of moles of O2 (0.18 mol), it is possible to determine the mole fraction of O2 as follows:
X₁= 0.18 / (0.76+0.18+0.031+0.026)= 0.1805
In this manner, the partial pressure of O2 (P1) is determined:
P1=0.1805x739mmHg, or 133.4mmHg
According to the estimate above, the partial pressure of oxygen is almost equal to 130 mm Hg. As a result, option C is the best one.
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if loratadine and pseudoephedrine sulfate are put into a LLE system. what would be the best organic phases and aqueous phase to separate them?
Answers
In a liquid-liquid extraction (LLE) system with loratadine and pseudoephedrine sulfate, the choice of organic and aqueous phases is crucial for efficient separation.
Loratadine is a non-polar compound, while pseudoephedrine sulfate is more polar due to the presence of a sulfate group. To achieve effective separation, we need to choose a suitable organic phase and aqueous phase.
For the organic phase, a non-polar solvent such as diethyl ether, ethyl acetate, or chloroform can be used. These solvents have good solubility for loratadine. The non-polar organic phase will extract loratadine from the mixture, allowing for separation from the aqueous phase.
As for the aqueous phase, we need to choose a polar solvent that will selectively extract pseudoephedrine sulfate. Aqueous solutions of acids like hydrochloric acid (HCl) or sulfuric acid (H2SO4) can be used. The acidic conditions protonate the pseudoephedrine sulfate, making it more soluble in the aqueous phase.
To perform the extraction, the mixture of loratadine and pseudoephedrine sulfate is added to the LLE system consisting of the organic phase (non-polar solvent) and the aqueous phase (acidic solution). The mixture is then vigorously shaken to ensure thorough mixing and extraction.
After shaking, the phases are allowed to separate, with the more dense aqueous phase settling at the bottom and the less dense organic phase on top. The layers can be carefully separated, and each phase can be further processed to isolate the desired compounds.
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what product of an acid base reaction is an ionic compound
A. water
B. a metal
C. a gas
D. a salt
Answers
The product of an acid-base reaction that is most likely to be an ionic compound is a salt. Option D).
In an acid-base reaction, the product that is most likely to be an ionic compound is a salt. A salt is formed when an acid reacts with a base, resulting in the transfer of ions between the two reactants. Acids typically release hydrogen ions (H+) when dissolved in water, while bases release hydroxide ions (OH-). When these ions combine, they form water (H2O), which is a neutral molecule.
However, in addition to water, the reaction between an acid and a base also produces a salt. A salt is an ionic compound composed of positive and negative ions. The positive ion usually comes from the base, while the negative ion comes from the acid. The combination of these ions results in the formation of an ionic compound, which is commonly referred to as a salt.
Therefore, the product of an acid-base reaction that is most likely to be an ionic compound is a salt. Hence option D) is correct.
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Sandra reacts 3.345 g of zinc with hydrochloric acid. She obtained 3.956 g of zinc chloride. Calculate the percent composition of chloride in zinc chloride.
Answers
Explanation:
One molecule of the antibiotic known as penicillin G has a mass of ... b) If you isolate 115 g of zinc chloride, what is the percent yield of the metal ... This drives off the volatile hydrochloric acid, but the.
As Sandra reacts to the 3.345 g of zinc with hydrochloride acid as HCL the obtained value is about 3.956 g of zinc and the chloride the calculated value is.
The composition of chloride and zinc chloride is formed when a halogen gains an electron and when the Hydrogen chloride is dissolved.one molecule of the antibiotics known the penicillin i.e G has a mass of 115 g of zinc chloride, what is the percent yield of the metal This drives the volatile HCL acid.Learn more about the Sandra.
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Which postulate of daltons atomic model was later changed and why
Answers
What happens when a neutral object is brought near a positive object?
Answers
Answer:
stick together like magnets
Explanation:
Answer:
If a positively charged body is brought near to a neutral or uncharged body, it induces a negative charge on the near side and a positive charge on the far side of the neutral object. This creates a force of attraction between the two bodies.
What are some factors that affect an element's reactivity?
Answers
calculate the volume in L occupied by 13.2 moles of carbon dioxide gas if the pressure is 250 kPa at 73.6 degrees Celsius
Answers
PV=nRT
Remember change kpa to atm, C to K. The answer will be in Liters. If you dont change into the answer will be wrong.
P= 2.467 atm =250 kpa
V=X L
n= 13.2 moles
R=0.08206
T= 346.75 K = 73.6 C
Plug everything
2.5X L/atm = 375.7 mol/k
X= 150.3 L/atm mol/K
I hope that helps :)
ingestion of antifreeze (ethylene glycol) can cause __________.
Answers
Ingestion of antifreeze, which primarily contains ethylene glycol, can cause severe poisoning and life-threatening complications.
When ethylene glycol is metabolized in the body, it generates toxic metabolites such as glycolic acid and oxalic acid. These metabolites can lead to symptoms including nausea, vomiting, abdominal pain, and neurological disturbances like dizziness, confusion, and seizures.
Additionally, the toxic metabolites can cause metabolic acidosis, a dangerous condition where the body's pH balance becomes acidic. This can lead to organ dysfunction, particularly affecting the kidneys. The formation of calcium oxalate crystals can result in acute kidney injury, which may progress to kidney failure if left untreated.
Treatment for ethylene glycol poisoning often involves the administration of an antidote, such as fomepizole or ethanol, which inhibits the enzyme responsible for metabolizing ethylene glycol into its toxic components. This allows the body to safely eliminate the ethylene glycol without producing harmful metabolites. Prompt medical attention is crucial to prevent severe complications and potentially fatal outcomes.
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WORTH 60 POINTS DONT PLAGIARIZE OR WILL REPORT. thanks :) You and your family are going on a trip in Europe. Calculate the speed in the following picture. Show your work and include units. Include 4-5 sentences explaining.
Answers
Answer:80
Explanation:
It would be 80 kilometers an hour. All you have to do is divide the total distance traveled which in this case is 240 kilometers, by the number of hours driven which is 3 hours.
240km/3 hours = 80km/hour
To find the answer you divide 240 by 3 in order to find how far you go in an hour.
which is the correct expression for converting the mass of a substance in grams to the amount in moles?
Answers
By dividing the mass by the formula mass expressed in g/mol, the quantity of moles in a given mass of a substance can be determined.
3.500 moles equal how many grams of MgO? We multiply by the molar mass to convert the moles of a substance into grams.You must use the grams to moles formula, which reads: n = m / M, where M is the material's molar mass, to accurately calculate the number of moles, n, of a substance with a given mass, m, in grams. When converting a number from grams to moles, it is obvious from equation I that we must divide the provided weight or mass of the material by its molecular weight or mass to obtain moles of substance.
Question ;
which is the correct expression for converting the mass of a substance in grams to the amount in moles?
A . Molecular mass
B . Molar mass
C . Avogadro's mass
D . Formula mass
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No links no bots please
which element is most likely to react with Br
Sr
Ar
K
O
Answers
There are two types of chemical compound one is covalent compound and another is ionic compound in chemistry. In ionic bonds, electrons are completely transferred. The correct option is option C.
What is chemical Compound?Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.
Covalent compounds are formed by covalent bond and ionic compounds are formed by ionic bond. Covalent bond is formed by sharing of electron and ionic bond are formed by complete transfer of electron. Ionic bonds are stronger than covalent bonds. The melting and boiling points are higher in ionic compounds.
Ionic bonds are formed by elements whose electronegativity difference is very large. Since K has high electronegativity among all given elements so K is most likely to react with Br.
Therefore, the correct option is option C.
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Question 5 of 10
What is the molecular formula of the compound CH₂ with molar mass = 168
g/mol?
Answers
Answer:
C12H24
Explanation:
The molar mass of the CH2 unit is 14 g/mole. The final molecule has multiples of CH2 so that it's molar mass is 168 g/mole.
(168 g/mole molecule)/(14 g/mole Unit) = 12 Units
12 CH2 units would make the molecualr formula: C12H24
This is more than one structure that has this formula: Cyclododecane and 1-Dodecene.
Step 3: Measure Solubility in Cold Water
10
0
-10
80
100 m
60
-40
20
Temperature of the water to the nearest degree:
ANSWER IS 2°C. !!!
Answers
Answer:
2 degrees celcius
Explanation:
Acrylonitrile and ethyl acetate have the same boiling point: 77.2°C. In one to two sentences, explain what outcome you would expect if a
mixture of these two substances were distilled.
plsss hurry!
Answers
Acrylonitrile and ethyl acetate can not be separated by simple distillation since they have the same boiling point.
Distillation is a separation technique in chemistry which can be applied only when the substances to be separated have different boiling points. The method relies on the difference between the boiling points of the components of a mixture in order to achieve separation.
Whereby Acrylonitrile and ethyl acetate have the same boiling point: 77.2°C, separation by distillation becomes impossible because the two substances are collected together.
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what is the experimental group in the alka-seltzer experiment
Answers
The Alka-Seltzer experiment's experimental group is the group of volunteers who are given Alka-Seltzer pills to ingest.
The experiment's goal is to test the hypothesis that Alka-Seltzer pills will shorten the time it takes for stomach discomfort to go away. The control group consists of volunteers who were given a placebo, or a false drug, instead of the Alka-Seltzer pills.
The experimental group is critical to the experiment because it allows for a comparison of the outcomes seen in subjects given Alka-Seltzer pills vs those given a placebo. The hypothesis could not be tested and the results could not be appropriately understood in the absence of an experimental group.
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