iodine-123 breaks down in a first-order process with a half-life of 13.1 h. what is the rate constant for this process?
Answers
Iodine-123 breaks down in a first-order process with a half-life of 13.1 h.
The rate constant for this process is 5.29 × 10⁻² / h or 0.0529 h⁻¹ .
k = \(\frac{ o.693 }{ t1/2 }\)
where, k = constant rate
k = \(\frac{ 0.693 }{ 13.1 h }\)
k = 0.0529 h⁻¹ or
k = 5.29 × 10⁻² h⁻¹ or
k = 5.29 × 10⁻² / h
So, if the iodine-123 breaks down in first-order process with a half life of 13.1 h then the rate of constant is 5.29 × 10⁻² h⁻¹ .
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Related Questions
understand the origin of stability of the benzyl group. (benzyl carbanion, benzyl radical, benzylcation), e.g. can you rank order cations of varying stability?
Answers
When considering the stability of benzyl carbanions, radicals, and cations, the resonance effect also plays a significant role. Benzyl carbanions are relatively stable due to the delocalization of the negative charge across the phenyl ring, whereas benzyl radicals are more unstable due to the lack of electron density on the adjacent carbon atom.
The benzyl group, which consists of a phenyl ring attached to a methylene group (-CH2-), is generally considered to be a stabilizing group due to the resonance effect. This effect results in the delocalization of electrons from the lone pair on the adjacent carbon atom to the aromatic ring, making it less reactive towards nucleophiles.
In terms of benzylcation, the stability of the cation is highly dependent on the nature of the substituents on the phenyl ring. For example, a benzylcation with electron-donating substituents on the phenyl ring would be more stable than one with electron-withdrawing substituents.
In terms of ranking benzyl cations of varying stability, those with electron-donating substituents would be the most stable, followed by those with no substituents, and then those with electron-withdrawing substituents. However, it is important to note that this ranking can vary depending on the specific substituents and reaction conditions.
Overall, the stability of the benzyl group and its derivatives can be attributed to the resonance effect, but the specific stability of benzyl carbanions, radicals, and cations depends on the electronic nature of the substituents and the reaction conditions.
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An ion that consists of 7 protons, 9 neutrons, and 10 electrons has a net charge of
A) 2–
B) 2+
C) 3+
D) 3–
The answer is D. Why the answer is not A but D? Can you explain?
Answers
The net charge of the ion that consists of 7 protons, 9 neutrons, and 10 electrons will be -3.
HOW TO CALCULATE NET CHARGE:
The net charge of an ion can be calculated by subtracting the number of electrons from the number of protons in an atom. That is;net charge = no. of protons - no. of electrons
The number of protons is the number of positive charges while the number of electrons is the number of negative charges in an atom. Therefore, if an ion consists of 7 protons, 9 neutrons, and 10 electrons, the net charge is as follows:net charge: 7 - 10
net charge = -3
Therefore, the net charge of the ion that consists of 7 protons, 9 neutrons, and 10 electrons will be -3.Learn more: https://brainly.com/question/21430387?referrer=searchResults
Use the following equation to answer the following question
3 H2 + Na2 —-> 2 NH3
a) Determine the limiting reactant when 5.78 g of H2, and 6.28 g N2 are reacted to make NH3 you expect to get out of the chemical reaction.
Answers
Answer: nitrogen
Explanation:
Converting 5.78 g of hydrogen to moles, we know that the formula mass of hydrogen is about 2(1.00794)=2.01588 g/mol, so 5.78 grams is about 5.78/2.01588=2.867 mol.Converting 6.28 g of nitrogen to moles, we know that the formula mass of nitrogen is about 2(14.0067)=28.0134 g/mol, so 6.28 grams is about 6.28/28.0134 = 0.22417 mol.From the equation, we know that for every 3 moles of hydrogen consumed, 1 mole of nitrogen is consumed.
Considering the hydrogen, the reaction can occur 2.867/3=0.955 times.Considering the nitrogen, the reaction can occur 0.22417 times.Therefore, nitrogen is the limiting reactant.
What isotope remains after the alpha decay of polonium-212.
Answers
Polonium - 212 when goes through alpha radiation or alpha emission it gives isotope lead - 206 has atomic number 82.
What is isotope ?Isotopes are members of a family of an element that all have the exactly same number of protons but they contain different numbers of neutrons in there structure. The number of protons in a nucleus verify the element's atomic number of the molecule.
Elements having same atomic number but they are differ in mass number are called as isotopes . There are many isotopes present in periodic table. Atomic number is denoted by Z while mass number is denoted by M.
for example ; Carbon have different isotope i.e. C₁₂,C₁₃,C₁₄
Thus , lead - 206 which having atomic number 82 is isotope remains after the decay of alpha radiation of polonium - 212.
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Do M&M's melt in your hand?
Answers
Answer:
yea hold them in your hand for a while and your hand will look like a rainbow
Explanation:
What volume of 4.50M hydrochloric acid can be made by diluting 250.0mL of 5.65M HCl?
Answers
Answer:
314mL OR 0.314L
Explanation:
this requires the dilution formula M1V1 = M2V2 where
M1 = initial concentration
V1 = initial volume
M2 = final concentration
V2 = final volume
In this case, we are solving for V1 where M1 = 5.65M, V1 = 250.0 mL, and M2 = 4.50M
Plugged into the equation we get:
(5.65M)(250.0mL) = (4.50M)V2
divide both sides by 4.50M and it becomes (M cancel)
V2 = 314mL
A chemist has three different acid solutions. The first acid solution contains 20% acid, the second contains 30% and the third contains 60%. He wants to use all three solutions to obtain a mixture of 90 liters containing 40% acid, using 2 times as much of the 60% solution as the 30% solution. How many liters of each solution should be used? The chemist should use liters of 20% solution, 30% solution, and liters of 60% solution
Answers
The chemist should use 30 liters of the 20% solution, 20 liters of the 30% solution, and 40 liters of the 60% solution to obtain a mixture of 90 liters containing 40% acid.
Let's denote the number of liters of the 20% solution as x, the number of liters of the 30% solution as y, and the number of liters of the 60% solution as z.
According to the problem, we have the following information:
The total volume of the mixture is 90 liters: x + y + z = 90.
The desired percentage of acid solution in the mixture is 40%: (0.20x + 0.30y + 0.60z) / 90 = 0.40.
The chemist wants to use 2 times as much of the 60% solution as the 30% solution: z = 2y.
Now, we can solve these equations simultaneously to find the values of x, y, and z.
From equation 3, we have z = 2y.
Substituting this into equation 1, we get:
x + y + 2y = 90
x + 3y = 90 (equation 4)
From equation 2, we have:
(0.20x + 0.30y + 0.60z) / 90 = 0.40
Multiplying both sides by 90, we get:
0.20x + 0.30y + 0.60z = 36
0.20x + 0.30y + 0.60(2y) = 36 (since z = 2y)
0.20x + 0.30y + 1.20y = 36
0.20x + 1.50y = 36 (equation 5)
Now, we can solve equations 4 and 5 simultaneously to find the values of x and y.
Multiplying equation 4 by 0.20, we get:
0.20(x + 3y) = 0.20(90)
0.20x + 0.60y = 18
Subtracting this from equation 5, we eliminate x and solve for y:
0.20x + 1.50y - (0.20x + 0.60y) = 36 - 18
0.90y = 18
y = 18 / 0.90
y = 20
Substituting this value of y back into equation 4, we find:
x + 3y = 90
x + 3(20) = 90
x + 60 = 90
x = 90 - 60
x = 30
Since z = 2y, we have:
z = 2(20)
z = 40
Therefore, the chemist should use 30 liters of the 20% solution, 20 liters of the 30% solution, and 40 liters of the 60% solution to obtain a mixture of 90 liters containing 40% acid.
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An acid (A) reacts with a base (B) to produce the salt KNO₃. What are the most likely acid (A) and base (B) that formed this product?
1. A = HNO₃; B = KOH
2. A = HNO₂; B = Ca(OH)₂
3. A = HNO₂; B = KOH
4. A = HNO₃; B = Ca(OH)₂
Answers
organisms which contain only one cell are?
Answers
Answer:
bacteria, protists, and yeast.
Explanation:Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism, while multicellular organisms use many different cells to function. Unicellular organisms
An investigation involves determining which metal is better for making pots that will cook food faster.
Answers
How are fluids used and controlled in manufactured devices?
Answers
Answer:
Fluid power systems perform work by a pressurized fluid bearing directly on a piston in a cylinder or in a fluid motor. A fluid cylinder produces a force resulting in linear motion, whereas a fluid motor produces torque resulting in rotary motion. Within a fluid power system, cylinders and motors (also called actuators) do the desired work. Control components such as valves regulate the system.
What is the mass of 4 moles of CO₂?
Answers
The first thing we need to do is calculate the mass of one mole of carbon dioxide, and we get:
(Mass of Carbon) + (Mass of 2 Oxygen atoms) = Molar mass
Mass = 12 + (2 × 16) = 44gTherefore, carbon dioxide has a molar mass of 44 grams, which is the mass of the gas
In order to determine the mass of 4 molecules of carbon dioxide, we need to multiply it by 4 × 44 = 176g.
Hope this helps :)
\({ \qquad\qquad\huge\underline{{\sf Answer}}} \)
Here we go ~
lets calculate Molar mass of \({\sf CO_2} \) :
\(\qquad \sf \dashrightarrow \: Molar \: \: mass \: \: of \: \: C O _2 = 12 + 2(16)\)
[ Molar mass of\({\sf \: CO_2 } \)= Molar mass of Carbon + 2×( Molar mass of Oxygen )]
\(\qquad \sf \dashrightarrow \: Molar \: \: mass \: \: of \: \: C O _2 = 12 + 32\)
\(\qquad \sf \dashrightarrow \: Molar \: \: mass \: \: of \: \: C O _2 = 44 \: g\)
[ i.e 1 mole of \({\sf CO_2} \) weights 44 grams ]
So, by unitary method :
\(\qquad \sf \dashrightarrow \: 1 \: \: mole \: \: CO_2 = 44 \: \: g\)
\(\qquad \sf \dashrightarrow \: 4 \: \: moles \: \: CO_2 = (44\times 4) \: \: g\)
\(\qquad \sf \dashrightarrow \: 4 \: \: moles \: \: CO_2 = 176 \: \: g\)
Therefore, 4 moles of CO2 weights 176 grams
if 6 moles of a a compound produce 84 J of energy, what is the h reaction in j/mol
Answers
The enthalpy of the reaction is 14 J/mol.
The enthalpy of a reaction (ΔH) is the amount of energy transferred between a system and its surroundings during a chemical reaction at constant pressure, measured in joules per mole (J/mol). This value is important because it can tell us whether a reaction is exothermic or endothermic, as well as give us information about the strength of chemical bonds within the reactants and products.To calculate the enthalpy of a reaction, we need to know the amount of energy released or absorbed (Q) and the number of moles of the compound involved in the reaction (n). We can use the equation:
ΔH = Q/n
Given that 6 moles of a compound produce 84 J of energy, we can calculate the enthalpy of the reaction as follows:
ΔH = Q/n
ΔH = 84 J / 6 mol
ΔH = 14 J/mol
This means that for every mole of the compound involved in the reaction, 14 J of energy is transferred between the system and the surroundings. Since the value is positive, we can conclude that the reaction is endothermic, meaning that it requires an input of energy to occur.It is worth noting that the enthalpy of a reaction can depend on a number of factors, such as temperature, pressure, and the specific conditions under which the reaction occurs. As such, it is important to take these factors into account when calculating or predicting enthalpy values.
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I have a test in chem soon can any one help me?
Answers
Answer:
I will be glad to
which compound should have the largest lattice energy?
Answers
Answer:
From the given compounds MgO has the highest lattice energy.
manganese is a transition metal. consider the isotope: mn-59. how many protons are in an atom of mn-59 if the atom has a charge of 5?
Answers
The atomic number of an element represents the number of protons in an atom of that element. Since the isotope given is Mn-59, the atomic number of manganese (Mn) remains the same, which is 25.
If an atom of Mn-59 has a charge of +5, it means that it has lost 5 electrons. The number of protons in an atom is equal to its atomic number, and the number of electrons is equal to the number of protons in a neutral atom. Therefore, if the atom has lost 5 electrons, the number of protons remains the same, which is 25.
So, an atom of Mn-59 with a charge of +5 has 25 protons.
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3. Starch is classified as a
A. disaccharide.
B. polypeptide
C. nucleotide.
D. polysaccharide.
Answers
Answer:
D
Explanation:
Polysaccharides are long chains of monosaccharides linked by glycosidic bonds. Three important polysaccharides, starch, glycogen, and cellulose, are composed of glucose. Starch and glycogen serve as short-term energy stores in plants and animals, respectively. The glucose monomers are linked by α glycosidic bonds.
Starch is classified as a option D. polysaccharide. Polysaccharides are complex carbohydrates composed of long chains of monosaccharide units, which are simple sugar molecules.
What is StarchStarch is a type of carbohydrate that is made up of many smaller sugar molecules.
It is made up of many smaller sugar units called glucose molecules that are attached together. Starch is a way for plants to store energy. It can be found in seeds, tubers, and other parts of plants. It is an important part of what we eat, especially in foods like potatoes, rice, and grains.
Hence option d is correct.
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What dose sediment consisting
Answers
Answer:
sediments consist of rocks and minerals, as well as the remains of plants and animals
Explanation:
What is an example of a conjugate acid?
Answers
An example of a conjugate acid is the hydronium ion (H3O+). In water, a proton (H+) can be transferred to a water molecule, forming the hydronium ion: H+ + H₂O → H₃O+
A conjugate acid is a species that forms when a base accepts a proton (H+) in a chemical reaction. An example of a conjugate acid is the hydronium ion (H3O+), which is formed when a proton is added to a water molecule (H2O). In this reaction, H2O is the base, and H3O+ is the conjugate acid. Conjugate acids and bases are related by the transfer of a proton, which is also known as a hydrogen ion. In acid-base chemistry, the strength of an acid is measured by its ability to donate a proton, while the strength of a base is measured by its ability to accept a proton.
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Explain the pathway of food from your mouth to the anus. what is the difference between chemical and mechanical digestion? The prevents food from traveling down the trachea. The muscular contractions that move food down the epiglottis are called The 3 parts of the small intestine are the: Explain why the vill is so important to the absorption of nutrients. The role of the large intestine/colon is to absorb The accessory organs of the digestive system are the: and
Answers
The pathway of food from the mouth to the anus involves the following steps: mouth, esophagus, stomach, small intestine, large intestine, and anus.
The process of digestion begins in the mouth where food is broken down into smaller pieces through mechanical digestion, facilitated by the action of teeth and the tongue. Saliva, which contains enzymes, starts the chemical digestion of carbohydrates. The food is then swallowed and travels down the esophagus, a muscular tube that connects the mouth to the stomach. The esophagus uses peristalsis, rhythmic contractions of its muscles, to push the food down into the stomach.
In the stomach, the food mixes with gastric juices and undergoes further mechanical and chemical digestion. The stomach secretes acid and enzymes to break down proteins, and its muscular contractions help to churn and mix the food, forming a semi-liquid mixture called chyme. The chyme then enters the small intestine.
The small intestine is the longest part of the digestive system and consists of three sections: the duodenum, jejunum, and ileum. In the duodenum, the chyme is mixed with digestive enzymes from the pancreas and bile from the liver, which helps in the breakdown of fats. The small intestine is lined with millions of finger-like projections called villi, which greatly increase its surface area. The villi absorb nutrients from the digested food into the bloodstream.
The remaining undigested and unabsorbed material, along with water, passes into the large intestine or colon. The main function of the large intestine is to absorb water and electrolytes from the remaining waste material, consolidating it into feces. The feces are then eliminated from the body through the anus during defecation.
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For a given reaction with ΔH = -28.1 kJ/mol, the ΔG = 0 at 366 K. The value of ΔS must be _______ J/K-mol, assuming that ΔH and ΔS do not vary with temperature.
Answers
To determine the value of ΔS, we can use the equation relating ΔG, ΔH, and ΔS is ΔG = ΔH - TΔS. Given that ΔG is zero at 366 K, we can rewrite the equation as 0 = ΔH - (366 K)ΔS
Given that ΔG is zero at 366 K, we can rewrite the equation as 0 = ΔH - (366 K)ΔS,
Rearranging the equation to solve for ΔS:
ΔS = ΔH / (366 K),
Substituting the given value of ΔH as -28.1 kJ/mol:
ΔS = (-28.1 kJ/mol) / (366 K)
Since the units of ΔH are in kJ/mol and we need the answer in J/K-mol, we convert kJ to J:
ΔS = (-28.1 × 10^3 J/mol) / (366 K)
Calculating the value: ΔS ≈ -76.5 J/K-mol
S is favoured whereas H is unfavourable. If H is negative and S is positive, G will always be negative, making the reaction spontaneous at all temperatures.
Therefore, assuming that ΔH and ΔS do not vary with temperature, the value of ΔS for the given reaction is approximately -76.5 J/K-mol.
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2. in an experiment, 0.137 mol fe reacted with sulfur according to the balanced equation below, and 1.43 g fes was obtained. what was the percent yield of the reaction
Answers
The given balanced chemical equation is: Fe(s) + S(s) → FeS(s)We have to find the percent yield of the reaction.Steps involved in finding percent yield:Calculate the theoretical yield of the product (FeS) from the given amount of limiting reactant (Fe).Calculate the actual yield of the product (FeS) from the given data.
Calculate the percent yield of the reaction using the formula. Theoretical yield of FeS from 0.137 mol Fe:According to the balanced chemical equation :1 mole of Fe reacts with 1 mole of S to give 1 mole of FeS.
Therefore, 0.137 mol of Fe will react with 0.137 mol of S to produce 0.137 mol of FeS.
The molar mass of FeS = atomic mass of Fe + atomic mass of S = (55.85 g/mol + 32.06 g/mol) = 87.91 g/mol.Mass of FeS produced from 0.137 mol of Fe = number of moles × molar mass = 0.137 mol × 87.91 g/mol = 12.06 g.Finally, the theoretical yield of FeS from 0.137 mol Fe is 12.06 g.Actual yield of FeS:
According to the given data, the actual yield of FeS is 1.43 g.Percent yield of the reaction:Percent yield = (actual yield ÷ theoretical yield) × 100Substitute the values in the above equation.Percent yield = (1.43 g ÷ 12.06 g) × 100= 11.85%Therefore, the percent yield of the reaction is 11.85%.
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What is the difference between strong and weak acids
Answers
Answer:
Weak acids don't fully dissociate in the solvent, whereas strong acid do.
Explanation:
Answer: Strong acids dissociate fully in water to produce the maximum number of H + ions. ... Weak acids, such as ethanoic acid (CH 3COOH), do not fully dissociate
Explanation:
Los ácidos fuertes se disocian completamente en agua para producir el máximo número de iones H +. ... Los ácidos débiles, como el ácido etanoico (CH 3COOH), no se disocian completamente
When ethylene glycol (an antifreeze) is added to water,
the boiling point of the water
A) decreases, and the freezing point decreases
B) decreases, and the freezing point increases
C) increases, and the freezing point decreases
D) increases, and the freezing point increases
Answers
Explanation:
the answer is D they both increase
When ethylene glycol (an antifreeze) is added to water, the boiling point of the water increases, and the freezing point decreases.
What is antifreezer?Antifreezers are the substance which on mixes with any other compound will decreases the freezing point of that compound.
When we add ethylene glycol which is an antifreeze substance in the water then depression in freezing point takes place but at the same time elevation in boiling point also happen, because they had a great attraction force within themselves.
Decresing in boiling point and freezing point is wrong.Decreasing in boiling point and increasing in freezing point is also wrong.Increasing in boiling point and freezing point is also not possible.Hence increasing in boiling point and decreasing in freezing point takes place.
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equation . the value for for is at . the student places the same mass of into of different solutions with specific values and measures the concentration of ions in each solution after equilibrium is reached. based on the data in the table, what can be concluded about the solubility of ? (a) the solubility of is unaffected by because is a constant value at . (b) the solubility of is unaffected by because it is the same value for 7.00 and 8.00. (c) is more soluble at higher because lower concentrations of shift the solubility equilibrium toward and . (d) is less soluble at higher because
Answers
(c) is more soluble at higher because lower concentrations of shift the solubility equilibrium toward and.
The solubility of a substance refers to the amount of that substance that can dissolve in a given amount of solvent at a given temperature and pressure. In this situation, the student is placing a certain mass into different solutions with specific values, and then measures the concentration of ions in each solution after equilibrium is reached.
Based on the data in the table, it can be concluded that:
The solubility is affected by the concentration of ions in the solution.As the concentration of ions decreases (as the goes from 7.00 to 8.00), the solubility of increases.This is because as the concentration of ions decreases, the solubility equilibrium shifts, allowing more to dissolve in the solution.In summary, the solubility of is more at higher because lower concentrations of shift the solubility equilibrium towards and. It means as the concentration of ions decreases, the solubility of the substance increases.
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take into account the speed of the top surface of the tank and find the speed of fluid leaving the opening at the bottom, if h=y2?y1, and A1 and A2 are the areas of the opening and of the top surface, respectively. Assume A1?A2 so that the flow remains nearly steady and laminar.
Express your answer in terms of the variables h, A1, A2, and appropriate constants.
Answers
The speed of the fluid leaving the opening at the bottom is approximately equal to v₂ ≈ (A₁v₁) / A₂
The speed of the fluid leaving the opening at the bottom can be determined using the principle of continuity, which states that the mass flow rate of a fluid remains constant in a steady and laminar flow.
According to the principle of continuity, the equation can be expressed as:
A₁v₁ = A₂v₂
Where A1 and A2 are the areas of the opening and the top surface respectively, v1 is the speed of the fluid at the top surface, and v2 is the speed of the fluid leaving the opening at the bottom.
Given that h = y₂ - y₁, where h is the height difference between the top surface and the opening, and assuming A₁ ≈ A₂, we can rewrite the equation as:
A₁v₁ ≈ A₂v₂
Now we can solve for v₂:
v₂ ≈ (A₁v₁) / A₂
Expressing the answer in terms of the given variables and appropriate constants, the speed of the fluid leaving the opening at the bottom is approximately equal to (A₁v₁) / A₂
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3.A 50.00 mL sample of vinegar was titrated with 0.35 M NaOH. The endpoint was reached when 32.48 mL of the NaOH was added. What was the concentration of Acetic Acid in the vinegar solution
Answers
The concentration of Acetic Acid in the vinegar solution is 0.22736 mol/L.
To find the concentration of acetic acid in the vinegar solution we can use the following equation :
CH3COOH(aq) + NaOH(aq) → NaCH3COO(aq) + H2O(l)
Let's determine the number of moles of NaOH in the solution :
moles NaOH = Molarity × Volume = 0.35 mol/L × 0.03248 L = 0.011368 mol
The balanced chemical equation is used to find the number of moles of acetic acid present in the vinegar solution.
1 mole of NaOH reacts with 1 mole of CH3COOH.
The number of moles of acetic acid in the vinegar solution can be calculated as
moles CH3COOH = moles NaOH = 0.011368 mol
The molar concentration of the acetic acid in the vinegar solution is given by the expression :
concentration of CH3COOH = moles CH3COOH / Volume of vinegar solution in Liters
= 0.011368 mol / 0.0500 L = 0.22736 mol/L
Therefore, the concentration of Acetic Acid = 0.22736 mol/L.
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The head of a hammer is often made of steel. This makes the head heavy, which helps create a strong force for driving nails. Steel is also strong. The head of a hammer must be strong to resist what force?
A The force of the air resistance on the moving hammer
B The force of the person using the hammer
C The force of gravity pulling down on the hammer
D The force of the nail pushing in the opposite direction
Answers
Answer:
A
Explanation:
In simple terms: Hammer goes one way, air goes the other way.
Answer:
d
Explanation:
i took the test
Where would a leaf not be able to perform photosynthesis?
Answers
Answer:
It would not be able to without sun. So in a dark place
Las células epiteliales del estómago producen ácido clorhídrico HCI y su producción en exceso puede producir perforaciones en la mucosa. Una de las maneras de controlar dicho exceso es tomando una solución de bicarbonato de sodio NaHCO3, porque *
Answers
Answer and Explanation:
El bicarbonato de sodio (o carbonato ácico de sodio, NaHCO₃) es utilizado como antiácido debido a que neutraliza al ácido clorhídrico (HCl) en el estómago. Al ser disuelto en agua, el NaHCO₃ se disocia en iones como sigue:
NaHCO₃ → Na⁺ + HCO₃⁻
El anión bicarbonato (HCO₃₋) sufre hidrólisis, aceptando H⁺ del agua y liberando iones hidroxilo (OH⁻):
HCO₃⁻ + H₂O → H₂CO₃ + OH⁻
Por lo tanto, la solución de NaHCO₃ es básica y sus aniones OH⁻ pueden neutralizar los H⁺ del HCl en el estómago, reduciendo la acidez.