How many grams of koh are needed to neutralize 12.6 ml of 0.14 m hcl in stomach acid? type answer:
Answers
0.095grams of KOh is needed to neutralize 12.6 ml of 0.14m HCl in stomach.
A mole is defined as a certain chemical unit, such as an atom, a molecule, an ion, or another type. Due to the large number of atoms, molecules, or other components that make up any substance, the mole is a useful measure to utilise.Chemical reaction:
HCl + KOH → KCl + H2O
Moles HCl = molarity x volume
Moles HCl = 0.14 M x .00126 L
Moles HCl = 0.0017 moles
Calculate moles of KOH
For 1 mol of KOH, we need 1 mole of HCl to produce 1 mol of KOH and 1 mole of H2O
For 0.0017moles of HCl, we need 0.0017 moles of KOH.
Calculate the mass of KOH
Mass of KOH = moles x molar mass
Mass of KOH = 0.0017moles x 56.1 g/mol
Mass of KOH = 0.095g
Hence, 0.095 grams of KOH are needed to neutralize 12.6 mL of 0.14 M HCl in stomach acid.
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Related Questions
responsibility for regulating the disposal of high-level radioactive wastes rests with:
Answers
The responsibility for regulating the disposal of high-level radioactive wastes rests with the Nuclear Regulatory Commission (NRC) and the United States Environmental Protection Agency (EPA).
Radioactive waste is waste produced by nuclear activity or contains radionuclides that are not intended for further use or reprocessing. Radioactive waste consists of different isotopes, each with unique half-lives, radiation strength, and dangers. Because of their extreme levels of radioactivity, radioactive waste materials need careful storage and disposal.The disposal of radioactive waste materials is an intricate process that requires specialized handling. The NRC and EPA are responsible for enforcing regulatory frameworks that ensure compliance with safety protocols and the protection of human health and the environment.
The NRC has several responsibilities, including issuing licenses to commercial nuclear facilities, regulating nuclear safety, and overseeing the storage, handling, and disposal of nuclear waste materials. The organization's primary goal is to protect human health and the environment from the dangers associated with nuclear activity.What is the United States Environmental Protection Agency (EPA)?The United States Environmental Protection Agency (EPA) is a federal agency that is responsible for regulating and enforcing environmental laws within the United States. The EPA's mission is to protect human health and the environment by enforcing regulatory frameworks that limit the impact of pollution and other harmful environmental practices.
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Which is another term for petroleum?O A. CoalOB. OilC. Natural gasOD. Carbon dioxideSUBMIT
Answers
INFORMATION:
We need to determine which is another name for petroleum
STEP BY STEP EXPLANATION:
To determine it, we need to know that:
Petroleum also receives other names such as natural oil, mineral oil, stone oil, noble oil and black oil.
Now, knowing that, we can state that another valid term for petroleum could be oil.
ANSWER:
B. Oil
if two different gases are at the same temperature (which means the gases have the same kinetic energy), how would you determine which gas would have the faster speeds
Answers
You cannot determine which gas would have faster speeds based solely on the same temperature.
What is temperature?Temperature is the measure of the average kinetic energy of the molecules in a given system. Temperature is measured in units of energy such as Celsius, Fahrenheit, and Kelvin, and is expressed as a numerical value. Temperature can be used to measure the physical properties of a material such as its boiling point and melting point. Temperature is also used to measure the degree of heat or coldness of a body or environment.
The speed of the gas particles depends on the mass of the individual particles, the type of motion they are performing (translational, rotational, or vibrational), and the force that is acting on them.
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How do you think the -OH on the end of the pentanol molecule will affect the surface tension? Will pentanol have greater surface tension, less surface tension, or about the same surface tension as pentane or hexane? Write a prediction in the space below, and then submit your answer to move to the next section.
Answers
The -OH on the end of the pentanol molecule will affect the surface tension as it will be higher as that of as pentane or hexane.
What is Surface tension?This is referred to as the tension of the surface film of a liquid caused by the attraction of the particles in the surface layer by the bulk of the liquid.
It minimizes the surface area and the higher strength of the intermolecular force is present in the pentanol therefore the surface tension of the pentanol is more than surface tension of the pentane and hexane.
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Evaluate the integral. (Remember to use absolute values where appropriate. Use C for the constant of integration 17 tan*(x) x? dx Need Help? Read It Submit Answer 11. [0/1 Points] DETAILS PREVIOUS ANSWERS SCALCET9 7.5.052. Evaluate the integral. (Use C for the constant of integration.) /2/697 64 + e* dx X
Answers
Answer:
integral of 17 tan*(x) x dx = uv - integral of v du
= (17 tan*(x))(1/2)x^2 - integral of (1/2)x^2 (17 sec^2(x) dx)
= (17/2) tan*(x) x^2 - (17/4) integral of sec^2(x) dx
= (17/2) tan*(x) x^2 - (17/4) tan(x) + C
where C is the constant of integration.
For the second integral, the integral of (64 + e^x)dx, we can integrate each term separately. The integral of 64 dx is simply 64x, and the integral of e^x dx is e^x. Therefore,
integral of (64 + e^x) dx = 64x
Explanation:
Answer has the explaination.
To evaluate the integral of 17 tan(x) x dx, we can use integration by substitution.
Let u = tan(x), then du/dx = sec^2(x) and dx = du/sec^2(x). Substituting these into the integral gives 17∫u du. Integrating u with respect to itself gives (17/2)u^2 + C. Substituting u = tan(x) back in gives the final answer of (17/2)tan^2(x) + C. Don't forget to include the absolute value of tan(x) when necessary. To evaluate the integral, first note the given function: 17tan(x) x^2 dx. We can apply integration by parts, using the formula ∫u dv = uv - ∫v du. Let u = x^2, so du = 2x dx, and let dv = 17tan(x) dx, so v = 17∫tan(x) dx = -17ln|cos(x)|.
Now, uv - ∫v du = -17x^2ln|cos(x)| - ∫(-17ln|cos(x)|)(2x dx). Next, apply integration by parts again on ∫(-17ln|cos(x)|)(2x dx), with u = 2x and dv = -17ln|cos(x)| dx.
Simplify and combine terms, then add C for the constant of integration to obtain the final answer.
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At what temperature do NaNO3 and KNO3 have the same solubility?
Answers
Answer:
70°C,130.9 ................,...
Group names and pedioric table
Answers
Answer:
The Alkali Metals.
The Alkaline Earth Metals.
The Transition Metals.
The Metalloids.
Other Metals.
The Non-metals.
The Halogens.
The Noble Gases.
Explanation:
These are the 7 groups on the periodic table
Draw the structure of KHP and write the equation for its neutralization with NaOH.
Answers
The neutralization with NaOH is;
KHC₈H₄O₄ (a q)+ NaOH (a q) ===========> KNaC₈H₄O₄ + H₂O (l)
The full name of KHP is potassium hydrogen phthalate (KHC₈H₄O₄)
Structure:-drawn below
Neutralization or see spelling variations s a chemical reaction in which acid and a base react quantitatively with every other. In a response in water, neutralization consequences in there being no extra of hydrogen or hydroxide ions gift inside the answer. The pH of the neutralized answer depends at the acid energy of the reactants.
After an acid AH has been neutralized there are no molecules of the acid or hydrogen ions produced by way of dissociation of the molecule left in solution.
While an acid is neutralized the amount of base brought to it ought to be identical the amount of acid present initially. This amount of base is stated to be the equivalent amount. In a titration of an acid with a base, the point of neutralization also can be called the equivalence point. The quantitative nature of the neutralization reaction is maximum conveniently expressed in terms of the concentrations of acid and alkali. at the equivalence point:
The neutralization with NaOH is;
KHC₈H₄O₄ (a q)+ NaOH (a q) ===========> KNaC₈H₄O₄ + H₂O (l)
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what is the hydronium ion concentration of a solution formed from 15.00 ml of 0.250 m ammonia, nh3 and 100.0 ml of 0.200 m hydrochloric acid, hcl
Answers
The hydronium ion concentration of a solution formed from 15.00 ml of 0.250 m ammonia, \(NH_3\), and 100.0 ml of 0.200 m hydrochloric acid, HCl is 0.536 M.
In order to calculate the hydronium ion concentration of a solution, we can use the equation provided below:
\(C_1V_1 = C_2V_2\)
Where, \(C_1\) is the initial concentration of the first solution
\(V_1\) is the initial volume of the first solution
\(C_2\) is the final concentration of the final solution
\(V_2\) is the final volume of the final solution
Given: Initial concentration of ammonia (\(NH_3\)) = 0.250 m
Initial volume of ammonia (\(NH_3\)) = 15.00 ml
Final concentration of the solution = \(C_2\)
Initial volume of the final solution = 15.00 ml + 100.0 ml = 115.00 ml
Molarity of hydrochloric acid (HCl) = 0.200 m
Now, let's use the equation provided above,
\(C_1V_1 = C_2V_2\)
\(C_2 = (C_1V_1) / V_2C_2\)
= (0.250 mol/L) (0.0150 L) / 0.1150 L
\(C_2\) = 0.0329 mol/L
Concentration of hydronium ion (\(H_3O^+\)) = 2 x 0.0329 M
= 0.536 M
Therefore, the hydronium ion concentration of a solution formed is 0.536 M.
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a sample of ammonia gas occupies 20.0 ml at 585 torr and 20.0 °c. if the volume of the gas is 50.0 ml at 50.0 °c, what is the pressure?
Answers
To determine the pressure of the ammonia gas at a new volume and temperature, we can use the combined gas law, which states that the ratio of the initial pressure, volume, and temperature is equal to the ratio of the final pressure, volume, and temperature.
Using the combined gas law equation: (P1 * V1) / T1 = (P2 * V2) / T2
Given:
P1 = 585 torr (initial pressure)
V1 = 20.0 ml (initial volume)
T1 = 20.0 °C + 273.15 = 293.15 K (initial temperature)
V2 = 50.0 ml (final volume)
T2 = 50.0 °C + 273.15 = 323.15 K (final temperature)
We need to solve for P2 (final pressure).
Rearranging the equation, we have:
P2 = (P1 * V1 * T2) / (V2 * T1)
Substituting the given values into the equation:
P2 = (585 torr * 20.0 ml * 323.15 K) / (50.0 ml * 293.15 K)
Calculating this expression gives us the final pressure (P2) of the ammonia gas at the new volume and temperature.
In summary, using the combined gas law equation, we can determine the pressure of the ammonia gas at a new volume and temperature. By substituting the given values into the equation and performing the calculation, we can find the final pressure of the gas.
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MULTIPLE CHOICE QUESTION
Gain or Lose
Magnesium (Mg) has 2 valence electrons. Will
the Mg atom gain or lose electrons to form an
ion?
• Elements > 4 valance e-
gain e-
• Elements < 4 valance e-
lose e-
Neither
Lose
Gain
Answers
points
Sodium and chlorine react together to form sodium chloride. Identify the reactant(s) and product(s?
Answers
Sodium and chlorine are the two reactants and sodium chloride is the product.
A very reactive metal called sodium interacts with chlorine gas to form sodium chloride, an inert salt. Chlorine gas is reduced to chloride anions whereas sodium is oxidized to sodium cation (Na+) (Cl-).One mole of sodium and two moles of chlorine gas combine to form two moles of sodium chloride.We are aware that chlorine is a very reactive non-metal and that sodium is a very active metal. Typically, non-metals like halogens tend to receive electrons while metals prefer to expel electrons.Chlorine accepts the electron to create the anion Cl-, and sodium rapidly loses its final shell electron to produce the cation Na+.Sodium, a solid reactant, interacts with greenish-yellow gaseous chlorine to form white crystalline sodium chloride.
Therefore, sodium and chlorine are reactants whereas sodium chloride is the product.
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what products would result from the complete hydrolysis of gly-ala-ser? give your answers in the alphabetic order, separate them with commas.
Answers
The complete hydrolysis of gay-ala-ser would result in the following products in alphabetical order: alanine, glycine, and serine. Hydrolysis is a chemical reaction in which a compound is broken down into smaller molecules through the addition of water.
The case of gay-ala-ser, the peptide bond between glycine and alanine would be broken, followed by the bond between alanine and serine. This would result in the formation of the individual amino acids glycine, alanine, and serine. The order in which the products are listed is based on their alphabetical order. Therefore, the products would be alanine, glycine, and serine. It is important to note that the order in which the products are listed does not indicate the order in which they were produced during the hydrolysis reaction. The complete hydrolysis of the tripeptide Gly-Ala-Ser glycine-alanine-serine would result in the following individual amino acids: alanine, glycine, serine. These amino acids are already listed in alphabetic order and separated by commas, as per your request.
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How do the ramp heights of the different objects compare? How does the ramp height relate to the strength of the frictional force between the book and the object?
Answers
The height of a ramp does not directly determine the strength of the frictional force between a book and an object.
How do they compare?The strength of the frictional force between a book and an object is not directly influenced by the height of a ramp. The nature of the surfaces in contact, the force forcing the surfaces together (normal force), and the coefficient of friction are some of the variables that affect the frictional force between two surfaces.
The coefficient of friction between the book and the object plays a major role in determining the strength of the frictional force.
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You plan to use the water displacement method to
determine if a ring is pure silver. Each of these tools Is
required, EXCEPT
A balance
A stopwatch
A measuring cup filled with water
A density of elements chart
Answers
Answer: A stopwatch
Explanation:
You don’t needed
A student requires all of them except a balance. The correct option is A.
What is the water displacement method?Students calculate the volume of various rods that have the same mass using the water displacement method. Each rod's density is calculated, and the distinctive densities of each material are used to distinguish the five rods.
Then, to explain why various rods have varied densities, students think about the connection between the mass, size, and arrangement of atoms. The periodic table will be briefly introduced to the class.
The volume displacement method is often used to determine the volume of an object with an irregular shape. This technique involves submerging an object into a known amount of water; as a result, the water level will rise.
Therefore, A student requires all of them except a balance. The correct option is A.
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The recommended dose for acetaminophen is 10.0 to 15.0mg/kg of body weight for adults using this guideline calculate the maximum single dosage for a person who weighs 209lb
Answers
Answer:
1422mg of acetaminophen
Explanation:
The maximum dose of acetaminophen is 15.0 mg of acetaminophen per kg of person.
To know the maximum single dosage of the person we need to convert the 209lb to kg (Using 1kg = 2.2046lb):
209lb * (1kg / 2.2046lb) = 94.8
The person weighs 94.8kg and the maximum single dosage for the person is:
94.8kg * (15.0mg acetaminophen / kg) =
1422mg of acetaminophen
Calculate the rcf (recipe conversion factor) for a new yield of 80 oz. (5 lbs) blueberry muffin batter. the original yield of the recipe is 134 oz. (8 lbs 6 oz.). __________ (round to nearest tenth)
Answers
A new yield of 80 ounces (5 lbs) of blueberry muffin batter. The recipe's original yield is 134 oz (8 lbs 6 oz.). The rcf (recipe conversion factor) is equal to 0.6.
What is rcf?The conversion factor method is the most commonly used method for modifying recipes. The only two steps required are to find a conversion factor and multiply the ingredients in the original recipe by that factor. Remember that the conversion factor will be greater than one if you are increasing your amounts to ensure you are correct. If your amounts are reduced, the factor will be less than one. If you come across a recipe written in a standard format, use the conversion factor method.When reductive catalytic fractionation is used, the production of phenolic monomers from lignin is effective and selective (RCF).How this is calculated?
Conversion Factor = New Yield ÷ Old Yield
=80/134
=0.5970
=0.6(rounded to nearest tenth)
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If you have a 4.6 L of gas in a piston at a pressure of 1.2 atm and compress 2p the gas until its volume is 2.6 L, what will the new pressure inside the piston be?
Answers
Answer:
2.12atm
Explanation:
Boyle's Law: P1V1 = P2V2
Manipulate to solve for unknown: P2 = P1V1/V2
Substitute values: P2=(1.2atm)(4.6L)/2.6L
P2 = 2.1230769atm
Round to 3 sig figs to get 2.12atm
Question 5 of 32What is the formula for strontium oxide?
Answers
ANSWER
The formula of strontium oxide is SrO
EXPLANATION
Strontium oxide is formed when strontium reacts with oxygen
Below is the reaction between strontium and oxygen
\(\text{ Sr}_{(s)}\text{ }+\text{ }\frac{1}{2}O_{2(g)}\text{ }\rightarrow\text{ SrO}\)Hence, the formula of strontium oxide is SrO
Calculate the mass of copper(II) oxide produced. Show work!
Cu(OH)2 → CuO + H₂O
FW CuO 79.545 g
g CuO =
Please I need it quickly
Answers
Explanation:
Cu(OH)2 → CuO + H₂O
FW CuO 79.545 g
g CuO = 0.75 mol x 79.545 g/mol = 59.659 g
Calculate the molarity of a solution of 0.030 mol of HCl in 0.15L of solution?
Answers
Answer:
0.20M
Explanation:
Molarity (by definition) = moles / Volume in Liters
∴Molarity = 0.030mol/0.15Liter = 0.20M
The oak tree below is the home where several food chains exist. Birds live in the tree and eat insects they find within the branches. Insects eat parts of the tree like bark and leaves. The transfer of energy moves from the tree to insects and then to the birds. What type of energy provides the oak tree with its energy?
Answers
Answer:
Sunlight' (Solar Light) Energy & water with Carbon Dioxide yield glucose
Explanation:
In the food cycle of trees eaten by insects, & insects eaten by birds -
Sunlight' (Solar Light) Energy & water are used by plants to for the chemical reaction of using carbon dioxide along with formers, to produce glucose (a form of energy) & oxygen.
Answer:
The correct answer is - The oak tree gets energy from the sun as light energy and stored chemical potential energy.
Explanation:
The oak tree absorbs light energy from sunlight which is light energy that is converted into chemical potential energy stored in chemical bonds in the leaves and fruits of the plant.
The tree uses this stored energy to build leaves and branches and fruits and the organism that eat the leaves or fruits of these plants get this chemical potential energy to convert its energy for their cellular functions.
iron (fe) has a density of 7.874 g/cm3 and crystallizes in a body-centered cubic structure. what is the atomic radius of iron? a. 99 pm d. 143 pm b. 114 pm e. 255 pm c. 124 pm
Answers
The atomic radius of iron (Fe) is 124 pm.
Iron (Fe) is a transition metal in group 8 of the periodic table. It has an atomic number of 26, an atomic weight of 55.845 g/mol, and an atomic radius of 124 pm. Iron is a hard, strong, and ductile metal with a silver-gray color.
It is a ferromagnetic material, meaning that it is attracted to magnets and can be magnetized itself. It is also malleable and can be shaped and formed into different forms. Iron is a good conductor of both thermal and electrical energy, and it is also resistant to corrosion. Because of its strength and malleability, iron is used extensively in construction. It is also an important component of many alloys, such as steel.
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In which one of the following species is the central atom (the first atom in the formula) an exception to the octet rule? A) NH3 B) NH4· C) 12 D) BH4, E) SFs
Answers
Among the given species, the central atom that is an exception to the octet rule is BH4.
Here correct option is B.
According to the octet rule, atoms tend to gain, lose, or share electrons in order to achieve a stable electron configuration with eight electrons in their valence shell (except for hydrogen, which can have two electrons). However, there are certain elements or compounds that can have fewer or more than eight electrons around the central atom, known as exceptions to the octet rule.
In the case of BH4 (tetrahydroborate), the central atom is boron (B). Boron is an exception to the octet rule because it has only three valence electrons. Therefore, in order to achieve a more stable electron configuration, boron can form compounds where it has fewer than eight electrons around it.
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Scientific laws commonly answer which questions about the world?
1. Why?
2. How?
3. How many?
4. What?
Answers
Answer:
How
Explanation: In science a person has to be curious on how things work. Key word how. Why makes sense but how is the better answer. How many is a specific question. But it doesn't involve the whole spectrum of science. What also doesn't make sense.
A scientific law is a proposition that states what consistently takes place under specific circumstances. The law of conservation of mass and the law of conservation of energy are two other examples of physical science laws. The correct option is 2.
A scientific law only describes an occurrence in the natural world; it makes no attempt to explain how it happens. It is only the outcome of several observations and is supported by empirical evidence.
The definition of a naturally occurring phenomenon in the world is scientific law. It clarifies how something occurs. Equations or formulas in mathematics are used to express laws.
Thus the correct option is 2.
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The results of an experiment is the:
A. experimental group.
B. independent variable.
C. treatment group.
D. dependent variable.
Answers
the dependent variable is the outcome of the expirament
What general trend does electronegativity follow on the periodic table?
Answers
Answer:
On the periodic table, electronegativity generally increases as you move from left to right across a period and decreases as you move down a group. As a result, the most electronegative elements are found on the top right of the periodic table, while the least electronegative elements are found on the bottom left.
What conditions make AG always positive?
Answers
Answer: when a reaction absorbs heat or decreases the entropy of the system,
Explanation: :)
what are the two kinds of electricity?
1.positive and negative
2.weak and strong
3.north and south
4. current and static
Answers
Answer:
4.Current and static electricity
Explanation:
the combined gas law relates volume and temperature. the combined gas law relates volume and temperature. true false
Answers
True, Combined gas law does relates volume and temperature.
The combined gas law is effectively a restructuring of the ideal gas law, where both n (mols of gas) and R (already a constant) remain constant. It can be used to determine how changes in pressure, volume, or temperature can be used to calculate the conditions of the resulting system.
The combined gas law is a combination of the three previously known laws which are- Boyle’s law PV = K, Charles law V/T = K, and Gay-Lussac’s law P/T = K. Therefore, the formula of combined gas law is PV/T = K,
Where P = pressure, T = temperature, V = volume, K is constant.
One can adjust the formula for the combined gas law so as to compare two sets of conditions in one substance. In the equation, the figures for temperature (T), pressure (P), and volume (V) with subscripts of one are representative of the initial condition. Also, those with the subscripts of two are representative of the final condition.
So we can conclude that the combined gas law relates volume and temperature.
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