Answer:
B
Explanation:
because I've just guessed and you've seen this but when you get this wrong and you see you'll wish you put that down
80 g of sodium hydroxide reacts with excess sulfuric acid to produce 142 g of sodium sulfate. What mass of sodium hydroxide would be needed in order to make 50 g of sodium sulfate? give your answer to one decimal place.
To create 50 grams of sodium sulfate, 28.16 grams of sodium hydroxide are needed.
What is gram?The International System of Units (SI) defines the gram as a unit of mass that is one thousandth of a kilogram. Another concept connected to mass is the gram.
The amount of matter that makes up a substance or an object is truly measured by its mass. The kilogram (kg) is the fundamental SI unit for mass, but lesser quantities are typically measured in grams (g). You would use a balance or perhaps a scale to measure mass.
According to the answer to the previous question, 80 grams of sodium hydroxide and 142 grams of sulfuric acid react to form sodium sulfate. So the amount of sodium hydroxide needed to make 50 grams of sodium sulfate is as follows:
80 × 50 / 142 = 28.16 grams.
To know more about gram visit:
brainly.com/question/11260752
#SPJ4
The noble gas neon is used for filling neon signs. Like other noble elements, it has a full octet (complete outer energy level) of electrons, which makes the gas.
The noble gas neon is used for filling neon signs. Like other noble elements, it has a full octet that is complete outer energy level of electrons, which makes the gas unlikely to combine with the other elements.
The Neon is the noble gas. according to the octet rule the element should contains the 8 valence electrons in the outer most shell to fulfill the octet rule and acquire the stability. the atomic number of the neon is 10 the electronic configuration is given as :
Neon atomic number 10 : [He] 2s² 2p⁶
so, the outermost electrons in the valence shell is 8 . so the noble gas itself very stable . neon does not react with any other elements to gain the stability.
To learn more about noble gas here
https://brainly.com/question/22824931
#SPJ4
Every week, nina used 5 l of water from her rain barrel to water her plants. she did this until her rain barrel was empty. when nina first started watering, her rain barrel contained 75 l of water. which sketch represents this situation?
Assuming that you wanted to find out how long Nina's has been doing her watering activities, you should just simply divide the total amount of barrel with its daily usage. 75/5 = 15 weeks.
Her rain barrel held 75 L of water when she began watering. This indicates that there were 75 L left when she started at 0 weeks.
The first coordinate will therefore be; (0, 75). the y-axis is 75 and the x-axis is 0.
We are informed that she utilised 5 L of water from her barrel each week. Since 5 litres were consumed each week until the barrel was empty, the time it took for the barrel to be empty was 75/5, or 15 weeks.
This indicates that after the water is finished, the y-axis will be 0 L and the x-axis will be 15 weeks (0, 15).
Learn more about activities:
https://brainly.com/question/1744272
#SPJ4
what is the current estimate for the number of photographs snapped in a year? over half-a-trillion over 380 billion nearly one trillion 350 million
The latest estimate for the annual number of photos taken is 1.72 trillion.
In 2022, how many pictures?People are taking more images all around the world, and Rise Above Research, a consulting organization that conducts market research for the digital imaging sector, predicts that the total number of photos taken worldwide will reach 1.5 trillion in 2022.
How many pictures are taken annually?Around the world, 1.72 trillion images are taken annually, or 54,400 each second or 4.7 billion per day. Every year, around 2.3 trillion pictures will be taken by 2030. Photutorial research indicates that 1.2 trillion photos were shot globally in 2021. In 2022, the amount will rise to 1.72 trillion.
To know more about photographs visit:-
https://brainly.com/question/25379778
#SPJ4
If you have 7. 9 x 1024 molecule of methane (CH4), how many mole of methane are preent?
13.11 moles of methane is present in 7.9×[tex]10^{24}[/tex] molecules of methane
The number of moles of a substance is nothing but the the ratio of its given mass in the chemical reaction to the mass of one mole of the substance. One mole of any substance equals Avogadro's number, that is, 6.023×[tex]10^{23}[/tex]. It is also used to express concentration units such as mole per liter or also molecular weight.
Avogadro's number, is the number of units in one mole of any substance , is equal to 6.02214076 × [tex]10^{23}[/tex]. The units can be electrons, atoms, ions, or molecules, depending on the nature of the substance and the character of the reaction as well.
According to Avogadro's law we can say that;
6.023×[tex]10^{23}[/tex] molecules of methane will contain 1 mole of methane.
Then we can calculate the number of moles present in 7.9×[tex]10^{24}[/tex] molecules.
⇒ 7.9×[tex]10^{24}[/tex] = 13.11 moles
6.023×[tex]10^{23}[/tex]
Therefore 13.11 moles are present in the above given question.
To know more about moles
https://brainly.com/question/15061430
#SPJ4
What is the efficiency of a ramp if the input work is 96 J and the output work is 24 J?
The efficiency of the ramp is 0.25 or 25% if the input work is 96 J and output work is 24 J
What is efficiency?This is the output-to-input ratio, which is frequently multiplied by 100 to get a percentage.
Given values: Input work = 96 J, Output work = 24 J
To find: Efficiency of a ramp= ?
Formula used: percent efficiency = (output work/input work) × 100
The efficiency will range from 24 J to 96 J because both the output and the input in this scenario take the form of work.
Percent efficiency = [tex]\frac{24}{96} \times 100[/tex]
= 25%
Learn more about the topic efficiency: https://brainly.com/question/4399149
#SPJ13
Not all of the c−c bond lengths in naphthalene are equivalent. Based on your resonance structures, how many c−c bonds in the molecule do you expect to be shorter than the others?.
The carbon–carbon bonds in naphthalene are not of the equal length. The bonds C₁–C₂, C₃–C₄, C₅–C₆ and C₇–C₈ are about 1.36 Å in length, whereas the other carbon–carbon bonds are about 1.42 Å long.
Explain resonance structure of naphthalene?Naphthalene is two benzene rings joined together. It has three resonance structures. The double bonds present in the benzene ring are delocalized by intramolecular electron transfer to achieve stability. This is called resonance and these structures can be called resonance structures.
The C-C bond length in naphthalene is not the same. This is because naphthalene has a fused ring structure in which two benzene rings are fused. Single and double bonds are alternating, so the lengths of single and double bonds are different.
To know more about naphthalene visit:
https://brainly.com/question/1626413
#SPJ4
Sulfur (S) has an atomic number of 16. What is the ground-state electron configuration of sulfur?
O1s²1p62s²2p6
O1s²2s²2p 3s²3p4
O1s²2s²2p62d6
O 1s²1p61d7
Answer:
It's B
Explanation:
at ground state the atomic number or proton number is equal to the electron number
Normally
the trend for electronic configuration goes as
1s² - 2S² - 2P⁶ -3S² - 3P⁶ -4S² - 3D¹⁰ and so on
(with each number representing a particular energy level and we go from lower to higher energy level)
but for this case we have sulfur
so we go from
1s² - 2S² - 2P⁶ - 3S² - 3P⁴ (I think that was what was supposed to be there not just 2P)
you fill from the lowest energy level to the highest and stop filling when you run out of electrons
since we only had 16 electrons I stopped at 3P⁴
1. List the number of atoms and elements shown below. (4 points total: 1 point each)
Any substance that is resistant to breakdown by common chemical reactions.
What is element?Any substance that is resistant to breakdown by common chemical reactions.The building blocks of which all matter is made are called elements.There are 118 chemical elements that are currently known. About 20% of them have only been created synthetically in the lab and are only known because they do not exist in nature or are only present in trace levels.Of the known elements, 11 are gases under normal circumstances (hydrogen, nitrogen, oxygen, fluorine, chlorine, and the six noble gases), 2 are liquids (two more, cesium and gallium, melt at just above or around room temperature), and the remaining 7 are solids.Elements No. of atoms
[tex]$2 \mathrm{CH}_4$[/tex] 2- Carbon and 8-Hydrogen
[tex]$10 \mathrm{Mg}(\mathrm{OH})_2$[/tex] 10-Magnesium, 20-Oxygen and 20-Hydrogen
[tex]$5 \mathrm{Al}_2\left(\mathrm{SO}_4\right)_3$[/tex] 10- Aluminum, 15- Sulfur and 60- Oxygen
[tex]$3 \mathrm{H}_2 \mathrm{O}$[/tex] 6- Hydrogen and 3- Oxygen
To learn more about element, refer to
brainly.com/question/6258301
#SPJ1
at the end of the citric acid cycle most of the energy originally present in glucose is now found in
At the end of the citric acid cycle most of the energy originally present in at in glucose is now found in NADH , FADH₂ .
At the end of the citric acid cycle most of the energy stored in the glucose found in NADH , FADH₂ . for each glucose molecule 10 NADH and 2 molecules of FADH₂ those are taken for the electron transport chain. At the end of the citric acid cycle the carbon originally present in glucose at CO₂.
Thus, At the end of the citric acid cycle most of the energy originally present in at in glucose is now found in NADH , FADH₂.
To learn more about citric acid cycle here
https://brainly.com/question/24836085
#SPJ4
if you wished to dissolve 10g of sucrose sugar in 1l of h2o, which actions would be helpful? heat stirring heat and stirring neither heat nor stirring
Stirring is only required to dissolve sucrose sugar in water.
What is solubility?
Solubility in chemistry refers to a chemical's capacity to dissolve in another substance, the solvent, to produce a solution. The opposite characteristic, insolubility, refers to the solute's incapacity to create a solution. The solvent is often a solid or a liquid, whereas the solute may be a solid, liquid, or gas. Both could be solution-based compounds or pure chemicals. Except in extremely rare circumstances, gases are always miscible in all ratios, and the only way a solid or liquid may be "dissolved" in a gas is by first becoming gaseous.
Temperature, pressure, and the makeup of the solute and solvent (including their pH and the presence of additional dissolved materials) are the key determinants of solubility.
Sugar dissolves in water because energy is given off when the slightly polar sucrose molecules form intermolecular bonds with the polar water molecules. The weak bonds that form between the solute and the solvent compensate for the energy needed to disrupt the structure of both the pure solute and the solvent.Hence, stirring is only required to dissolve sucrose sugar in water.
To know more about dissolution from the given link
https://brainly.com/question/1493341
#SPJ4
By Which Method is heat transfered through a metal spoon?
Answer: Conduction
Explanation: Conduction is the transfer of heat energy from one substance to another or within a substance. Have you ever left a metal spoon in a pot of soup being heated on a stove? After a short time, the handle of the spoon will become hot.
Answer: it is transferred by conduction.
Explanation:
I took the test
which of the following describes a compound? (hint: carbon and oxegen both appear on the periodic table.) A. a piece of pure cotton, containing only carbon atoms B. oxygen gas surrounding a solid piece of carbon C. a substance made of two oxygen atoms for each carbon atom D. carbon and oxygen atoms mixed whithout being bonded together
Answer:
C. a substance made of two oxygen atoms for each carbon atom
Which of these is one of the ways the media is able to to predict the winners and losers of an election?.
Exit polls are one of the ways the media is able to predict the winners and losers of an election.
Exit polls have historically and in the course of the world been used as a test towards, and hard indicator of, the diploma of election fraud. some examples of this include the 2004 Venezuelan keep in mind referendum and the 2004 Ukrainian presidential election.
A benchmark poll is usually the first ballot taken in a marketing campaign. it's miles often taken before a candidate publicizes their bid for office, but every now and then it happens at once following that assertion after they have had a few possibilities to raise the budget. Polls help citizens study facts approximately each of the applicants. Polls tell the electorate the troubles that applicants assist. Polls discover the pinnacle candidates and the media interview those applicants.
Learn more about Exit polls here:-https://brainly.com/question/25035015
#SPJ4
The following statements were taken from procedures of four different investigations. The statement from which investigation is an example of repetition?
A. investigation 1
b. investigation 2
c. investigation 3
d. investigation 4
The statement from which investigation is an example of repetition is investigation 4. Option D.
Instructions are available in written or recorded form. The purpose of the statement is to summarize the information provided by those involved and prevent it from altering the story of what was witnessed. A hypothesis is a possible answer to a question. It is based on their own observations, existing theories, and information gleaned from other sources.
Scientists use hypotheses to make predictions. This is a testable statement that describes what the outcome of the investigation will be. A theory is a well-documented explanation of an observation. A scientific law is a statement that summarizes the relationships between variables. Experiments are controlled methods of testing hypotheses. A research study is a comprehensive set of techniques used to uncover secrets hidden.
Learn more about Investigation here:-https://brainly.com/question/25257437
#SPJ1
a ground state hydrogen atom absorbs a photon of light having a wavelength of 92.05 nm.92.05 nm. it then gives off a photon having a wavelength of 379.7 nm.379.7 nm. what is the final state of the hydrogen atom? values for physical constants can be found in the chempendix.
Answer:
The final state of the hydrogen atom is ground state after the emission of the photons.
The given parameters;
wavelength of the photon absorbed, λ₁ = 92.05 nm = 92.05 x 10⁻⁹ m
wavelength of the photon emitted, λ₂ = 1736 nm = 1736 x 10⁻⁹ m
The change in the energy of the photon is calculated as follows;
ΔE = hf₂ - hf₁
The new energy level is calculated as follows using Borh's model;
Thus, the final state of the hydrogen atom is ground state after the emission of the photons.
Explanation:
Select the answer with the correct number of significant figures for each calculation. (6.022 × 1023) × 2.58 = 1.55 × 1024 1.554 × 1024 1.5537 × 1024
The correct answer with the correct number of significant figures is 1.554 * 10²⁴; the correct option is B.
What are significant figures?Significant figures refer to each of the digits of a number that are used to express the given number to the required degree of accuracy, beginning from the first non-zero digit.
Significant figures are used to express the accuracy of a given calculation.
Significant figures are also used in the approximation of numbers.
In determining the number of significant figures to be used for a calculation, the level of accuracy required as well as the highest number of significant figures used in the calculation are considered.
Considering the given calculation:
6.022 × 1023 × 2.58
The highest significant figures of number in the calculation is four significant figures.
Hence, the answer will have four significant figures.
6.022 × 10²³ × 2.58 = 1.554 * 10²⁴
Learn more about significant figures at: https://brainly.com/question/24491627
#SPJ1
What happens to a molecule with a bond dipole when the electric field is turned on.
When the electric field is turned on, the dipole moment ends up aligned parallel to the external electric field.
In electromagnetism, dipoles come in two different varieties. In electromagnetic systems, the separation of positive and negative charges is handled by the electric dipole. A pair of charges of equal magnitude and opposing sign that are typically close together is a straightforward illustration of this system. (An electret is a permanent electric dipole.)
In the current system, a magnetic dipole is a closed circuit. A single wire loop with a constant current is a straightforward illustration. The vector quantity dipole moment can be used to describe an electric or magnetic dipole. The electric dipole moment, which in a basic electric dipole points from a negative charge to a positive charge, has a magnitude equal to the sum of the electric charge intensities times the separation between the charges.
When defining the dipole moment, the "dipole limit" should always be taken into account. For instance, in order to maintain the product, the generated charge spacing should converge toward 0 while the charge strength should diverge toward infinity. (Continuous positive)
Learn more about electric field:
https://brainly.com/question/14372859
#SPJ4
a student heats a sample of hydrate once, and the mass of the sample and the evaporating dish is 17.296 g. after a second heating cycle, the mass of the sample and the dish is 14.025 g. the student stops the heat/cool/weigh cycle after the second time. if the original mass of the evaporating dish and the hydrate was 29.936 g, and the mass of the evaporating dish alone was 1.61 g, what is the mass of water removed from the sample by heating? provide your response to three digits after the decimal.
Water weighs is 12.371 g.
What is the amount of water that was heated out of the sample?Mevoporation dish weighs 1.135 g.
Mevoporating dish plus a sample of MHydrate equals 25.637g
Mfirst heated sample plus Mevoporating dish = 16.428g
Mevoporation dish plus a second hot sample equals 13.266g
Salt hydrate mass:Serving of mevoporating = 1.135g
Mhydrated sample + Mevoporating dish = 25.637g
Mevoporating dish g = 25.637-1.135g=24.502g where Mhydrate sample is equal to 25.637g.
Anhydrous salt mass:Serving of mevoporating = 1.135g
Second heated sample from a mevoporating dish weighs 13,266g
Msalt anhydrous = Msecond heated sample = 13.266-Mevoporating dish g = 13.266-1.135g = 12.131g
Volume of water:Msalt anhydrous = 24.502-12.131g=12.371g where Mwater = Mhydrate sample
12.371 g for Mwater
The sample and the dish have a combined mass of 13.266 g following a second heating session. After the second time, the pupil ends the heat/cool/weigh cycle.
To know more about Water salt visit:-
https://brainly.com/question/5306491
#SPJ4
A beaker has a mass of 100g. Liquid is poured into the beaker
The mass of the liquid and the beaker is 135 g. What is the
mass of the liquid?
35g
Explanation:Noting the mass of scientific tools such as beakers can help us take the mass of liquids and other samples that cannot be measured on their own.
Mass of the Liquid
To find the mass of the liquid, we have to know the mass of the beaker. Then, we can subtract the mass of the beaker from the mass of the liquid and beaker combined. This will leave the mass of the liquid.
135 - 100 = 35The liquid has a mass of 35g.
Significant Figures and Units
Whenever doing scientific calculations, it is important to include significant figures and units.
Significant figures show the accuracy of a measurement. When, subtracting numbers, round to the smallest number of decimal places. Neither measurement has decimal points, thus the answer also should not have a decimal point. Thus the answer is just 35.
Then, make sure you have units. Since the original measurements are in grams, the answer should also be in grams. So, the final answer is 35 grams.
Which diagram represents the correct proportion of 87Rb to its decay
product, 87Sr, after two half-lives?
Top left corner is [tex]^{ 87} Rb[/tex] ( Diagram B) represents the correct proportion of 87Rb to its decay product, 87Sr, after two half-lives.
Why is it called half-life radioactive decay?The half life of a radioactive element is the time it takes for half of its original value to decay. This also means that one half life is the time it takes for a source's activity to reduce to half its original value.The half life of a material is an unique word that describes its radioactive decay. The half life of a material is the time it takes for it to lose half of its initial mass due to radioactive decay. This is how radioactive decay and half life are related.To learn more about radioactive decay refer,
https://brainly.com/question/1160651
#SPJ1
An unidentified element has many of the same physical and chemical properties as chlorine and bromine but has a higher atomic mass than either of these elements. What is the most likely identity of this element?.
The maximum probably identification of this element is Beryllium.
Bromine and chlorine belong to the equal organization and consequently have similar chemical houses. The element with atomic wide variety 35 is bromine.
Chlorine and bromine belong to the identical group and consequently have similar residences. extraordinary numbers of neutrons affect the mass variety.
The mass number determines physical houses the atomic range determines chemical houses. consequently, isotopes have similar chemical residences but different bodily homes.
The factors with the most comparable chemical homes are those in the same institution or row of the periodic desk. factors are ordered through atomic variety and become in vertical corporations with the same quantity of valence electrons, in order that they have comparable chemical residences.
Learn more about An unidentified element here:-https://brainly.com/question/17708442
#SPJ4
what is the theoretical yield of iron (55.845 g/mol) when 10.0 g fe2o3 (159.69 g/mol) reacts with excess carbon (12.01 g/mol)?
The theoretical yield of iron (55.845 g/mol) when 10.0 g Fe₂O₃ (159.69 g/mol) reacts with excess carbon (12.01 g/mol) is 6.99 g.
the balance equation is given as :
Fe₂O₃ + 3C ----> 2Fe + 3CO
the mass of Fe₂O₃ = 10 g
molar mass of Fe₂O₃ = 159.69 g / mol
the number of moles of Fe₂O₃ = mass / molar mass
= 10 / 159.69
= 0.062 mol
1 mole of Fe₂O₃ produce 2 mole of Fe
0.062 mol of Fe₂O₃ = 2 × 0.062 = 0.125 mol of Fe
mole of Fe = 0.125 mol
molar mass of Fe = 55.8 g/mol
mass of Fe = 0.125 × 55.5
= 6.99 g
The theoretical yield = 6.99 g
Thus, The theoretical yield of iron (55.845 g/mol) when 10.0 g Fe₂O₃ (159.69 g/mol) reacts with excess carbon (12.01 g/mol) is 6.99 g.
To learn more about theoretical yield here
https://brainly.com/question/1379589
#SPJ4
On a sheet of paper, draw the Lewis structure for the following compound. Please use the periodic table if needed. SiCl4 Sample answer: A central upper S i is bonded in all four directions to upper C l; each upper C l has two electron dots on the 3 sides away from the bond. Check all features below that you included in your Lewis structure. correct number of Si and Cl atoms Si as the central atom line (single bond) between Si and each of the four Cl atoms six dots (electrons) associated with each Cl atom no other lines or dots
Check all features below that you included in your Lewis structure.
correct number of S and Cl atomsS as the central atomline (single bond) between S and each of the two Cl atomssix dots (electrons) associated with each Cl atomfour dots (electrons) associated with the S atomno other lines or dotsChlorine has a higher electronegativity than hydrogen but the attraction of the chlorine atom for electrons is not sufficient to remove an electron from hydrogen. distributed in Polar covalent bonds. Some atoms are exceptions to the octet rule because they have extended octets.
Hydrogen bonds are intermolecular forces acting between ammonia molecules. Due to the difference in electronegativity between the nitrogen and hydrogen atoms, a partial negative charge develops on the nitrogen atom and a partial positive charge develops on the hydrogen atom. Fluorine is the most electronegative of the group 17 elements, and iodine is the least electronegative. Therefore, the electronegativity difference between fluorine and iodine is the largest.
Learn more about Lewis's structure here:-https://brainly.com/question/20300458
#SPJ1
a 25.0-ml sample of hcl is titrated with 0.350 m koh. 34.6 ml of the base are required to reach the equivalence point. what is the molarity of the acid?
When a 25.0-ml sample of HCl is titrated with 0.350 m KOH. 34.6 ml of the base are required to reach the equivalence point. The concentration of HCl is 0.4844 M
The concentration of a substance is the amount of solute contained in a given volume of solution. Concentration is usually expressed in terms of molarity, expressed as the number of moles of solute in 1 L of solution. Solution concentration is the degree to which a solute is dissolved in a given amount of solvent or solution. An enriched response is a response that contains a very large amount of solute.
Concentration of HCl can be calculate as follows:
Titration is the process of determining the amount of substance A by adding measured increments of substance B, the titrant with which it reacts, until exact chemical equivalence is reached (equivalence point).
The formula (Macid x V acid =Mbase x Vbase ) represents the titration formula in chemistry.
M acid x V acid =Mbase x Vbase
Macid =Mbase x Vbase
V acid
Macid = 0.350 M x 34.6mL
25mL
M HCl = 0.4844 M
Therefore, when a 25.0-ml sample of HCl is titrated with 0.350 m KOH. 34.6 ml of the base are required to reach the equivalence point. The concentration of HCl is 0.4844 M
learn more about concentration here https://brainly.com/question/29109830
#SPJ4
how many milliters of 2.5 m hno3 contains enough nitric acid to dissolve an old copper penny with a mass of 3.94 g
25 mL of 2.5 m HNO₃ contains enough nitric acid to dissolve an old copper penny with a mass of 3.94 g
What is molarity?Molarity is a measure of the concentration of a chemical species, especially a solute, in solution and is expressed as the amount of substance per unit volume of solution. The most commonly used unit of molarity in chemistry is moles per liter in SI units using the unit symbols mol/L or mol/dm³.
For the given case,
Molar mass HNO₃ = 63.0 g/mol
Number of moles = 3.94 / 63.0
= 0.0625 moles
Volume = moles / molarity
V = 0.0625 / 2.5
V = 0.025 x 1000
= 25 mL
To know more about molarity visit:
https://brainly.com/question/16727614
#SPJ4
How many o2 molecules are required for two glucose molecules to undergo cellular respiration.
The number of O₂ molecules required for cellular respiration of two glucose molecules would be 12.
What is cellular respiration?Cellular respiration is the process by which biofuels are oxidized in the presence of inorganic electron acceptors, such as oxygen, to produce large amounts of energy and facilitate the mass production of ATP.
During aerobic respiration, 1 molecule of glucose is oxidized to 6 molecules of carbon dioxide with the help of 6 molecules of oxygen. Six water molecules are also formed in the process. Together, all three stages of cellular respiration generate up to 38 molecules of ATP from just one molecule of glucose.
First, let's look at the balanced breathing equation:
C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O
From this formula, there are 6 moles of O₂ for every mole of glucose molecule required for full reaction.
Therefore, two glucose molecules require 6 x 2 = 12 mol of O₂.
To know more about cellular respiration visit:
https://brainly.com/question/13721588
#SPJ4
How do acid and bae interact with water? how doe thi interaction be different for trong acid and weak acid?
Acids give hydrogen ions (H+) to water when they are dissolved in it. The hydrogen atoms that make up hydrogen ions have just one proton left after losing an electron, giving them a positive electrical charge.
What transpires to strong bases and acids in water?Acids and bases dissolve in water and inhibit water dissociation by increasing the concentration of either protons or hydroxide ions, one of the byproducts of water self-ionization.
In an aqueous solution, strong acids and bases are completely ionised. In an aqueous solution, weak acids and bases ionise to a lesser extent. The acidity or basicity of their aqueous solutions can be changed by the salts of weak acids or bases.
Water has the capacity to combine to function as both an acid and a base simultaneously.
learn more about self-ionization refer
https://brainly.com/question/8974149
#SPJ4
what mass of sodium formate, nahco2, must be dissolved in 250.0 ml of 0.100 m formic acid (hco2h) to yield a buffer solution of ph 3.88?
15.13g is the mass of sodium formate, nahco2, must be dissolved in 250.0 ml of 0.100 m formic acid (hco2h) to yield a buffer solution of ph. 3.88
What is Sodium formate?The sodium salt of formic acid, HCOOH, is sodium formate, HCOONa. It typically appears as a fine, white powder. Since formic acid can be produced cheaply and in large quantities by carbonylating methanol and hydrolyzing the ensuing methyl formate, sodium formate is often made by neutralizing formic acid with sodium hydroxide. In the final phase of the production of pentaerythritol and in the crossing Cannizzaro reaction of formaldehyde with the aldol reaction result trimethylol acetaldehyde [3-hydroxy-2,2-bis(hydroxymethyl)propenal], sodium formate is also inevitably produced as a by-product.
pH = pKa + log [base/acid]
3.88 = 3.752 + log (x / 1) {1 comes from the 1.00 M formic acid}
log x = 0.128
x = -0.89 M (molarity)
MV = g/molar mass
(0.89 mol/L) (0.250 L) = x / 68.0069 g/mol
x = 15.13 g
To know more about sodium formate, visit:
https://brainly.com/question/24106296
#SPJ4
Breaking of bonds and intermolecular attractions is always an endothermic process. How is it possible that the dissolving of bonds can emit heat?
Bond breaking is exothermic if more energy is released when we break the bond.
What is bond breaking?We know that a bond is able to hold two or more atoms together. Thus when a bond must be supplied with energy if we want to break the bond. Given that a bond can only be broken when we apply energy to it, we also have to consider the energy difference between the breaking and the making of the bond.
If the energy that is released at the breaking of the bond is higher than the energy that is required to make the bond then the process of the breaking of the bond is exothermic.
Learn more about bond breaking:https://brainly.com/question/14997036
#SPJ1
