Solve an equilibrium problem (using an ice table) to calculate the ph of each solution: part a a solution that is 0.195 m in hc2h3o2 and 0.125 m in kc2h3o2
To calculate the pH of the given solution, use an ICE table to determine the concentrations of HC2H3O2 and C2H3O2-. Substitute these concentrations into the Ka expression to calculate the Ka value. Finally, use the definition of pH to determine the pH of the solution.
Explanation:To calculate the pH of a solution that is 0.195 M in HC2H3O2 and 0.125 M in KC2H3O2, we can use an ICE table. First, we set up the ICE table to determine the concentrations of HC2H3O2 and C2H3O2- at equilibrium. Once we have these concentrations, we substitute them into the Ka expression to calculate the Ka value. Finally, we use the definition of pH to determine the pH of the solution.
Learn more about pH calculation here:https://brainly.com/question/36153729
#SPJ3
HELP PLEASE. STRUGGLING. Which of the following is true in an acidic solution? A)The molarity of hydroxide is double the molarity of hydronium. B)The molarity of hydroxide is equal to the molarity of hydronium. C)The molarity of hydroxide is lower than the molarity of hydronium. D)The molarity of hydroxide is higher than the molarity of hydronium.
In carbon dioxide (CO2), there are two oxygen atoms for each carbon atom. Each oxygen atom forms a double bond with carbon, so the molecule is formed by two double bonds.Two double bonds means that the total number of electrons being shared in the molecule is
A) Two
B) Four
C) Six
D) Eight
Answer: Option (D) is the correct answer.
Explanation:
The atomic number of carbon is 6 and atomic number of oxygen is 8. Therefore, there are 4 valence electrons in carbon and there are 6 valence electrons in oxygen.
Each carbon and oxygen atom shares 4 electrons to form one double bond. It is known that a [tex]CO_{2}[/tex] molecule has 2 double bonds hence, there will be total sharing of 8 electrons.
Thus, we can conclude that two double bonds means that the total number of electrons being shared in the molecule is 8.
Answer:The correct answer is option D.
Explanation:
In carbon-dioxide molecule, there are two oxygen atoms and one carbon atom.
Sharing of two electrons between the atom give rise to single bond.
In single bond = 2 electrons
So, in a double bond = 2 × 2 = 4 electrons
There are two doubles bonds in the carbon-dioxide molecule, so the total number of the electrons ebbing shared in the molecule is =
=4 electrons × 2 = 8 electrons
Hence,the correct answer is option D.
Benzene and its derivatives undergo a type of substitution reaction in which a hydrogen atom is replaced by a substituent, but the stable aromatic benzene ring is regenerated at the end of the mechanism.
When octane is burned in air, it chemically reacts with oxygen gas o2 to produce carbon dioxide co2 and water h2o ?
Uranium-233 undergoes alpha decay, and then the daughter isotope undergoes another alpha decay. Which equation correctly describes this decay series? Use the periodic table link from the tools bar to answer the question.
Explanation:
Alpha decay: In this process, alpha particles is emitted when a heavier nuclei decays into lighter nuclei. The alpha particle released has a charge of +2 units.
The general alpha decay reaction is given as:
[tex]_Z^A\textrm{X}\rightarrow _{Z-2}^{A-4}\textrm{Y}+_2^4\alpha[/tex]
[tex]_{92}^{233}\textrm{U}\rightarrow _{90}^{229}\textrm{Th}+_2^4\alpha[/tex]
[tex]_{90}^{229}\textrm{Th}\rightarrow _{88}^{225}\textrm{Ra}+_2^4\alpha[/tex]
When Uranium-233 undergoes alpha decay it splits into an alpha particle and thorium-229.Thorium-229 further undergoes alpha decay to produce radium-225 along with an alpha particle.
During hydrolysis, ___________ must be added before the bonds can be broken. (look at flash animation on hydrolysis)
The correct answer is water.
During hydrolysis, _____water______ must be added before the bonds can be broken.
For example, sucrose undergoes hydrolysis to break into glucose and fructose. Here sucrose is a disaccharide and glucose and fructose are monosaccharides.
Sucrose + H₂O → glucose + fructose
Esters are formed by the combination of carboxylic acid and alcohol.
But the hydrolysis of ester causes the release of carboxylic acid and alcohol.
RCOOR'(ester) + H₂O → RCOOH(carboxylic acid) + R'OH(alcohol)
Calculate the number of moles of magnesium used in trial 1. the molar mass of magnesium is 24.305 g/mol.
Final answer:
To calculate the number of moles of magnesium, divide the mass of magnesium used in the trial by its molar mass of 24.305 g/mol. An example calculation for 24.305 grams of magnesium would yield exactly 1 mole of magnesium.
Explanation:
To calculate the number of moles of magnesium used in trial 1, you should use the molar mass of magnesium and the given mass of magnesium from the trial. If the mass of magnesium used in trial 1 was not provided in the question, it must be known to perform the calculation.
Here's how you can calculate it:
First, ascertain the mass of magnesium used in trial 1 (let's assume it is 'x' grams).
Then, use the molar mass of magnesium which is 24.305 g/mol.
Divide the mass of magnesium by its molar mass to find the number of moles: Number of moles = mass of magnesium (grams) / molar mass of magnesium (g/mol).
For example, if you used 24.305 grams of magnesium in trial 1, the calculation would be:
Number of moles = 24.305 g / 24.305 g/mol = 1 mol
Calculate the mass of 0.00456 moles of (NH4)2SO4
Mass of (NH4)2SO4 is 0.6025g
Finding the mass of a compoundUsing the equation:
Number of moles = Mass /Molar Mass
Given,
0.00456 as Number of moles of (NH4)2SO4
and Molar mass as
N = 14.007 g/mol=2(14.007)
H = 1.008 g/mol= 8(1.008)
S = 32.065 g/mol= 32.065
O = 16 g/mol= 4(16)
(NH4)2SO4 = 132.143 g/mol
Mass of (NH4)2SO4 = 132.143 g/mol x 0.00456=0.6025g
See related answer on Finding mass when moles is given:https://brainly.com/question/13015854
Molecules containing a large number of hydroxyl groups are
When looking at the percentage of patients whose symptoms were relieved after taking a placebo, a scientist sees a 20% success rate. The success rate of patients whose symptoms were relieved after taking a new composite drug was 30%. The scientist determines that the margin of error is 10%, which indicates that the new drug had no statistically significant positive effect. In which stage of the engineering process is this scientist?
A. Evaluating test results
B. Screening
C. Identifying a need
D. Looking for future improvements
Answer:
A. Evaluating test results
Explanation:
Took the class.
If 4.35 grams of zinc metal react with 35.8 grams of silver nitrate, how many grams of silver metal can be formed and how many grams of the excess reactant will be left over when the reaction is complete? Show all of your work. unbalanced equation: Zn + AgNO3 yields Zn(NO3)2 + Ag
Which characteristics apply to the gaseous state? i. low density ii. high density iii. rapid molecular motion iv. slow molecular motion v. large distance between particles?
The characteristics applicable to gaseous state are low density, rapid molecular motion and large distance between particles.
What are the characteristics of gaseous state?Substances in gaseous state are easy to compress as they have large inter- molecular distances.They also have the unique property of expansion owing to which large amounts of gases can fit into small volumes.
As gases occupy large volumes as compared to their masses they have low density.Owing to their large inter-molecular spaces they have more degree of freedom due to which there is rapid molecular motion.
The kinetic energy possessed by gas molecules is highest in gases due to large spaces present between the molecules.They have high thermal energy as molecules are far apart and heat causes molecules to move faster.
Learn more about characteristics of gases,here:
https://brainly.com/question/10014242
#SPJ2
What is the ph of a 2.7 m solution of hclo4?
The concentration of H+ ions in the solution of 2.7 molar HClO₄ is 2.7 molar. Thus the pH of the acid is -0.43.
What is PH?pH of a solution is the measure of its H+ ions concentration. It determines how much acidic or basic the solution is. Mathematically it is the negative logarithm of H+ ion concentration.
A pH of 7 indicates that the solution is neutral and a pH below 7 is acidic and pH of above 7 is for basic solution. Thus strong acids such as chloric acid HClO₄ , have a pH very less. But it depends on the concentration of solute in the solution.
Given that the molarity of the acid is 2.7 molar. It furnish equal number of moles H+ ions and anions. Thus the concentration of H+ ion is 2.7 M.Now the pH is calculated as follows:
pH = -log [H+]
= -log (2.7)
= -0.43
Hence, the pH of the solution is -0.43.
To find more about pH refer the link:
https://brainly.com/question/491373
#SPJ5
Which activity can occur without the use of energy?
The feed to a batch process contains equimolar quantities of nitrogen and methane. write an expression for the kilograms of nitrogen in terms of the total moles n(mol) of this mixture.
How many grams of h3po4 are in 521 ml of a 9.30 m solution of h3po4?
Final answer:
To find the mass of H3PO4 in 521 ml of a 9.30 M solution, convert the volume to liters, multiply by the molarity to get moles, and then convert moles to grams using the molar mass of H3PO4. Approximately 474.6434 grams of H3PO4 are in 521 ml of a 9.30 M solution.
Explanation:
The student has asked how many grams of H3PO4 are in 521 ml of a 9.30 M solution. To find this, we use the formula:
Calculate the number of moles of H3PO4 by multiplying the molarity (M) of the solution by the volume of the solution in liters.
Convert the moles of H3PO4 to grams using the molar mass of H3PO4 (which is approximately 98 g/mol).
First, we convert 521 ml to liters (521 ml * 0.001 L/ml = 0.521 L). Next, we calculate the moles of H3PO4 (9.30 M * 0.521 L = 4.8433 mol). Finally, we multiply the number of moles by the molar mass of H3PO4 to get the mass in grams (4.8433 mol * 98 g/mol = 474.6434 g).
Therefore, there are approximately 474.6434 grams of H3PO4 in 521 ml of a 9.30 M solution.
A scientist observes several metals and records the followinv data.which of the data sets represents qualitative data?A The máss of the metals B The volume de the metal C the softness de the metal D the color of the metals
When does a scientists create the conclusion
Under conditions where ketone bodies are being produced in the liver, how many atps can be produced from a molecule of palmitic acid if all resulting molecules of acetyl-coa are converted into β-hydroxybutyrate
129 molecules of ATP is produced if all resulting molecules of acetyl-coa are converted into β-hydroxybutyrate.
What is Beta oxidation?This is a metabolic process involving multiple steps by which fatty acid molecules are broken down to produce energy.
Palmitic acid is a 16 carbon fatty acid and undergoes 7 beta-oxidation reactions which is shown below
7 NADH + 7 FADH2 + 8 acetyl-CoA
Acetyl-CoA being converted to acetoacetate with β-hydroxybutyrate being the reduced form.
The average ATP production is 131 minus 2 ATP which was used up for the initial activation of every fatty acid thereby bringing the amount to 129ATP.
Read more about Beta oxidation here https://brainly.com/question/7210431
How much dioxin is present in 2.6 l of this water? assume a density of 1.00 g/ml?
The amount of dioxin in the water cannot be calculated without knowing the concentration of dioxin. However, the mass of the water sample can be determined using the given volume and the density of water.
Explanation:To calculate the amount of dioxin in your water sample, you would first need to know the concentration of dioxin in the water. However, assuming a density of 1.00 g/ml, you can calculate the mass of your water sample as follows: Water sample volume is 2.6 L (or 2600 ml). Given the density of water is 1.00 g/ml, we can use the formula Density = Mass/Volume or rearranged to Mass = Density x Volume to get: Mass = 1.00 g/ml x 2600 ml = 2600 g. So, the mass of the water is 2600 g. To get the amount of dioxin, we need the concentration of dioxin in the water (usually given in parts per million or ppm)
Learn more about Dioxin Concentration here:https://brainly.com/question/10446966
#SPJ12
Classify each salt as acidic, basic, or neutral. drag the appropriate items to their respective bins. hints hint 1. how to approach the problem(click to open) hint 2. identify the cations from weak bases(click to open) hint 3. identify the anions from weak acids(click to open) helpreset nh4clnaclokno3 neutral salts acidic salts basic salts
Answer:
[tex]NH_4Cl[/tex] -> Acidic
[tex]NaClO[/tex] -> Basic
[tex]KNO_3[/tex] -> Neutral
Explanation:
Hello,
In this case, considering the given salts, [tex]NH_4Cl[/tex], [tex]NaClO[/tex], [tex]KNO_3[/tex] one classifies them as follows:
- [tex]NH_4Cl[/tex]: ammonium chloride is an acidic salt since it comes from ammonium hydroxide which is a weak base and hydrochloric acid which a strong base, thus, due to the partial neutralization, there are still traces of an acidic character which provides such behavior for this salt.
- [tex]NaClO[/tex]: sodium hypochlorite is a basic salt since it comes from sodium hydroxide which is a strong base and hypochlorous acid which is a weak acid by means of the contrary behavior of the [tex]NH_4Cl[/tex] since traces of a basic character promote such basic behavior.
- [tex]KNO_3[/tex]: potassium nitrate is a neutral salt as long as it comes from the potassium hydroxide which is a strong base and the nitric acid which is a strong acid, promoting the complete neutralization.
Best regards.
NH4Cl, NaCl, and KNO3 are classified as acidic, neutral, and basic salts, respectively. This classification depends on their behavior when dissolved in water, resulting in either acidic, neutral, or basic solutions.
Explanation:Classification of Salts
In chemistry, salts such as NH4CL, NaCl, and KNO3 are all ionic compounds that can be classified as either acidic, basic, or neutral. This classification depends on their behavior when dissolved in water, in a process known as hydrolysis.
NH4Cl ionizes in water to yield NH4+ and Cl- ions. The NH4+ ions can act as an acid by donating a proton (H+) to water to generate hydronium ions (H3O+), leading to an acidic solution. Therefore, NH4Cl is an acidic salt.
In contrast, NaCl behaves differently. When it dissolves in water, it releases Na+ and Cl- ions. Neither of these ions reacts with water, making NaCl a neutral salt.
Finally, salts like KNO3, which produce a base and a neutral component upon dissolution, are considered basic salts because they make the solution slightly more alkaline.
Learn more about Salt Classification here:https://brainly.com/question/33820412
#SPJ6
What is the name of the compound with the chemical formula v(clo3)3? spelling counts, but capitalization and spaces do not?
Answer:
Two options: vanadium (III) chlorate or vanadic chlorate.
Explanation:
Hello,
In this case, V accounts for vanadium, Cl for chlorine and O for oxygen. Now, as you've got v(clo3)3, one should write it with the proper capitalization:
[tex]V(ClO_3)_3[/tex]
In such a way, the name depends on the oxidation states of both vanadium and chlorine. At first, one realizes that vanadium has +3 as the oxidation state as all the oxyanions formed by chlorine have -1 as the total charge. Now, the anion [tex]ClO_3[/tex] suggests that the chlorine has +5 as the oxidation state for it to has a total oxidation state of -1, in such a way, by following the IUPAC rules, one states is name as vanadium (III) chlorate or vanadous chloride. For the spelling, procure to respect spaces and to use lower cases for the resulting names.
Best regards.
Which separation method would be most successful in separating the components of a homogeneous mixture?
A) Screening
B) Evaporation
C) Centrifugation
D) Magnetic Separation
Answer: Option (B) is the correct answer.
Explanation:
When a liquid changes into vapors or gas then this process of change is known as evaporation.
A mixture in which solute particles completely dissolve in even composition throughout the solvent then it is known as homogeneous mixture.
For example, when salt is dissolved in water then upon heating it water can be evaporated and crystals of sodium chloride can be obtained.
Whereas screening method is used in the discovery of a drug and it a scientific experimentation method.
When particles of a mixture are separated by spinning then this process is known as centrifugation.
When a magnetic force is used to separate magnetic particles present in a mixture then this process is known as magnetic separation.
Thus, we can conclude that evaporation is the separation method would be most successful in separating the components of a homogeneous mixture.
24 what is the correct name for the compound cocl?
colbalt(III) chloride
The correct name for the compound CoCl is cobalt (III) chloride composed of cobalt and chlorine atoms.
What is a compound?Compound is defined as a chemical substance made up of identical molecules containing atoms from more than one type of chemical element.
Molecule consisting atoms of only one element is not called compound.It is transformed into new substances during chemical reactions. There are four major types of compounds depending on chemical bonding present in them.They are:
1)Molecular compounds where in atoms are joined by covalent bonds.
2) ionic compounds where atoms are joined by ionic bond.
3)Inter-metallic compounds where atoms are held by metallic bonds
4) co-ordination complexes where atoms are held by co-ordinate bonds.
They have a unique chemical structure held together by chemical bonds Compounds have different properties as those of elements because when a compound is formed the properties of the substance are totally altered.
Learn more about compound,here:
https://brainly.com/question/13516179
#SPJ5
B) into the same funnel is poured carefully 50 ml of hexane (density = 0.660 g/ml) so that the other two layers are not disturbed. the hexane forms a third layer. the funnel is stoppered and the mixture is shaken vigorously. after standing, two layers separate. which compound(s) are in which layer?
When 8 moles of lithium metal react with excess oxygen gas, how many moles of lithium oxide can be produced? 4Li + 2O2 → 2Li2O
which element has atoms that can form single, double, and triple covalent bonds with others atoms of the same element
Calcium’s atomic number is 20. it forms ions with 18 electrons. what is the electrical charge of a calcium ion?
Calcium, with an atomic number of 20, forms ions by losing 2 electrons, leaving it with 18 electrons and 20 protons. This gives it a net charge of +2.
Explanation:The electrical charge of a calcium ion can be determined by looking at its number of electrons compared to its atomic number. Calcium's atomic number is 20, meaning it has 20 protons and normally 20 electrons. However, the question states that it forms ions with 18 electrons, so it has lost 2 electrons to become a calcium ion.
When an atom loses electrons, it becomes positively charged. Since calcium has lost 2 electrons, its electrical charge is +2.
Therefore, the electrical charge of a calcium ion is +2.
Learn more about Calcium ions here:https://brainly.com/question/31830797
#SPJ2
of the following, ____ has the lowest boiling point
cl2
o2
n2
h2