calculate the formula mass of the unknown acid using the manual titration volume of naoh used to reach an endpoint (procedure step

the concentration of the [tex]HNO_3[/tex] solution is 0.0410M when a 0.105 L sample of an unknown [tex]HNO_3[/tex] solution required 43.1 mL of 0.100 M [tex]Ba(OH)_2[/tex] for complete neutralization.

Given the volume of sample of [tex]HNO_3[/tex] = 0.105L

The concentration of [tex]Ba(OH)_2[/tex]= 0.10M

The volume of solution of [tex]Ba(OH)_2[/tex] = 43.1mL

The concentration of [tex]HNO_3[/tex] be = M1

The reaction is as follows:

[tex]HNO_3 + Ba(OH)_2 -- > Ba(NO_3)_2 + H_2O[/tex]

Since the molar ratio of [tex]HNO_3[/tex] to [tex]Ba(OH)_2[/tex] is 1:1, we can calculate the amount of [tex]HNO_3[/tex] in the sample by multiplying the moles of [tex]Ba(OH)_2[/tex] used to neutralize. Molarity(M) = number of moles(n)/volume of solution(V)

M1V1 = M2V2 such that:

[tex]M1 * 0.105 * 10^3 = 0.10 * 43.1[/tex]

Molarity of [tex]HNO_3[/tex](M1) = (43.1 mL x 0.100 M [tex]Ba(OH)_2[/tex]) / 0.105 L)

Molarity of [tex]HNO_3[/tex](M1) = 0.041 M

To learn more about neutralization click here https://brainly.com/question/14156911

#SPJ1

The compound which represents the molecular formula with a scale factor of 2 is [tex]C_6H_8O_6[/tex] . The correct answer is option A

The empirical formula of a compound gives the simplest whole-number ratio of the atoms present in the compound. To obtain the molecular formula, we need to know the actual number of atoms in the molecule.

To find the molecular formula with a scale factor of 2, we need to multiply the subscripts in the empirical formula by 2.

Therefore, the molecular formula with a scale factor of 2 would be:

[tex]C_3H_4O_3[/tex] × [tex]2[/tex]  = [tex]C_6H_8O_6[/tex]

So option A is the correct answer.

For more such questions on molecular formula, click on:

https://brainly.com/question/26388921

#SPJ11

The query doesn't include the chemical balance or table you mentioned. In order for me to assist you in finding the answer to your inquiry, kindly supply more details or enclose the necessary chemical equation and table.

Equilibrium constant for the reaction between NH3 and water. Ammonia functions as a base when dissolved in water. Ammonium and hydroxide ions are produced after it takes hydrogen ions from water.

Although ammonia does not naturally include hydroxide ions, when it is dissolved in water, it absorbs hydrogen ions from the water and produces both hydroxide and ammonium ions.

To know more about chemical balance visit:-

https://brainly.com/question/30087623

#SPJ1

Lead damages the brain and central nervous system at high exposure levels, resulting in unconsciousness, convulsions, and even death. These are effects of lead poisoning.

Up to 800 million children worldwide, or close to one third of all children, suffer from lead poisoning. A child's developing brain is impacted by lead, which results in diminished IQ, behavioral abnormalities, and learning issues that can lower potential earnings in adulthood.

The Safe Drinking Water Act (SDWA) reduced the maximum permitted lead level, or "lead-free" content, to a weighted average of 0.25 percent calculated over the wetted surfaces of pipes, pipe fittings, plumbing fixtures, and fixtures, and 0.2 percent for solder and flux.

To learn more about lead poisoning visit:

brainly.com/question/3437008

#SPJ1

Why is lead toxic to the body? How much lead is legally allowed in the drinking water in the US? How is it possible that lead poisoning affects the future generations?

Around 6.14 x [tex]10^{24}[/tex] g of magnesium bromate has the same mass as 10.00 g of sodium bromite and the same amount of oxygen atoms.

Writing down the chemical formulas for magnesium bromate and sodium bromite is the first step in solving this issue. Next, we must determine the mass of magnesium bromate that has the same amount of oxygen atoms as 10.00 g of sodium bromite using the mole ratio.

The compounds' chemical formulae are as follows:

Bromate of magnesium: Mg (BrO3)2

Bromite of sodium: NaBrO2

The molar mass and Avogadro's formula can be used to determine how many oxygen atoms are present in 10.00 g of sodium bromite.

NaBrO2 has a molar mass of 102.89 g/mol.

10.00 g divided by 102.89 grammes per mole yields 0.097 moles.

The formula for the number of oxygen atoms in 0.097 mol is 0.097 mol x 2 mol O / 1 mol. O = 0.194 mol NaBrO2

In 10.00 g of NaBrO2, there are 1.17 x [tex]10^{23}[/tex] oxygen atoms, which is equal to 0.194 mol x 6.022 x [tex]10^{23}[/tex] molecules/mol.

Mg(BrO3)2 molecules each contain six oxygen atoms.

1.17 x [tex]10^{23}[/tex] O atoms divided by 6 molecules' worth of Mg(BrO3)2 results in 1.95 x [tex]10^{22}[/tex] molecules of Mg(BrO3)2.

1.95 x [tex]10^{22}[/tex] molecules of Mg(BrO3)2 weigh 6.14 x [tex]10^{24}[/tex] g when multiplied by the molecular weight of 314.70.

To learn more about magnesium bromate visit:

brainly.com/question/9171023

#SPJ9

5.00mL the equivalence volume in the titration of 25.0 mL of 0.010 0 M methylammonium chloride with 0.050 0 M tetramethylammonium hydroxide.

To find the equivalence volume, we need to first determine the moles of methylammonium chloride (MAC) present in the initial solution:

moles of MAC = (25.0 mL)(0.0100 M) = 0.250 mmol

Since the stoichiometry of the reaction is 1:1 between MAC and tetramethylammonium hydroxide (TMAH), the equivalence point occurs when 0.250 mmol of TMAH has been added:

moles of TMAH = (0.250 mmol)/(1000 mL/L) = 0.000250 mol

Now we can calculate the volume of TMAH required to reach the equivalence point:

0.000250 mol / 0.050 0 M = 5.00 mL

Therefore, the equivalence volume is 5.00 mL.

To calculate the pH at different points in the titration, we can use the Henderson-Hasselbalch equation:

pH = pKa + log([A-]/[HA])

At Vo=0, we have only MAC present, so [A-] = 0 and [HA] = 0.0100 M. Therefore:

pH = 10.645 + log(0.000/0.0100) = 10.645

At Vo=2.50 mL, we have added some TMAH, but have not yet reached the equivalence point. We can calculate the concentrations of the acid and conjugate base using the stoichiometry of the reaction and the amount of TMAH added:

moles of TMAH added = (2.50 mL)(0.050 0 M) = 0.000125 mol

moles of MAC remaining = 0.250 mmol - 0.000125 mol = 0.249875 mol

moles of MAC converted to MAC+ = 0.000125 mol

moles of MAC+ = 0.249875 mol

Now we can calculate the concentrations of the acid and conjugate base:

[HA] = (0.249875 mol / 0.0250 L) = 0.009995 M

[A-] = (0.000125 mol / 0.0275 L) = 0.00455 M

Using the Henderson-Hasselbalch equation:

pH = 10.645 + log(0.00455/0.009995) = 10.073

Similarly, we can calculate the pH at Vo=5.00 mL and Vo=10.00 mL:

At Vo=5.00 mL:

moles of TMAH added = (5.00 mL)(0.050 0 M) = 0.000250 mol

moles of MAC remaining = 0.250 mmol - 0.000250 mol = 0.249750 mol

moles of MAC converted to MAC+ = 0.000250 mol

moles of MAC+ = 0.249750 mol

[HA] = (0.249750 mol / 0.0250 L) = 0.009990 M

[A-] = (0.000250 mol / 0.0300 L) = 0.00833 M

pH = 10.645 + log(0.00833/0.009990) = 9.899

At Vo=10.00 mL:

moles of TMAH added = (10.00 mL)(0.050 0 M) = 0.000500 mol

moles of MAC remaining = 0.250 mmol - 0.000500 mol = 0.

To learn more about methylammonium chloride visit;

https://brainly.com/question/31166333

#SPJ4

3.0 mol of [tex]CO_2[/tex] are produced by the process.

To solve this problem, we need to use the balanced equation for the reaction:

[tex]2CO(g) + O_2(g) \rightarrow 2CO_2(g)[/tex]

Every carbon dioxide molecule has a covalent double bond between one carbon and two oxygen atoms, giving it a chemical formula [tex]CO_2[/tex]. Atmospheric [tex]CO_2[/tex]  is the primary source of usable carbon in the carbon cycle.is present in the gaseous state at room temperature and is the main carbon source for life on Earth.

We know that 9.0 L of [tex]O_2[/tex] react with excess CO, so we can use the ideal gas law to calculate the number of moles of [tex]O2[/tex]:

[tex]n =\frac{ PV}{RT}\\n = \frac{(9.0 L)(1.0 atm)}{(0.0821 L .atm/K.mol)(273 K)}[/tex]

[tex]n = 3.0 mol \ O_2[/tex]

Now, we can use the stoichiometric ratio from the balanced equation to calculate the number of moles of [tex]CO_2[/tex] that form during the reaction:

[tex]nCO_2 = (2 mol O_2)(\frac{1 mol CO2}{2 mol O_2})\\\\\nCO2 = 3.0 mol CO_2[/tex]

Therefore, 3.0 mol [tex]CO_2[/tex] (carbon dioxide) form during the reaction.

learn more about Carbon dioxide Refer:brainly.com/question/304955

#SPJ1

The heat absorbed by the calorimeter is 2222.2 J when a metal object with a mass of 33.6 g is heated to 95.8°C and then transferred to a calorimeter containing 100.0 g of water at 17.4°C, with the final temperature of the water and metal being 23.8°C.

What is the heat absorbed by the calorimeter when a metal object is heated and transferred to water in a calorimeter?

To solve this problem, we can use the equation:

Q = m * c * ΔT

where Q is the heat absorbed or released, m is the substance's mass, c is the specific heat capacity, and T is the temperature change

First, we can calculate the heat absorbed by the metal object when it is heated from its initial temperature to the final temperature:

Qmetal = m * cmetal * ΔTmetal

Qmetal = 33.6 g * (0.385 J/g°C) * (23.8°C - 95.8°C)

Qmetal = -3684.4 J

Here, we have used a negative sign because the metal object loses heat to the surroundings.

Next, we can calculate the heat absorbed by the water and calorimeter when they are cooled from their initial temperature to the final temperature:

Qwater = (mwater + mcalorimeter) * cwater * ΔTwater

Qwater = (100.0 g + 50.0 g) * (4.184 J/g°C) * (23.8°C - 17.4°C)

Qwater = 1462.2 J

Here, we have used the combined mass of water and calorimeter, since they both experience the same temperature change.

Finally, we can use the principle of conservation of energy to equate the heat absorbed by the metal to the heat absorbed by the water and calorimeter:

Qmetal = -Qwater

-3684.4 J = -1462.2 J + Qcalorimeter

Solving for Qcalorimeter, we get:

Qcalorimeter = 2222.2 J

Therefore, the heat absorbed by the calorimeter is 2222.2 J.

To learn more about calorimeter, visit: https://brainly.com/question/1407669

#SPJ1

With one of those pieces of information, we could use the Ideal Gas Law (PV = nRT) to calculate the volume of the gas at STP.

What is STP?

STP stands for Standard Temperature and Pressure. It is defined as a temperature of 0 °C (273.15 K) and a pressure of 1 atmosphere (atm). This is the standard set of conditions used for comparing and measuring gases. At STP, 1 mole of any gas occupies a volume of 22.4 liters.

We need additional information to calculate the volume of the gas in cylinder B at STP. We would need to know either the pressure, volume, and temperature of the gas in cylinder B at its current state or the number of moles of gas in cylinder B.

Learn more about STP from the given link

https://brainly.com/question/2783971

#SPJ1

An external anatomical feature called the beak, bill, or rostrum is usually present in birds but can also be seen in turtles, non-avian dinosaurs, a few mammals, and other animals.

These are frequent birds in parks, forests, cities, and rural settings all over the eastern and southeastern United States. Red can be seen on the rear of the head and at the base of the bill in female red-bellied woodpeckers.

The parrot is a lovely bird. It has long green feathered tail, lovely green wings, and silky green feathers covering its body. The ruby beak of the parrot is its most alluring characteristic.

To know more about anatomical feature visit:-

brainly.com/question/27009857

#SPJ1

Answer:

Water participates both in the dissolution and formation of Earth's materials. The downward flow of water, both in liquid and solid form, shapes landscapes through the erosion, transport, and deposition of sediment. Shoreline waves in the ocean and lakes are powerful agents of erosion.

Answer:

the volume of a gas is changed from ___ mL to 852 mL, the temperature will change from 588 K to 725 K.V(volume) = [?] mLAssume that the number of moles and the pressure remain constant.To find the initial volume of the gas, we can use the combined gas law, which states that: (P1V1)/T1 = (P2V2)/T2 We are given the initial temperature T1 = 588 K and the final temperature T2 = 725 K. We are also told that the number of moles and the pressure remain constant, so we can assume that P1 = P2 and n1 = n2. Let's plug in the values we have: (P1V1)/588 = (P1*852)/725 Simplifying this equation, we can isolate V1: V1 = (588*852)/725 V1 = 691.2 mL Therefore, the initial volume of the gas was 691.2 mL.

In the context of this problem, we can utilize Charles's Law which states the volume of a gas is directly proportional to its absolute temperature. We solve for the unknown volume (V1) using the provided values and the formula derived from Charles's Law. The estimated answer is approximately 686 mL.

The subject of your question involves the concept of gas laws specifically the Charles's Law which states that the volume of a gas is directly proportional to its absolute temperature, provided the number of moles and pressure remain constant. In this scenario, we can apply Charles's Law as both the number of moles and pressure are constant. To find the unknown volume, we should use the formula (V1/T1) = (V2/T2), where V1 is the unknown volume, T1 is the initial temperature, V2 is the final volume and T2 is the final temperature. In this case, the question left V1 blank, T1 is 588K, V2 is 852 mL and T2 is 725K. So its critical to ensure that temperatures are in Kelvin.

Arranging the formula to solve for V1, we have: V1 = (V2 * T1) / T2. Substituting the given values, we get: V1= (852 mL * 588 K) / 725 K = 685.9 mL

Therefore, the unknown volume V1, when the gas was initially at a temperature of 588K, would be approximately 686 mL.

https://brainly.com/question/35451979

#SPJ2

Answer:

The correct answer is 1.19 moles Cr

Explanation:

We can use Avogadro's number, which is 6.022 x 10^23 particles (atoms or molecules) per mole, to convert the given number of atoms to moles.

Number of moles = Number of atoms / Avogadro's number

Number of moles = 7.22 x 10^23 / 6.022 x 10^23

Number of moles = 1.199 moles (rounded to three significant figures)

Therefore, the number of moles of chromium is approximately 1.19 moles Cr.

Answer:

Explanation:

To calculate the number of moles of chromium, we need to use Avogadro's number, which is defined as the number of atoms in 12 grams of carbon-12. Avogadro's number is approximately 6.022 x 10^23 atoms per mole.

Given that we have 7.22 x 10^23 atoms of chromium, we can calculate the number of moles of chromium using the following formula:

moles of chromium = number of atoms of chromium / Avogadro's number

moles of chromium = 7.22 x 10^23 / 6.022 x 10^23

moles of chromium ≈ 1.20

Therefore, we have approximately 1.20 moles of chromium.

The CVS Health brand antacid liquid is more effective at neutralizing stomach acid per dose because it contains more OH− ions, which are more effective at neutralizing stomach acid.

[tex]Al(OH)_3[/tex] and [tex]Mg(OH)_2[/tex] are both alkaline substances that can neutralize stomach acid by reacting with hydrogen ions. [tex]Al(OH)_3[/tex] is more effective at neutralizing stomach acid than [tex]CaCO_3[/tex], since it contains more OH− ions than [tex]CaCO_3[/tex]. Additionally,[tex]Mg(OH)_2[/tex] is more effective at neutralizing stomach acid than [tex]CaCO_3[/tex], as it contains twice as much OH− ions as [tex]CaCO_3[/tex]. Therefore, the CVS Health brand antacid liquid contains more OH− ions per dose than Rolaids Extra Strength, making it more effective at neutralizing stomach acid.

learn more about alkaline Refer:brainly.com/question/30402383

#SPJ1

Answer:

burning fossil fuels, like coal.

Explanation:

Generated greenhouse gases which trap heat in the Earth.

The retrosynthesis of 3-amino-2-fluoro cyclopentane from cyclopentane involves the oxidation of the cyclopentane to a cyclo-pentanol, followed by a reductive amination with an amine.

Retrosynthesis is the process of retrograde synthesis, or breaking of a molecule into its component parts in order to determine how it was synthesized.

The first step in the synthesis is to functionalize the cyclopentane. It is done by oxidizing the cyclopentane to a cyclo-pentanol using a reagent such as sodium periodate and then reductively aminating the cyclo-pentanol with an amine, such as aniline, to give 3-amino-2-fluoro cyclopentane.

The oxidation of the cyclopentane to a cyclo-pentanol can be done by treating the cyclopentane with sodium periodate. This will oxidize the cyclopentane to a cyclo-pentanol, which will then be reduced with an amine, such as aniline, to form 3-amino-2-fluoro cyclopentane.

Finally, the 3-amino-2-fluoro cyclopentane can be fluorinated using a reagent such as fluoro-borane ([tex]B(C_6F_5)_3[/tex]) to give the desired product.

To learn more about cyclopentane click here https://brainly.com/question/29115552

#SPJ1

Answer:

The reaction of 4-acetyl anisole (also known as p-methoxyacetophenone) with hydroiodic acid (HI) results in the cleavage of the O-methyl group of the anisole ring, leading to the formation of iodobenzene and acetophenone. The balanced equation for this reaction is C9H10O2 + HI → C6H5I + C8H8O.

So, the product of the reaction of 4-acetyl anisole with HI is a mixture of iodobenzene and acetophenone. The specific ratio of these products will depend on the reaction conditions, such as the temperature and concentration of the reactants.

It's worth noting that the reaction between 4-acetyl anisole and HI is an example of a nucleophilic aromatic substitution reaction, which involves the replacement of a leaving group (in this case, the O-methyl group) on an aromatic ring by a nucleophile (the iodide ion from HI).

Answer:

9.95 pH

Explanation:

To determine the pH of a sodium fluoride solution, we need to calculate the concentration of the fluoride ion, F⁻, using the dissociation constant expression for sodium fluoride:

Kb = [HF][OH⁻] / [F⁻]

where Kb is the base dissociation constant of sodium fluoride, [HF] is the concentration of hydrogen fluoride, [OH⁻] is the concentration of hydroxide ions, and [F⁻] is the concentration of fluoride ions.

Sodium fluoride is a salt of a weak acid (hydrogen fluoride, HF) and a strong base (sodium hydroxide, NaOH), and so it undergoes hydrolysis in water to produce hydroxide ions and the weak acid HF:

NaF + H₂O → NaOH + HF

The Kb expression for sodium fluoride then becomes:

Kb = [HF][OH⁻] / [NaF]

Since the solution is 0.43 M in sodium fluoride, the concentration of fluoride ions is also 0.43 M. Assuming complete hydrolysis, the concentration of hydroxide ions can be calculated from the Kb expression:

Kb = [HF][OH⁻] / [F⁻]

1.8 x 10⁻¹¹ = x² / 0.43

x = 1.12 x 10⁻⁶ M

The pH of the solution can then be calculated from the concentration of hydroxide ions:

pH = 14 - pOH = 14 - (-log[OH⁻]) = 14 - (-log(1.12 x 10⁻⁶)) = 9.95

Therefore, the pH of the sodium fluoride solution is approximately 9.95.

The summary of this paragraph is that getting enough clean water every day is important for the health and and drinking water is necessary for all humans not only for insstrial purposes.

Accessing to safe and clean drinking water is a basic human right and a fundamental requirement for human survival and well-being. Clean drinking water is crucial for maintaining good health and preventing waterborne diseases that can lead to illness, disability, and even death.

Unfortunately, many people around the world still lack access to safe and clean drinking water, and this can have severe consequences on their health and livelihoods. Inadequate access to clean water is a leading cause of preventable deaths, particularly in developing countries.

Learn more about  summary at:

https://brainly.com/question/25605883

#SPJ1

the supraspinatus muscle is the most commonly injured muscle in this situation because it is responsible for initiating shoulder abduction, which is an important movement in the throwing motion.

The solution are as follows :-

1.Sarah's mother most likely strained her trapezius muscle. The trapezius muscle is a large triangular-shaped muscle that runs along the upper back and neck and is responsible for moving the shoulder blades and supporting the arms. When picking up a heavy object such as a baby, the trapezius muscle is activated, and if the muscle is strained or overused, it can cause sharp pain between the shoulder blades. The fact that Sarah's mother experiences this pain only when picking up her baby suggests that the weight of the baby is causing the strain.

2.The most likely type of injury to the baseball pitcher is a rotator cuff injury. The rotator cuff is a group of muscles and tendons that surround the shoulder joint and are responsible for stabilizing and moving the shoulder. Pitchers are at high risk for rotator cuff injuries due to the repetitive and forceful motion of throwing a baseball. The specific muscles that are most likely involved in a rotator cuff injury are the supraspinatus, infraspinatus, teres minor, and subscapularis muscles. However, the supraspinatus muscle is the most commonly injured muscle in this situation because it is responsible for initiating shoulder abduction, which is an important movement in the throwing motion.

To know more about weight visit :-

https://brainly.com/question/86444

#SPJ1

Answer:

Explanation:

The kinetic energy of an object is directly proportional to its mass and velocity. Therefore, to increase the kinetic energy of the marble, we need to increase either its mass or its velocity, or both. In this case, the student wants to increase the kinetic energy of the marble by increasing its mass.

To determine the optimal mass and size of the third marble, we need to consider the properties of the track and the gravitational potential energy of the marble. The gravitational potential energy of an object is directly proportional to its mass and the height it is raised above the ground. As the marble rolls down the track, it loses potential energy and gains kinetic energy, so the optimal mass of the marble will depend on the height of the track and the desired final speed of the marble.

If the track has a steep incline and the desired final speed of the marble is high, then a marble with a larger mass will have a greater kinetic energy than a marble with a smaller mass. However, if the track has a gentler slope or the desired final speed of the marble is relatively low, then a marble with a smaller mass may be sufficient to achieve the desired kinetic energy.

In terms of size, the third marble should be similar in size to the ceramic and steel marbles in order to fit properly on the track and roll smoothly. The size of the marble will not have a significant impact on its kinetic energy as long as its mass is increased sufficiently.

Therefore, to increase the kinetic energy of the marble, the third marble should be larger and heavier than both the ceramic and steel marbles, but of a similar size to fit properly on the track. The optimal mass and size will depend on the height and slope of the track and the desired final speed of the marble.

Based on the number of electron pairs in a molecule's valence shell, the VSEPR theory may be used to predict a molecule's form. The total number of atoms bound to the centre atom and the total number of lone pairs on the central atom make up the VSEPR number.

The structures of many compounds and polyatomic ions with a central metal atom may also be predicted by the VSEPR model, as can the structures of practically every molecule or polyatomic ion with a central nonmetal atom.

Two electron groups result in an initial digit of 2.

Three electron groups result in an initial digit of 3.

Four electron groups result in an initial digit of 4.

Five electron groups result in an initial digit of 5.

Six electron groups result in an initial digit of 6.

To know more about valence shell visit:-

https://brainly.com/question/2725863

#SPJ1

Perimeter is the total length of the boundary of a closed figure. The perimeter of a simple ... We know that the opposite sides of a rectangle are equal.

[tex] \: [/tex]

Answer:

To calculate the molarity of the solution, we first need to find the number of moles of calcium chloride in the solution.

The molar mass of calcium chloride (CaCl2) is 40.08 g/mol (1 calcium atom + 2 chlorine atoms).

The number of moles of calcium chloride can be calculated as:

moles of CaCl2 = mass of CaCl2 / molar mass of CaCl2

moles of CaCl2 = 40.1 g / 40.08 g/mol

moles of CaCl2 = 1.00 mol

Now that we know the number of moles of calcium chloride in the solution, we can calculate the molarity using the following formula:

molarity = moles of solute / volume of solution (in liters)

First, we need to convert the volume of solution from milliliters to liters:

429 mL = 0.429 L

Now we can calculate the molarity:

molarity = 1.00 mol / 0.429 L

molarity = 2.33 M

Therefore, the molarity of the solution is 2.33 M.

1.) 4.11 grams of CaC2 will produce 1.67 grams of C2H2 ; 2.) 17.01 grams of Ca(OH)2 will produce 14.74 grams of CaC2.

Process that leads to the chemical transformation of one set of chemical substances to another is called chemical reaction.

Balanced chemical equation for the reaction is:

CaC2 + 2H2O → C2H2 + Ca(OH)2

Molar mass of CaC2 is:

Ca = 40.08 g/mol

C = 12.01 g/mol

2 x H = 2 x 1.01

Total = 64.1 g/mol

So 4.11 g of CaC2 is equal to: n = m/M = 4.11 g / 64.1 g/mol = 0.064 mol

Molar mass of C2H2 is:

2 x C =2 x 12.01

2 x H =2 x 1.01

Total = 26.04 g/mol

So mass of C2H2 produced is:

m = n x M = 0.064 mol x 26.04 g/mol = 1.67 g

Therefore, 4.11 grams of CaC2 will produce 1.67 grams of C2H2.

Molar mass of Ca(OH)2 is:

Ca = 40.08 g/mol

2 x O=2 x 16.00

2 x H=2 x 1.01

Total = 74.10 g/mol

So 17.01 g of Ca(OH)2 is equal to: n = m/M = 17.01 g / 74.10 g/mol = 0.2297 mol

Molar mass of CaC2 is:

Ca = 40.08 g/mol

2 x C=2x12.01

Total = 64.1 g/mol

So the mass of CaC2 produced is:

m = n x M = 0.2297 mol x 64.1 g/mol = 14.74 g

Therefore, 17.01 grams of Ca(OH)2 will produce 14.74 grams of CaC2.

To know more about chemical reaction, refer

https://brainly.com/question/25769000

#SPJ1

mass of methanal = -350.0 g

This result is still negative, which means that the given information cannot be correct.

We are given a 0.75 molal solution of methanal (also known as formaldehyde) dissolved in water, and we are told that the total mass of the solution is 650.0 g. We need to calculate the mass of methanal in this solution.

Assuming this information, we can proceed with the calculation as follows:

The molar mass of methanal (HCHO) is 30.03 g/mol. A 0.75 molal solution of methanal means that 0.75 moles of methanal are dissolved in 1 kg of water.

First, we need to calculate the mass of water in the solution. We can use the molality formula to do this:

molality = moles of solute / mass of solvent (in kg)

0.75 molal solution means 0.75 moles of methanal are dissolved in 1 kg of water.

Therefore, the amount of water in the solution is:

moles of methanal = 0.75 mol

mass of water = moles of methanal / molality = 0.75 mol / 0.75 mol/kg = 1 kg

Since the total mass of the solution is 650.0 g, the mass of methanal can be found by subtracting the mass of water from the total mass:

mass of methanal = total mass of solution - mass of water

mass of methanal = 650.0 g - 1000 g

mass of methanal = -350.0 g

This result is still negative, which means that the given information cannot be correct.

The compounds arranged in order of increasing percentage of oxygen by mass are C2H4O2, NO2, CO2, H2O, and O2. Hence, the correct option is C2H4O2, NO2, CO2, H2O, and O2.

The percentage of oxygen by mass in each compound can be calculated using their molecular weight and the weight of the oxygen atoms present in the molecule.

C2H4O2: Molecular weight = 60.05 g/mol, 4 oxygen atoms present, so %O = (4 x 16.00 g/mol) / 60.05 g/mol x 100% = 42.63%

NO2: Molecular weight = 46.01 g/mol, 2 oxygen atoms present, so %O = (2 x 16.00 g/mol) / 46.01 g/mol x 100% = 69.57%

CO2: Molecular weight = 44.01 g/mol, 2 oxygen atoms present, so %O = (2 x 16.00 g/mol) / 44.01 g/mol x 100% = 72.73%

O2: Molecular weight = 32.00 g/mol, 2 oxygen atoms present, so %O = (2 x 16.00 g/mol) / 32.00 g/mol x 100% = 100.00%

H2O: Molecular weight = 18.02 g/mol, 1 oxygen atom present, so %O = (1 x 16.00 g/mol) / 18.02 g/mol x 100% = 88.86%

Therefore, the compounds arranged in order of increasing percentage of oxygen by mass are C2H4O2, NO2, CO2, H2O, and O2. Hence, the correct option is C2H4O2, NO2, CO2, H2O, and O2.

learn more about mass here

https://brainly.com/question/19385703

#SPJ1

a) Al(s) + SnSO4(aq) → six electrons transferred

b) Mg(s) + Fe(NO3)2(aq) → Two electrons transferred

The activity series is a list of metals and nonmetals in order of their relative reactivity. It is a useful tool for predicting the outcome of single displacement reactions and for understanding the behavior of metals and nonmetals in various chemical reactions.

In the activity series, the most reactive metals are listed at the top, while the least reactive metals are listed at the bottom. This means that the metals at the top of the activity series are more likely to lose electrons and undergo oxidation, while the metals at the bottom are less likely to lose electrons and undergo oxidation. Similarly, nonmetals are listed in order of their relative ability to gain electrons and undergo reduction.

Learn more about activity series:https://brainly.com/question/14129976

#SPJ1