Pb + PbO2 + 2H2SO4 → 2PbSO4 + 2H2O

What is the mole ratio of PbO2 to water

The reaction's overall chemical equation: 2 HBr(g) + O₂(g)  Br₂ + 2H₂O(g) These intermediates are known as species

In this mechanism, species are formed in one step of the reaction and consumed in another. These intermediates are known as species. BrO and HO₂ serve as intermediaries in this mechanism. As a result, the intermediates have the chemical formulas HO₂ and BrO.

Chemical species that are produced during a chemical reaction but are not the reaction's final products are called intermediates.

By providing a route for the reactants to transform into products, intermediates play an important role in numerous chemical reactions. They can also assist in explaining the mechanism of the reaction.

Learn more about catalysts :

brainly.com/question/24430084

#SPJ1

C

An hydrogen atom absorbs energy then the electron moves from lower to higher shell number.

Also if the wavelength is longest then energy difference is minium as wavelength and energy are inversely proportional.

Energy difference is directly proportional to (1/n1^2 - 1/n2^2).

Hence we want this quantity as minium for minimum energy and longest wavelength.

a)(1/1 - 1/4) =0.75

b)(1/16 - 1/36) =0.035

v)(1/36-1/49)=0.00737

D)Not the answer as n=5 to n=4 means energy is released.

e)(1/4-1/9) =0.139

Hence the minimum value is c transition.

Hence the answer is option c.

So an hydrogen atom absorbs energy then the electron moves from lower to higher shell number.

To know more about longest wavelength, click here:

https://brainly.com/question/20564746

#SPJ4

Answer:

1.58 g Pt

Explanation:

one mole of platinum weighs 195.09 grams (195.09 g/mol).

to convert moles of platinum to grams, we simply multiply the given moles of platinum by 195.09 to convert it to grams.

0.00808 x 195.09 = 1.576 g

Answer:

Florida's Global Pattern.

Explanation:

Because of where Florida sits, the weather in the Gulf of Mexico actually blows enough water to Create tidal waves, and also hurricanes. at least that's what I was told cause I live here :>

Answer:

sabatomic particle also called elementary particle of any various self contained units of matter or energy that are fundamental constitution of all methods

Answer:

648.68 mg

Explanation:

The reaction that takes place is:

First we calculate how many moles of each reactant were added, using the given volumes and concentrations:

24 mmol of FeCl₃ would react completely with (24 * 3) 72 mmol of NaOH. There are not as many NaOH mmoles, so NaOH is the limiting reactant.

Now we calculate how many moles of Fe(OH)₃ are formed, using the moles of the limiting reactant:

Finally we convert 6.07 mmol Fe(OH)₃ to grams, using its molar mass:

The 129.6 g mass of Fe(OH)₃ will be obtained.

Weight or mass of any substance can be calculated from mole as:

n = W/M.

Given chemical reaction is:

FeCl₃ + 3NaOH → Fe(OH)₃ + 3NaCl

According to the question:

Concentration of FeCl₃ = 0.240 M

Volume of FeCl₃ = 100 mL

Concentration of NaOH = 0.182 M

Volume of NaOH = 200 mL

Moles can be calculated by using the formula M = n/V mole/L 0r M = n×1000/V g/mL,

Moles of FeCl₃ = 0.240 × 100 = 0.024 mole

Moles of NaOH = 0.182 × 200 = 3.64 mole

From the stoichiometry of the reaction, it is clear that 3 mole of NaOH i.e. 109.2 moles of NaOH reacts with 1 mole of FeCl₃ to form product. So here NaOH is the limiting agent and responsible for the formation of product. Now we calculate how many moles of Fe(OH)₃ are formed, using the moles of the limiting reactant as follow:

Moles of Fe(OH)₃ = 1/3 × ( 3.64) = 1.21 mole

Finally we convert 12.1 mole Fe(OH)₃ to grams, using its molar mass:

W = 1.21 mole × 106.87 g/mole = 129.6 g

Hence, 129.6 gram of Fe(OH)₃ will be obtained.

To know more about moles, visit the below link:

https://brainly.com/question/14464650

Answer:

If you are meaning O2^2- ion, well, don’t forget that ions have a charge, that has to be specified when referring to them. It is a polyatomic ion just because it consists of more than one atom, irrespective of the fact that these atoms are of the same element or not. It was given that name because at the early times chemistry was founded as a science, it was found that with respect to other oxygenated substances, peroxides contained more oxygen than expected: Latin prefix per- gives the terms it is attached to the meaning of being increased, enhanced, and similar.

Explanation:

How much of the original sample will still be there at the end of the second year if the half-life of a radioactive isotope sample is one year? by the third year's end?

when the fourth year comes to an end? Answer The balance at the conclusion of the second year equals 1 4 times the initial amount. The balance at the conclusion of the third year is equal to 1/8 of the initial amount. Radioactive isotopes that are unstable usually undergo radioactive decay in order to become stable. The nucleus of the isotope undergoes a spontaneous nuclear transition during this event, and particles and energy are released. The decay process causes half of the isotope's initial mass to disintegrate at a specific point in time known as the half-life.

To learn more about radioactive please click on below link

https://brainly.com/question/1770619

#SPJ4

Answer:

Diseases of Poultry
a. ESCHERICHIA COLI INFECTIONS.
b. SALMONELLOSES.
c. PARATYPHOID INFECTIONS.
d. FOWL CHOLERA.
e. RIEMERELLA ANATIPESTIFER INFECTIONS.MYCOPLASMA.
f. NECROTIC ENTERITIS.
g. CHOLANGIOHEPATITIS IN BROILER CHICKENS.

Explanation:

Answer:

◎Bacterial diseases

◎Mycoplasmosis (CRD, Air sac, Sinusitis)

◎Fowl Cholera

◎Necrotic Enteritis

◎Ulcerative Enteritis (Quail disease)

◎Pullorum Disease

◎Fowl

◎Botulism

◎Infectious Coryza

◎Omphalitis

◎Erysipelas

◎Parasitic diseases (internal)

◎Parasitic diseases (external)

◎Infectious Bronchitis

◎Viral diseases

◎Newcastle Disease

◎Quail Bronchitis

◎Lymphoid Leukosis

◎Marek's Disease (Visceral Leukosis)

◎Infectious Bursal Disease (Gumboro)

Explanation:

:)

Answer:

Lightweight and wrinkle-free, sharkskin is ideal for curtains, tablecloths and napkins. Sharkskin fabric is popular for both men's and women's worsted suits, light winter jackets and coats. Sharkskin is commonly used as a liner in diving suits and wetsuits.

Valence electrons move between atoms in shared orbitals-  correctly describes delocalized valence electrons in a metal

Why are valence electrons important and what do they do?

The outermost or valence shell electrons, known as valence electrons, are crucial because they shed light on an element's chemical characteristics and are the ones that are acquired, lost, or shared during a chemical reaction. In general, when an atom's outermost electron shell is complete, it is at its most stable and least reactive.

The number of valence electrons for neutral elements is the same as the number of the atom's main group. A periodic chart element's column can be used to determine its main group number. For instance, carbon, which belongs to group 4, has four external electrons.

To learn more about valence electrons use:

https://brainly.com/question/371590

#SPJ1

The reaction rate to the nearest whole number is 36.1 mg/l/sec.

To calculate the reaction rate we would use the formula already provided which is: mass of tablet/volume of water ÷ Reaction time.

For the tablet with a 3°C Reaction time, we would calculate the rate as follows:

1000 mg * 0.2L/138.5 sec = 36.1 mg/L/sec.

The final result has all three variables and the resulting answer is the reaction rate.

Learn more about reaction rate here:

https://brainly.com/question/12904152

#SPJ1

Complete Question:

Assume that each tablet's mass was 1,000 mg, and remember that you used 0,200 L of water each time,

Compute the reaction rate to the nearest whole number using the formula below,

mass of tablet/volume of water

Reaction Rate = mass reaction time

3°C Reaction time = 138.5 sec

Reaction rate = mg/l/sec

As electron delocalization stabilizes the compound it is necessary that it takes place for compound to exist , hence the given statement is false.

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 compounds,here:

https://brainly.com/question/13516179

#SPJ2

Answer: is ur dad

Explanation:

The birth weight of cats at the 90th percentile would be approximately 3.7 ounces. b. The birth weight of cats at the 10th percentile would be approximately 2.3 ounces.

There are three main methods of calculating weight:

1. Balance Beam Scale: A balance beam scale is an example of a mechanical weighing system. It uses a set of calibrated weights to measure the weight of an object.

2. Digital Scale: A digital scale uses an electronic or digital readout to display the weight of an object.

3. Calipers: Calipers are devices used to measure the distance between two points, such as thickness or diameter. They come in various sizes and shapes, depending on the type of measurement the user wants to take.

Birth weight is the weight of a baby at the time of birth. It is usually measured soon after delivery, with a special baby scale, though sometimes the baby's weight is estimated. The normal range of birth weight is anywhere between 5 lbs 8 oz and 10 lbs, though preterm or premature babies may be significantly lighter. A baby's birth weight is important because it can provide a clue to the baby's overall health. High birth weights may indicate an underlying medical condition, and low birth weights can be a sign of premature or difficult delivery and health risks associated with such a delivery.

To know more about birth weight, visit:

https://brainly.com/question/19262426

#SPJ1

The original substance has undergone a transformation into a new substance with different properties, indicating a change in the chemical composition of the material.

An example of a change in substance is the process of combustion. When a substance, such as wood, is burned, it undergoes a chemical reaction with oxygen in the air, which produces a new substance: carbon dioxide gas, water vapor, and ash. This change in the chemical composition of the wood means that it has transformed into a completely new substance with different physical and chemical properties.

Another example is the process of electrolysis, where an electric current is passed through a solution containing ions. This can cause a chemical reaction to occur, resulting in the breakdown of the original substance into its component parts or the formation of a new substance.

for more questions on transformation
https://brainly.com/question/29713522
#SPJ11

The term that refers to the passing of a wave through an object is "transmission."

Transmission refers to the process by which a wave passes through an object or medium. In the context of sound, transmission occurs when sound waves travel through different substances, such as air, water, or solids.

When a sound wave encounters an object, it can be transmitted through it, reflected off it, or absorbed by it, depending on the properties of the object and the medium through which the sound is traveling.

For example, when you speak into a microphone, the sound waves produced by your voice travel through the air and are transmitted to the microphone's diaphragm. The diaphragm converts the sound waves into electrical signals, which can then be amplified and reproduced as sound through speakers.

In summary, transmission is the term used to describe the passage of a wave, such as a sound wave, through an object or medium. It is an essential concept in understanding how waves interact with their surroundings and how sound propagates through different materials.

for such more questions on  transmission

https://brainly.com/question/18451537

#SPJ8

Answer:

a liquid

Explanation:

Answer: ar

Explanation:

Types of luminous flames:

1. Yellow Luminous Flame

2. Smoky Luminous Flame

3. Orange Luminous Flame

4. Blue Luminous Flame

Luminous flames are characterized by their visible glow, which is caused by the incomplete combustion of fuel. The presence of soot particles in the flame causes the emission of light. There are different types of luminous flames, which can be classified based on their fuel composition and burning conditions. Here are some common types of luminous flames:

1. Yellow Luminous Flame: This is the most common type of luminous flame, often seen in open fires, candles, and gas stoves. It appears yellow due to the presence of soot particles in the flame. Yellow flames indicate incomplete combustion of hydrocarbon fuels, such as methane, propane, or natural gas. The high carbon content in these fuels leads to the formation of soot, which emits visible light.

2. Smoky Luminous Flame: This type of flame is characterized by a significant amount of black smoke and soot production. It is commonly observed in poorly adjusted or malfunctioning burners or engines. The excessive presence of unburned fuel in the flame results in incomplete combustion and the emission of dark smoke particles.

3. Orange Luminous Flame: An orange flame indicates a higher combustion temperature compared to a yellow flame. It is often seen in more efficient burners or when burning fuels with a higher carbon content, such as oil or diesel. The higher temperature helps in burning more of the carbon particles, reducing the amount of soot and making the flame appear less yellow.

4. Blue Luminous Flame: A blue flame is typically associated with complete combustion. It indicates efficient burning of fuel, resulting in minimal soot formation. Blue flames are commonly observed in gas burners or Bunsen burners. The blue color is a result of the combustion of gases, such as methane, in the presence of sufficient oxygen.

It's important to note that the luminosity of a flame can vary depending on factors such as fuel-air mixture, combustion temperature, and the presence of impurities. Achieving complete combustion and minimizing the production of soot is desirable for efficient and cleaner burning processes.

for more questions on luminous

https://brainly.com/question/27163038

#SPJ8

Answer:

all you have to so answer it all done

Answer:

The pressure in the basketball is approximately 0.00045329 atm after experiencing the temperature drop.

Explanation:

Assuming that the volume of the basketball does not change, we can use the ideal gas law to calculate the pressure in the basketball:

PV = nRT

Where P is the pressure, V is the volume, n is the amount of substance (in moles), R is the gas constant, and T is the temperature.

To find the pressure, we will first need to rearrange the formula to solve for P:

P = nRT / V

Plugging in the given values, we have:

P = nRT / V

P = (m * 1.6605393 × 10^(-24) moles) * (0.082057 mol/L-atm) * (273.15 K) / (0.225 L)

P = 0.00045329 atm

So the pressure in the basketball is approximately 0.00045329 atm after experiencing the temperature drop.

Answer:

False

Explanation:

My first response got deleted by brainly so here, again

Answer:

False.

Explanation:

Took the test, got it right. Good luck!

Answer:

0 °C

Explanation:

Answer:

0 C

Explanation:

Answer: 500g

Explanation:

We are asked to find the theoretical yield of a reaction, and we are given the following information:

In order to find the the theoretical yield we must use the following formula:

We have to convert the percents to real numbers before the calculations.  We can do it dividing the percent value into 100, so:

Answer:

In this reaction, Ca(OH)2 is a reducing agent. It reacts with hydrogen chloride to form calcium chloride and water. Therefore, the following reaction shows that matter is neither created nor destroyed in a chemical reaction: Ca(OH)2 + 2HCI -> CaCl2 + 2H20. The formation of calcium chloride and water from the hydrolysis of calcium hydroxide is not an example of matter being created or destroyed in a chemical reaction because it does not involve the breaking down of any bonds between atoms.

Explanation:

Only Ag2CO3 will precipitate from the solution.

When Na2CO3 is added to the solution, it will react with the Ag^+ and Pb^2+ ions to form precipitates of Ag2CO3 and PbCO3. The Mn^2+ ion concentration is not high enough to form a precipitate with Na2CO3.

First, let's calculate the initial concentration of Ag^+ and Pb^2+ ions in the solution:

Ag^+: 0.00050 M

Pb^2+: 0.00050 M

Next, we need to calculate the concentration of Na2CO3 after it is added to the solution. Since we added 10.00 ml of 1.0*10^-6 M Na2CO3 to a total volume of 500 ml, the final concentration of Na2CO3 is:

[Na2CO3] = (10.00 ml / 500 ml) * 1.010^-6 M

[Na2CO3] = 2.010^-8 M

Now we can use the Ksp values to determine which precipitates will form.

For Ag2CO3:

Ksp = [Ag^+]^2[CO3^2-]

8.110^-12 = (2x)^2 (2x)

8.110^-12 = 4x^3

x = 2.0*10^-4 M

Since the concentration of CO3^2- is higher than the solubility product, Ag2CO3 will precipitate.

For PbCO3:

Ksp = [Pb^2+][CO3^2-]

7.410^-14 = (0.00050 M)(2x)

x = 9.210^-11 M

Since the concentration of CO3^2- is lower than the solubility product, PbCO3 will not precipitate.

Therefore, the only precipitate that will form is Ag2CO3.

More on precipitation reactions can be found here: https://brainly.com/question/24158764

#SPJ1

Answer:

The specific heat of the metal is 0.69 J/g°C.

Explanation:

The given information from the exercise is:

• Metal,:

- Mass (massmetal): 52.3g

- Initial temperature (Tinitialmetal): 126.2°C

- Final temperature (Tfinalmetal): 35.5°C

• Water,:

- Mass (masswater):71.2g

- Initial temperature (Tinitialwater): 24.5°C

- Final temperature (Tfinalwater): 35.5°C

1st) It is necesary to write the Heat formula for both materials, the metal and water. In the case of water, we can solve the formula, because we have all the nedeed information:

• Metal,:

Water:

So, the heat absorbed by the water is 3,276.9 J.

2nd) In the end both materials reach the equilibrium temperature, because the heat released by the piece of metal is absorbed by the water, this is represented as:

Finally, we have to replace the heat of the metal equation (Qm) and the heat of water (Qw) to calculate the specific heat of the metal:

So, the specific heat of the metal is 0.69 J/g°C.