What causes a tea kettle that has been warmed on the stove to spew out water vapor

The mass of oxygen is 76.32 g

Stoichiometry is the study of the quantitative relationships between reactants and products in a chemical reaction. It refers to the mole ratios of the reactants and products involved in a reaction.

We know that;

Number of moles of  maleic acid anhydride = 52.1 grams /98 g/mol

= 0.53 moles

If 9 moles of oxygen produces 2 moles of  maleic acid anhydride

x moles of oxygen will produce 0.53 moles  of  maleic acid anhydride

x = 2.385 moles

Mass of oxygen =  2.385 moles * 32 g/mol

= 76.32 g

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Answer:

steel

Explanation:

Answer:

B. STEEL

Explanation:

The  [H3O+] in step 1 is 0.0034 M while the  [H3O+] in step 2 is 0.00039 M

Let us set up the ICE table in each case, for K1;

         H2A(aq) + H2O(l)-------->   H3O^+(aq) + HA^-(aq)

I        0.12                                     0                    0

C       -x                                        +x                   +x

E      0.12 - x                                x                     x

Ka1= [H3O^+] [HA^-]/[ H2A]

Ka1= x^2/  0.12 - x  

1.0×10^−4 = x^2/  0.12 - x  

1.0×10^−4(0.12 - x ) = x^2

1.2 * 10^-5 - 1.0×10^−4x =  x^2

x^2 +  1.0×10^−4x - 1.2 * 10^-5  = 0

x =0.0034 M

[H3O+] = 0.0034 M

Again;  [H3O+] = [HA^-] = 0.0034 M

          HA^-(aq) + H20(l)    -------> A^-(aq)   + H3O^+

I       0.0034                                  0               0

C       -x                                          + x            +x

E    0.0034 - x                               x                x

Ka2= [A^-] [H3O^+]/[HA^-]

5.0×10^−5 = x^2/ 0.0034 - x  

5.0×10^−5 (0.0034 - x ) = x^2

1.7 * 10^-7 - 5.0×10^−5x =  x^2

x^2 + 5.0×10^−5x - 1.7 * 10^-7 = 0

x=0.00039 M

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a) The sphere emits thermal radiation at a rate of 139.75 Watts.

b) The sphere absorbs thermal radiation at a rate of 37.66 Watts.

c) The sphere's net rate of energy exchange is 102.09 Watts.

To calculate the rates of thermal radiation emission and absorption, we can use the Stefan-Boltzmann law, which states that the rate of thermal radiation emitted or absorbed by an object is proportional to its surface area, temperature, and the Stefan-Boltzmann constant.

a) The rate of thermal radiation emitted by the sphere can be calculated using the formula:

Emitting Rate = emissivity * surface area * Stefan-Boltzmann constant * (\(temperature^4 - environment\ temperature^4\))

Plugging in the given values:

Emitting Rate = \(0.924 * (4\pi * (0.457)^2) * 5.67 \times 10^{-8} * ((32.2 + 273.15)^4 - (82.9 + 273.15)^4)\)

Emitting Rate ≈ 139.75 Watts

b) The rate of thermal radiation absorbed by the sphere can be calculated in a similar way but using the environment temperature as the object's temperature:

Absorbing Rate = emissivity * surface area * Stefan-Boltzmann constant * (\(environment\ temperature^4 - temperature^4\))

Plugging in the given values:

Absorbing Rate = \(0.924 * (4\pi * (0.457)^2) * 5.67 \times 10^{-8} * ((82.9 + 273.15)^4 - (32.2 + 273.15)^4)\)

Absorbing Rate ≈ 37.66 Watts

c) The net rate of energy exchange is the difference between the emitting rate and the absorbing rate:

Net Rate = Emitting Rate - Absorbing Rate

Net Rate = 139.75 Watts - 37.66 Watts

Net Rate ≈ 102.09 Watts

Therefore, the sphere emits thermal radiation at a rate of 139.75 Watts, absorbs thermal radiation at a rate of 37.66 Watts, and has a net rate of energy exchange of 102.09 Watts.

Note: The units for all the rates are Watts.

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The number of moles in container 2 is 33.3moles when the container has 27.32L of gas inside it

The number of moles of gas in container 2 can be calculated using the Ideal Gas Law:  

n = PV/RT  

where n is the number of moles of the gas with known volume,

P is the pressure (assumed to be 1 atm for ideal gases),

V is the volume (27.32 liters),

R is the ideal gas constant (0.0821 L·atm/mol·K) and

T is the temperature (assumed to be 273.15 K).  

Plugging in the values, we get:  

n = (1 atm)(27.32 L)/(0.0821 L·atm/mol·K)(273.15 K)

n = 33.3 mol  

Therefore, there are 33.3 moles of gas in container 2.

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The difference between any two stationary state energy is the right response.

In atoms, the orbits of electrons are quantized. Electrons can travel to a higher orbit by absorbing some energy and can move to a lower orbit by releasing energy. Each orbit has distinct energy. Discrete spectra result from the quantization of the orbits, which also quantizes the energy received or emitted. One of the most common ways to introduce and remove energy from atoms is by photon absorption or emission, and the energy involved is equivalent to the change in electron energy as it moves from one orbit to another.

What is atomic quantization?

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ANSWER

An atom of element is electrically neutral because the number of positive protons are equal to number of negative electrons.

Answer:

Although thomson model of atom explained that atoms are electrically neutral, the results of this experiment carried by other scientists couldnot be explained by this model

The order of the arrangement of the strengths of the acids is;

Sulfurous acid < Sulfuric Acid < Fluorosulfuric acid. Option C

The term acid strength has to do with the ease with which the acid is ionized in water. If the acid is well ionized in water then the acid will have a great acid strength.

In this case, we must be able to consider the factors that could make an acid to ionize more freely such as the presence of highly electronegative elements that account for the weakening of the bond to the acidic hydrogen atom and the subsequent ionization.

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Answer:

The answer is An eathquake

Explanation:

I got it from the internet

5.58 × 10²⁴ molecules O₂

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

9.27 mol O₂ (Oxygen)

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

Step 4: Check

Follow sig fig rules. We are given 3 sig figs.

5.58239 × 10²⁴ molecules O₂ ≈ 5.58 × 10²⁴ molecules O₂

The alkene that would yield 2,2-dimethoxycyclopentane-1,3-dicarbaldehyde on treatment with O3 followed by (CH3)2S is 2-methyl-2-pentene.

The reaction scheme is as follows:

2-methyl-2-pentene → O3 → (CH3)2S → 2,2-dimethoxycyclopentane-1,3-dicarbaldehyde.

2-Methyl-2-pentene is an organic compound that belongs to the category of alkenes. It is a saturated hydrocarbon, meaning it contains only single bonds between the carbon atoms. The chemical formula for 2-methyl-2-pentene is C5H10 and it is composed of two carbon-carbon double bonds. It has a boiling point of 63.2 °C, a melting point of -81.2 °C, and a density of 0.719 g/cm3. It is a colorless liquid at room temperature and has a sweet, gasoline-like odor. It is insoluble in water, but it can be dissolved in organic solvents such as ethanol and ether. 2-Methyl-2-pentene is commonly used as a starting material for the synthesis of other organic compounds, such as aldehydes, ketones, and alcohols.

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There are 1000 millimeters in a meter. To convert 161 millimeters to meters, we need to divide by 1000:

161 millimeters ÷ 1000 = 0.161 meters

Therefore, 161 millimeters is equal to 0.161 meters.

Answer:

Ernest Rutherford's atomic models the basis of our understanding of atoms. The model describes the atom as a tiny and dense with a positively charged core called a nucleus with neutral subatomic particles called neutrons. The model includes negative-charged subatomic particles called electrons that orbit the nucleus.

Ernest Rutherford and his fellow scientist created an experiment in which they bombarded very thin sheets of gold foil with fast moving alpha particles. Alpha particles are a type of radioactive particles that are positively charged. During their time, the current atomic model showed that an atom’s mass and charge are uniformly distributed throughout the atom. Using that model, they expected that the alpha particles would pass through the gold foil with slight deflection or even none at all. While the experiment did show that they were undeflected, they were surprised to see that a small amount bounced of the the foil a large angles.

This experiment led Rutherford to conclude that the particles that were highly deflected must have experienced powerful enough force within the atom to be deflected. He concluded that all of the positive charges and the majority of the mass of the atom must be condensed in a very small space in the atom’s interior, which he called the nucleus.  In the nuclear model, the proton and  neutrons are in the nucleus, the center of the atom. Electrons a distributed throughout the atom, orbiting the nucleus.

I hope you understand! :)

Ernest Rutherford's  model describes the atom as a tiny and dense with a positively charged core called a nucleus with neutral subatomic particles called neutrons. The model includes negative-charged subatomic particles called electrons that orbit the nucleus.

Ernest Rutherford and his fellow scientist created an experiment in which they bombarded very thin sheets of gold foil with fast moving alpha particles. Alpha particles are a type of radioactive particles that are positively charged. During their time, the current atomic model showed that an atom’s mass and charge are uniformly distributed throughout the atom. Using that model, they expected that the alpha particles would pass through the gold foil with slight deflection or even none at all. While the experiment did show that they were undeflected, they were surprised to see that a small amount bounced of the the foil a large angles.

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The skydiver is falling at a velocity of 212 kilometres per hour. The speed of the skydiver is 212 miles per hour.

If a skydiver leaps out of a plane and lands at 212 mph, it is necessary to know the skydiver's velocity and speed. Velocity is speed with a direction, whereas speed just exists as a number with a speed unit at the end. While velocity refers to both the speed and direction of an object's motion, speed is the rate at which an object moves along a path over time. The skydiver is falling at a speed of 212 kilometres per hour. 212 kilometres per hour is the speed at which the skydiver is travelling. Speed is the rate at which an object travels along a path over time, as opposed to velocity, which describes the speed and direction of an object's motion. A scalar quantity is speed.

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Answer:

C

Explanation:

Edge 2022 trust the process

Knowing about the greenhouse effect we have that what intensifies this effect is an increase in gases in the atmosphere that absorb heat.

Greenhouse effect is a natural atmospheric phenomenon responsible for the maintenance of life on Earth. Without the presence of this phenomenon, the temperature on Earth would be very low, around -18ºC, which would make the development of living beings impossible.

Thus, the main cause of the greenhouse effect is industrialization. Due to this process, the burning of fossil fuels has intensified in recent centuries. The main products of the combustion reaction of these reagents are the gases mentioned above as the main ones for the greenhouse effect.

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Answer:

1.) protons or electrons 2.) ion

Explanation:

To solve such this we must know the concept of redox chemical reaction and their balancing in acidic, neutral and basic medium. The blanks should be filled with half reactions, atom and charge and electrons.

Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.

When balancing a redox reaction, begin by separating the reaction into half reactions (reactants and products, half reactions, or elements). Balance each of these in terms of atom and charge (stoichiometry, number of moles, or atoms and charge). Multiply by some factor if necessary so that the number of electrons (elements, electrons, or moles) appearing in both is the same. Add these together, canceling out any terms that appear on both sides of the final equation.

Therefore, the blanks should be filled with half reactions, atom and charge and electrons.

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Check the nails every day for the development of rust. Both the nails submerged in water should rust after three weeks, while the nail submerged in vinegar should rust after about one week.

Rust is a similar coating created on a metal other than iron by corrosion. It is a reddish brittle coating that forms on iron especially when chemically attacked by damp air and is constituted primarily of hydrated ferric oxide.

Rust is a result of the reaction of iron with both air and water. Rust is a powder that forms from the oxygen in the air. Rusting is the process of rust creation. Rust is a reddish-orange flaky material. The metal surface is where rusting is more prone to happen because it is an oxidation process.

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Answer:

A. internal arrangement of atoms

Explanation:

An atom can be defined as the smallest unit comprising of matter that forms all chemical elements. Thus, atoms are basically the building blocks of matters and as such defines the structure of a chemical element.

Generally, these atoms are typically made up of three distinct particles and these are protons, neutrons and electrons.

Hence, all the physical properties of a mineral result from the mineral's internal arrangement of atoms.

The physical properties of the mineral result from the mineral should be A. internal arrangement of atoms

It refers to the smallest unit that contains the matter where the chemical elements should be formed. Also, it is the basic building blocks of matters that represent the structure of the chemical elements. Also, it should be made up of three different particles i.e. protons, neutrons, and electrons.

Hence, The physical properties of the mineral result from the mineral should be A. internal arrangement of atoms

Therefore, the first option is correct.

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Free energy declines as a system's stability rises during a spontaneous transition.

The greatest amount of work performed in a thermodynamic system at constant temperature and pressure is measured using the Gibbs free energy.

Free energy is released during spontaneous reactions, hence the sign of G must be negative. Gibbs free energy varies as a result of exergonic and endergonic reactions. In an exergonic reaction, the products' free energy is lower than the reactants', whereas in an endergonic reaction, the products' free energy is higher than the reactants'.

The reactants of an exergonic reaction have a higher free energy level than the products (reaction goes energetically downhill).

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Below is a diagram of the product's structure. The product is amide.

Aniline's N atom functions as a nucleophile, whereas propanoic acid's carbonyl group functions as an electrophilic center. A nucleophilic acyl substitution process takes place when aniline and propanoic acid are combined and heated. An amide is created during this reaction. At the carbonyl center, the reaction mechanism follows the addition-elimination pathway. The complete response mechanism is displayed here. An acyl group (R-C=O) joined to a nitrogen atom forms the functional group of an amide, which is typically an organic compound: The simplest amides are ammonia (NH3) derivatives with an acyl group in place of one hydrogen atom.

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Explanation:

1. Describe the earth's early atmosphere and how oxygen was developed in the atmosphere.

When Earth formed 4.6 billion years ago from a hot mix of gases and solids, it had almost no atmosphere. The surface was molten. As Earth cooled, an atmosphere formed mainly from gases spewed from volcanoes. It included hydrogen sulfide, methane, and ten to 200 times as much carbon dioxide as today's atmosphere.

2. Explain the theory of the development of the earth's atmosphere and how oceans were formed.

Many scientists believe that water was present when the Earth was formed. Then the process of outgassing water molecules into the atmosphere, which then rained onto the surface of the Earth as the atmosphere cooled, created the ocean

3. Explain why the compositions of the earth's atmosphere has not changed much for 200 million years.

The atmosphere has stabilized over time as ecosystems have saturated with life.

The atmosphere has stabilized over time as ecosystems have saturated with life.The oceans have stabilized since then as well, as the oceans and atmosphere have strong interactions.

The atmosphere has stabilized over time as ecosystems have saturated with life.The oceans have stabilized since then as well, as the oceans and atmosphere have strong interactions.Life is the source of free oxygen. For the atmosphere to change from where it is now there must be a significant change in the amount of photosynthetic organisms, which changes depend mostly on temperature.

The atmosphere has stabilized over time as ecosystems have saturated with life.The oceans have stabilized since then as well, as the oceans and atmosphere have strong interactions.Life is the source of free oxygen. For the atmosphere to change from where it is now there must be a significant change in the amount of photosynthetic organisms, which changes depend mostly on temperature.If there is a major change in temperature such as a new ice age then you might see a significant change in the Earth’s atmosphere

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1. The enthalpy of reactant is 80 KJ

2. The enthalpy of product is 160 KJ

3. The activaition energy for the reaction is 160 KJ

4. The heat of reaction is 80 KJ

5. The forward reaction is endothermic

6. The addition of catalyst will lower the activation energy

7. The enthalpy of reactant is less than the enthalpy of product

8. False

9. False

10. False

The enthalpy of reactants defines the energy of the reactants while the enthalpy of products defines the energy of product.

From the diagram given, we obtained the following

The activation energy for the reaction can be obtain as follow:

Activation energy = Peak energy - Energy of reactant

Activation energy = 240 - 80

Activation energy = 160 KJ

The heat of reaction can be obtain as follow:

Heat of reaction = Enthalpy of products - Enthalpy of reactants

Heat of reaction = 160 - 80

Heat of reaction = 80 KJ

The heat of reaction obtained above is positive (i.e 80 KJ).

Thus, we can conclude that the forward reaction is endothermic reaction.

A catalyst is a substance which alters the rate of a reaction. Catalyst tends to lower the activation energy of a reaction, thereby enhacing the reaction rate.

However, we must take note of the following:

From the diagram above, we obtain:

We can see that the enthalpy of the reactant is less than that of the products.

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The single peak in the NMR spectrum at 0.9 ppm is characteristic of a saturated hydrocarbon with eight carbon atoms and 18 hydrogen atoms, or octane.

The NMR spectrum of a compound is a powerful tool for identifying the chemical structure of the compound.

In this case, the NMR spectrum consists of only a single peak with a chemical shift of 0.9 ppm, which indicates that all of the hydrogen atoms in the molecule are in an identical electronic environment.

The molecular formula given is \(C_{8}H_{18}\), which corresponds to a saturated hydrocarbon with eight carbon atoms and 18 hydrogen atoms, also known as octane.

The fact that there is only one NMR peak indicates that all of the hydrogen atoms in octane are equivalent, meaning that they are in the same chemical environment and experience the same magnetic field.

Therefore, the single peak in the NMR spectrum at 0.9 ppm is characteristic of a saturated hydrocarbon with eight carbon atoms and 18 hydrogen atoms, or octane.

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The time taken by an immersion heater to heat the water from 27.5°C to 85.5°C is 6.4 minutes.

To calculate the time taken by an immersion heater, use the formula:

P = Q / t

where P is the power of the immersion heater, Q is the heat energy, and t is the time taken to heat the water.

The values given are:

Substituting these values into the formula:

Q = mcΔT

Q = 0.361 kg × 4.184 J/g°C × 58°C

= 87.7 kJ = 87,700 J

Substituting the values of P and Q into the formula:

P = Q / t

we get:

t = Q / P = 87,700 J / 228 W = 384.2 s = 6.4 minutes

Therefore, it took about 6.4 minutes for the immersion heater to heat the water from 27.5°C to 85.5°C.

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Answer:

Calcium has 20 protons 26 neutrons and 20 electrons.

argon has 18 protons

22 neutrons and 18 electrons

Bromine has 35 protons 44 neutrons and 35 electonrs

Explanation:

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As per the details given, 4.0 moles of water would have a mass of approximately 72.06 grams.

We must take the molar mass of water into account in order to calculate the mass of 4.0 moles of \(H_2O\) (water).

The atomic masses of two hydrogen atoms (1.008 g/mol each) and one oxygen atom (16.00 g/mol) are added to provide the molar mass of water, which is around 18.015 gram per mole (g/mol).

Using the equation:

Mass = Moles × Molar Mass

We can calculate the mass of 4.0 moles of water:

Mass = 4.0 moles × 18.015 g/mol

Mass = 72.06 grams

Therefore, 4.0 moles of water would have a mass of approximately 72.06 grams.

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Answer:

see your answer in pic

Explanation:

There can be emissions of radiations like gamma radiation. There can be emission of particles too like alpha particle. Therefore, the nuclear equation for the beta decay of Promethium-165 is

¹⁶⁵Pm\(\rightarrow\)⁰e₋₁  +  ₆₂Sm¹⁶⁵

Nuclear decay is process in which the radioactive element releases particles or radiations. Alpha particles is ⁴₂He. Alpha particle is nothing but helium particle. The kinetics that is related to nuclear decay is of first order.

The nuclear equation for the beta decay of Promethium-165 is

¹⁶⁵Pm\(\rightarrow\)⁰e₋₁  +  ₆₂Sm¹⁶⁵

Beta decay of  Promethium-165 is the emission of electron particle from the given isotope. the product is Samarium  ₆₂Sm¹⁶⁵.

Therefore, the nuclear equation for the beta decay of Promethium-165 is

¹⁶⁵Pm\(\rightarrow\)⁰e₋₁  +  ₆₂Sm¹⁶⁵

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Answer:

magnet is one

Explanation:

metals attach to magnets

Answer:

Explanation:

Check if they are ductile and malleable

If they are conductive

Metals produce hydrogen gas on reacting with acid

If they are sonorous

Or if you don’t have physical identity of them you can rather check it out in the periodic table.

Answer:

a compound with one carbon atom and four hydrogen atoms (CH4).

Explanation:

Natural gas is a fossil energy source that formed deep beneath the earth's surface. Natural gas contains many different compounds. The largest component of natural gas is methane.