Bradley is planning to publish a cookbook. It will include 150 recipes, with one recipe on each page. They also decide to divide the book into three sections: vegetarian dishes, meat dishes, and desserts

Answer:

c

Explanation:

major changes in the environment

Major changes in the environment are the ultimate cause of most mass extinctions. Therefore, option (C) is correct.

The extinction of a large number of animals altogether is called a mass extinction. The fossil records indicate that something uncommon happened millions of years ago. A wide range of animals died suddenly which can be referred to as a mass extinction.

As the new species begin evolving, the old species got reduced from the earth. More than 90% of the creatures have become extinct in the last 500 million years. Mass extinctions are deadly events that took place 250 million years ago. During the “Great Dying”, 96 percent of the marine species were depleted.

Changes in the salt and oxygen concentration in the oceans can be the reason for extinction. The meteorite attacks on the earth, volcanic activities, and anoxic conditions, and all led to the extinction of a large mass of animals.

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The medium-sized eastern fence lizard (Sceloporus undulatus) is a species of lizard belonging to the Phrynosomatidae family. The species can be found in the eastern United States on rotting logs or stumps.

The name fence lizard, fence fast, grey lizard, gravid lizard, northern fence lizard, or pine lizard are other names for it. The horn-billed lizard is another common name for it. Its tendency to flee from fire ants when it comes across them is one of its most famous characteristics.

A varied family of lizards known as the Phrynosomatidae, sometimes known as the Phrynosomatinae, can be found from Panama to the far south of Canada. Many of the group's species can survive in hot, sandy deserts, whereas spiny lizards prefer stony deserts.

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Answer:

There are four main factors that can affect the reaction rate of a chemical reaction:

Reactant concentration. Increasing the concentration of one or more reactants will often increase the rate of reaction. ...

Physical state of the reactants and surface area. ...

Temperature. ...

Presence of a catalyst.

D. Water is used up, Oxygen is produced and Chlorophyll is necessary, but remains unchanged.

At 46.40 degrees Celsius and 897.00 mmHg, 6.20 liters of oxygen gas will contain a mass of 26.37 grams.

Oxygen is an element that is essential to life as we know it. It is a colorless, odorless, tasteless gas that makes up about 21% of the Earth's atmosphere. In its natural form, oxygen is made up of molecules of two oxygen atoms bonded together. Oxygen is vital to all living organisms, including humans, and is necessary for respiration and combustion. Oxygen plays a major role in many chemical processes, such as the burning of fuel, the corrosion of metals, and the formation of acids and bases. It is also an important component of environmental cycles, such as the water cycle and the carbon cycle.

897.00 mmHg = 897.00 mmHg × (1 atm / 760 mmHg) ≈ 1.17934 atm

46.40 °C + 273.15 = 319.55 K

Now, let's rearrange the ideal gas law equation to solve for the number of moles (n):

n = PV / RT

Plugging in the given values:

n = (1.17934 atm × 6.20 L) / (0.0821 Latm/molK × 319.55 K)

Simplifying the equation, we find:

n ≈ 0.2839 moles

To calculate the mass of O₂ gas, we need to multiply the number of moles by the molar mass of O₂:

Molar mass of O₂ = 32.00 g/mol

Mass of O₂ = 0.2839 moles × 32.00 g/mol ≈ 9.0928 g

Therefore, there are approximately 9.0928 grams of O₂ gas in the 6.20 L container at a pressure of 897.00 mmHg and a temperature of 46.40°C.

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The hydrogen bonding between the water molecules affect the properties of the water as they make the molecules stick together which arises the property of the cohesion and the surface tension.

The hydrogen bonding forms between the water molecules as they have the slightly positive charge on the hydrogen atom and the slightly negative charge on the oxygen atom. The bond present between the hydrogen and the oxygen is the covalent bond. The oxygen is more electronegative than the hydrogen this creates the partial positive and the partial negative charges.

The hydrogen bond makes the water molecules to stick together , this property is called as cohesion. It causes the surface tension,

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The total maximum number of electrons with the given quantum numbers is 2 (from the p-orbital) + 4 (from the d-orbital) is 6.

The maximum number of electrons in an atom that can have the quantum numbers n=4, m=+1 is 6.
1. The principal quantum number (n) refers to the energy level of an electron in an atom, which is 4 in this case.
2. The magnetic quantum number (m) represents the orientation of an orbital in space and has a value of +1.
3. To determine the maximum number of electrons, we need to find the possible values of the angular momentum quantum number (l) for the given n and m values.
For n = 4, the possible values of l are: 0, 1, 2, and 3. However, since m = +1, the l values that can accommodate this m value are 1 and 2.
4. The l = 1 corresponds to the p-orbital, which can accommodate 2 electrons with m = +1 (spin up and spin down).
5. The l = 2 corresponds to the d-orbital, which can accommodate 4 electrons with m = +1 (two spin up and two spin down).

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Answer:

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The reaction represented by the equation CH_4 + 2 O_2 → CO_2 + 2H_2O is a combustion reaction.

A combustion reaction is a type of chemical reaction in which a substance reacts with oxygen to produce heat and light. In this case, methane (CH_4) is reacting with oxygen (O_2) to produce carbon dioxide (CO_2) and water (H_2O).

Combustion reactions are typically exothermic, meaning they release energy in the form of heat and light. They are often accompanied by a flame and are commonly observed in processes such as burning of fuels, such as natural gas, gasoline, or wood.

In this specific reaction, methane (CH_4) is the fuel that undergoes combustion, combining with oxygen (O_2) to form carbon dioxide (CO_2) and water (H_2O). The coefficients in front of the molecules indicate the stoichiometric ratio, showing that one molecule of methane reacts with two molecules of oxygen to produce one molecule of carbon dioxide and two molecules of water.

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Answer:

D. (Dissolved oxygen and temperature)

Explanation:

Have a nice day and stay safe <3

The magnitude of the initial acceleration of the balloon is 19.6 m/s^2.

The magnitude of the initial acceleration of the balloon can be determined using the principle of buoyancy. Buoyancy is the upward force exerted on an object immersed in a fluid (in this case, the enclosed gas inside the balloon) due to the difference in pressure between the top and bottom surfaces of the object. This force is equal to the weight of the fluid displaced by the object.

In this scenario, the balloon is released from a tall building, so it experiences the force of gravity pulling it downwards. The initial acceleration of the balloon can be found by considering the net force acting on it.

The net force on the balloon is the difference between the weight of the balloon (due to its mass) and the buoyant force acting on it. The weight of the balloon can be calculated using the equation:

Weight = mass * gravitational acceleration

Given that the total mass of the balloon is 2.0 kg and the acceleration due to gravity is approximately 9.8 m/s^2, the weight of the balloon is:

Weight = 2.0 kg * 9.8 m/s^2 = 19.6 N

The buoyant force acting on the balloon is equal to the weight of the air displaced by the balloon. This can be calculated using the equation:

Buoyant force = density of air * volume of balloon * gravitational acceleration

The density of air is approximately 1.2 kg/m^3. Substituting the given values, we have:

Buoyant force = 1.2 kg/m^3 * 5.0 m^3 * 9.8 m/s^2 = 58.8 N

Finally, the net force acting on the balloon is:

Net force = Weight - Buoyant force = 19.6 N - 58.8 N = -39.2 N

The negative sign indicates that the net force is acting in the opposite direction of the weight. Since force is equal to mass times acceleration, we can calculate the magnitude of the initial acceleration:

Magnitude of initial acceleration = |Net force| / mass

Substituting the values, we have:

Magnitude of initial acceleration = |-39.2 N| / 2.0 kg = 19.6 m/s^2

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Oxygen gas is produced at the positive electrode of the solution.

We know that the term electrolysis has to do with the process by which we can be able to cause the splitting of a compound that is ionic when we pass a direct current through the solution of the compound.

Now we know that at the negative electrode, we are going to have the copper metal that is discharged but at the positive electrode, we are going to have the discharge of oxygen gas. This is because it is higher in the series than sulfate ions.

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Answer:

A. light

Explanation:

I know because with longer wavelengths than visible light, has been "invisible" to the human eye.

Answer:

\(\sf Correct \: answer \: is \: option \: C \rightarrow\: 5\: grams\)

Explanation:

Given:

Half life of cesium : 2 years

Amount of substance initial (N0)= 10 grams

To find:

Amount of substance remaining after 2 years(Nt) = ?

Solution:

Half life: The time interval in which the amount of substance at initial reduces to exact half of it, this reduction is seen in radioactive element.

Given by the formula,

\(N_t = N_0 {( \frac{1}{2} )}^{ \frac{t}{ {t_{ \frac{1}{2}} } } } \)

Where Nt is the amount of substance remaining after time t,

N0 is the amount of substance at time t = 0,

t is the time at which we have to find out how much substance disintegrated from t = 0 to t = t

& t_1/2 is the half life corresponding radioactive sample.

Now the question directly asks for the amount of substance remaining at half life and the initial amount is given, so we can directly half the initial amount, and the final answer would be

\( \sf \frac{10}{2} = {\cancel\frac{10}{2}} \: ^{5} = 5 \: grams\)

let's verify the above answer by calculating it with formula method, substituting the corresponding given data in above formula.

\(N_t = 10 {( \frac{1}{2} )}^ \frac{2 \: years}{2 \: years} \\ \small \sf \:2 \: years \: and \: 2 \: years \: in \: power \: \\\sf \small \: has \: been \: cancelled \: out \\ \: N_t = 10 {( \frac{1}{2} )}^1 \\ N_t = \frac{10}{2} \\ \: \displaystyle \boxed{N_t = 5 \: grams}\)

\( \sf \small \: Answer \rightarrow 5 \: grams \: of \: sample \: would \: remain.\)

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Answer: The concentration of the acid Vincent produced is 0.083 M.

Explanation:

Given: Mass = 6.5 g

Volume = 600.0 mL (1 mL = 0.001 L) = 0.6 L

Moles is the mass of substance divided by its molar mass. So, moles of bromic acid (molar mass = 128.91 g/mol) are calculated as follows.

\(Moles = \frac{mass}{molar mass}\\= \frac{6.5 g}{128.91 g/mol}\\= 0.05 mol\)

Molarity is the number of moles of a substance present in liter of a solution.

Therefore, molarity (concentration) of the given solution is calculated as follows.

\(Molarity = \frac{no. of moles}{Volume (in L)}\\= \frac{0.05 mol}{0.6 L}\\= 0.083 M\)

Thus, we can conclude that the concentration of the acid Vincent produced is 0.083 M.

Answer:

It is disproved that atoms are indivisible.  Which is answer choice B.

Explanation:

I got it right on Edge. :)

We have that this means that It disproved that atoms are indivisible

Option C

From the question we are told

Which of Dalton's ideas about the atom did J.J. Thomson's experiment disprove?

Generally

Dalton defined an atom as the smallest particle of an element

This was disapproved of by J.J. Thomson's experiment

Therefore

This means that It disproved that atoms are indivisible

Option C

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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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Answer:

The correct answer would be D) chlorophylls.

Explanation:

Chlorophyll refers to the green pigment present in cyanobacteria and chloroplasts of plants and algae. It is the pigment which is able to absorb light which makes it an essential element for photosynthesis.

Answer:

Explanation:

The new volume of the gas can be found by using the formula for Boyle's law which is

\(P_1V_1 = P_2V_2\)

Since we are finding the new volume

\(V_2 = \frac{P_1V_1}{P_2} \\\)

From the question we have

\(V_2 = \frac{1.56 \times 1}{3} = \frac{1.56}{3} \\ \)

We have the final answer as

Hope this helps you

: PM2.5 is defined as the mass concentration of particles in the air less than or equal to 2.5 micrometers in diameter.Question 15: False, carbon dioxide (CO2) is not considered a criteria air pollutant.

Question 16: The closest answer is 50%, but the exact percentage is not provided in the question.Question 17: The term "photochemical smog" is most synonymous with ozone (O3), which is a criteria air pollutant.Question 18: True, attainment of ambient air quality standards requires that measured concentrations at all monitoring stations within an air district are below ambient air standards.

Question 14 asks about the definition of PM2.5. PM2.5 refers to particulate matter with a diameter less than or equal to 2.5 micrometers. It represents the mass concentration of particles suspended in the air, which are small enough to be inhaled into the respiratory system and can have adverse health effects.

Question 15 states whether carbon dioxide (CO2) is a criteria air pollutant. Criteria air pollutants are a set of pollutants regulated by environmental agencies due to their detrimental impact on air quality and human health. However, carbon dioxide is not considered a criteria air pollutant because it does not directly cause harm to human health or the environment in the same way as pollutants like ozone or particulate matter.

Question 16 asks about the percentage of carbon monoxide (CO) emissions from mobile sources in Santa Clara County. While the exact percentage is not provided in the question, the closest answer option is 50%. However, it is important to note that the precise percentage may vary depending on specific local conditions and emissions sources.

Question 17 inquires about the criteria air pollutant most synonymous with the term "photochemical smog." Photochemical smog is primarily associated with high levels of ground-level ozone (O3). Ozone is formed when nitrogen oxides (NOx) and volatile organic compounds (VOCs) react in the presence of sunlight, creating a hazy and polluted atmospheric condition.

Question 18 addresses the concept of "attainment" of ambient air quality standards. To achieve attainment, measured concentrations of pollutants at all monitoring stations within an air district must be below the established ambient air quality standards. This ensures that the air quality in the given area meets the required standards for protecting human health and the environment.

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Answer:High-purity chemicals are all-the-more important during the manufacturing process because chemicals are often used in bulk. ... In plastics, for example, an impure chemical substrate can produce an end-product that's too brittle to use. In pharmaceuticals, one impure component can render a drug dangerous

Explanation:

Answer:

Distance = speed * Time

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Answer:

Distance formula (x2 - a1) ° + (y2 - Yı)?

d - d = distance

(x1, Y1) coordinates of the first point

(x2, Y2) = coordinates of the second point

Answer:

total displacement \time

Explanation:

 Atmospheric pressure is the force exerted by the weight of the air molecules in the atmosphere. It is measured in millimeters of mercury (mm Hg) or in units of pressure such as pascals (Pa). The atmospheric pressure decreases with altitude, since there are fewer air molecules above a certain height.

The composition of the atmosphere also changes with altitude, since some gases are more easily dissolved or dispersed than others. Oxygen is one of the most important gases in the atmosphere, since it is necessary for respiration in most organisms. The percentage of oxygen in the atmosphere remains relatively constant at about 21% up to an altitude of about 10 km, after which it decreases gradually.

Given that the atmospheric pressure at the summit of a high mountain is 380 mm Hg and that the atmosphere is composed of 21% oxygen, we can calculate the partial pressure of oxygen at this altitude using the following formula:
Partial pressure of oxygen = Total pressure x Fraction of oxygen
where the fraction of oxygen is the percentage of oxygen divided by 100. Substituting the values given, we get:
Partial pressure of oxygen = 380 mm Hg x 0.21 = 79.8 mm Hg Therefore, the partial pressure of oxygen at the summit of a high mountain is about 79.8 mm Hg.
In conclusion, the correct answer to the question is: 80 mm Hg (rounded to the nearest whole number).

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The one that has the most thermal energy out of the following is 1 gallon of boiling water.

Thermal energy is the energy generated by a material as a result of particle movement inside the material. Thermal energy causes things to have an internal temperature, which may be measured. The greater the temperature measured, the quicker the particles travel within the system.

The full-size candy bar that is melting melts at a slower particle rate compared to the 1 gallon of boiling water whose particles travel faster.

A swimming pool on a sunny day has average thermal energy. Also, the entire atmosphere of the earth may not experience the same amount of thermal energy from the sunlight.

Therefore, we can conclude that the most thermal energy out of the following is 1 gallon of boiling water.

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A minor contribution from star nucleosynthesis to the Big Bang

Helium is utilized to create a neutral protective atmosphere for the production of fiber optics and semiconductors as well as for arc welding because of how little it reacts. Nitrogen is also used to fill car airbags after an accident since it diffuses quickly and can be utilized for detect defects, such as those in automotive air conditioning systems.

Natural gas reserves are the most prevalent source of helium, a non-renewable resource. Natural gas in Texas, Oklahoma, and Kansas is among the most helium-rich in the world due to the region's geology.

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The mass of (NH4) 2S in the solution is : Mass = 0.0600 mol × 60.08 g/mol = 3.60 g.

The given molarity and volume of the solution can be used to calculate the number of moles of ammonium sulfide (NH4)2S.Then, the number of moles can be converted to mass using the molar mass of (NH4)2S.Mass of ammonium sulfide (NH4)2S in 3.00 L of a 0.0200 M solution is given by : Mass = moles × molar mass.The number of moles of (NH4)2S can be found using the equation:Molarity = Number of moles / Volume.Rearranging this equation, we get:Number of moles = Molarity × Volume Number of moles of (NH4)2S = 0.0200 M × 3.00 L.Number of moles of (NH4)2S = 0.0600 mol.The molar mass of (NH4)2S can be calculated by summing the molar masses of ammonium (NH4) and sulfide (S) ions.Molar mass of (NH4)2S = (2 × Molar mass of NH4) + Molar mass of S= (2 × 14.01 g/mol) + 32.06 g/mol= 60.08 g/mol.

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Answer:

The sexual phase, called the gametophyte generation, produces gametes, or sex cells, and the asexual phase, or sporophyte generation, produces spores asexually. In terms of chromosomes, the gametophyte is haploid (has a single set of chromosomes), and the sporophyte is diploid (has a double set

Answer:

Gametophyte generation

Answer:

Explanation:

given mass on earth =98 kg

gravitational pull on mars =3.711 m/s2

gravitational pull on venus =8.87 m/s2

weight of the body on mars =weight on earth/9.81 m/s2 *3.711 m/s2

W=98 kg*3.711 /9.81m/s2

W=37.07 kg

weight on the venus =weight on earth*8.87 m/s2 /9.81 m/s2

W= 98 kg*7.87 m/s2/9.81 m/s2

W=78.62 kg