Sherman suggests that reproduction always creates individuals with adaptive traits. Does this seem correct? Why or why not?

Answer:

Cellular Respiration: C6H12O6 + 6O2 → 6CO2 + 6H2O. 
Photosynthesis: 6CO2 + 6H2O → C6H12O6+ 6O.

Explanation:

:)

Answer:

An exothermic process releases heat, causing the temperature of the immediate surroundings to rise. An endothermic process absorbs heat and cools the surroundings.”

Answer:

a. amount of algae on the glass

Explanation:

Physical and chemical circumstances are examples of abiotic elements, which are ecosystem components that are not alive. Because they are non-living and affect the ecosystem's characteristics, the rock composition, the quantity of algae on the glass, and the water temperature are all examples of abiotic elements in an aquarium environment.

Although the quantity of fish is a biotic element since it is a live organism and a component of the ecosystem.

Following are the scientific methods asked in question -

The scientific method, an empirical technique of learning, has governed the development of science from at least the 17th century (with notable practitioners in previous centuries; see the article history of scientific method for additional detail.)

It takes thorough observation and the use of strong skepticism regarding what is observed because one's perception of the observation may be influenced by cognitive presumptions. It entails creating hypotheses using induction based on these observations, testing the accuracy of those hypotheses using experimental and measurement-based statistical testing of the inferences drawn from them, and then adjusting (or discarding) those hypothese in light of the experimental findings.

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Answer:

A. The air particles pushing on the tire as they expand

Explanation:

Answer: A is the right answer

Explanation:

The air pressure inside a bicycle tire is caused by the weight of the air molecules pressing down on the surface of the tire. This is why you can sometimes hear a hissing sound when you first get a flat tire – it’s because the air is escaping from the tire and equalizing the pressure inside and outside of the tire.

3.2x10^23 atoms of MgO would have more number of moles as shown.

We know that the number of moles is a concept that we can be able to glean from Avogadro. The idea of mole has to do with the amount of substance that contains the same number elementary entities as what we have in carbon 12.

We have been told that we are to compare 0.2 moles of KI and then we also look at 3.2x10^23 atoms of MgO. We would then have to find the number of moles that we are going to have in the 3.2x10^23 atoms of MgO as we have written here.

If 1 mole contains 6.02 * 10^ 23 atoms

x moles would contain 3.2x102^3 atoms

x = 1 mole * 3.2x10^23 atoms/ 6.02 * 10^ 23 atoms

x = 0.53 moles

Hence the number of moles in the KI is less than that in the MgO.

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Answer:

2.04 moles

Explanation:

1 liter = 1 [tex]dm^{3}[/tex]

and at S.T.P (standard temperature and pressure) one mole of any gas occupies 22.414 [tex]dm^{3}[/tex]

setting up mole and volume ratio

moles   :   volume

   1        :    22.414

   X       :    45.8

X = 45.8/22.414

X = 2.04 moles

The molar mass of the non-electrolyte solute is 285.7 g/mol.

The freezing point of cyclohexane is 6.6°C

The freezing point depression, ΔT, of hexane by the unknown non-electrolyte will be:

ΔT = 5.1  - 6.6

ΔT = 1.5 °C

Recall that ΔT = iKfm

where;

For the solution:

i = 1

Kf for cyclohexane = 20.2 deg⋅kg/mole of solute

m = ?

m = ΔT/iKf

m = 1.5/1 * 20.2

m = 0.07 molal

Molality = moles of solute/mass of solvent in kg

mass of solvent = 2.50 g or 0.0025 kg

moles of solute = 0.07 * 0.0025

moles of solute = 0.000175 moles

0.050 g of the non-electrolyte = 0.000175 moles

Molar mass of the non-electrolyte = 0.05/0.000175

Molar mass of the non-electrolyte = 285.7 g/mol

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The normality of the acid solution is 0.53N.

The process by which an acid and a base neutralize one another. As a result of their reaction, an acid and a base produce heat as well as salt and water.

To calculate the normality of the acid solution, you need to know the number of moles of acid used in the neutralization reaction. Since the volume of the acid solution is given in cm³ and the molarity (normality) is in moles per liter, you will first need to convert the volume to liters.

1 cm³ = 0.001 liters

So, 50 cm³ = 0.05 liters

To find the number of moles of acid used, divide the volume in liters by the molarity:

moles acid = volume acid/molarity acid

Next, you can use the balanced equation for the neutralization reaction between KOH and the acid to find the number of moles of KOH that reacted.

1 mole KOH = 1 mole H+

The number of moles of KOH is 1.4/56.11

moles acid = volume acid / molarity acid = 0.05 / (1.4/56.11)

molarity acid = 0.05 / (1.4/56.11) = 0.53 n.

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Answer:

Explanation:

The equivalent mass of the metal can be calculated using the following equation:

Equivalent Mass = (3.15 g Nitrate)/(1.35 g Metal Oxide) * (1 mole Nitrate)/(1 mole Metal Oxide)

Using the molar masses of nitrate (NO3) and metal oxide (MO):

Equivalent Mass = (3.15 g NO3)/(1.35 g MO) * (1 mol NO3)/(1 mol MO)

= (3.15 g NO3)/(1.35 g MO) * (62.00 g NO3)/(molar mass of MO)

The molar mass of the metal oxide (MO) must be known to calculate the equivalent mass of the metal.

The number of gold atoms in 0.330 ounce, 18 K gold bracelet would be 2.12 x [tex]10^{22[/tex] atoms of gold.

1 ounce = 28 grams

0.330 ounce = 0.330 x 28 = 9.24 grams

18 K gold = 75% gold = 9.24 x 0.75 = 6.93 grams

In other words, a 0.330-ounce, 18 K gold bracelet contains 6.93 grams of actual gold.

Mole of 6.93 gold = 6.93/196.967 = 0.0352 mol

1 mole = 6.022 x [tex]10^{23[/tex] atoms

0.0352 mole = 0.0352 x 6.022 x [tex]10^{23[/tex]

                      = 2.12 x [tex]10^{22[/tex] atoms

In other words, a 0.330-ounce, 18 K gold bracelet contains 2.12 x [tex]10^{22[/tex] atoms of gold.

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Answer:

The molar mass of an unknown gas can be determined using the concept of effusion. Effusion is the process of a gas passing through a small hole or porous partition. The rate of effusion of a gas is inversely proportional to the square root of its molar mass. This relationship is described by the Graham's law of effusion.

Explanation:

Graham's law of effusion states that the rate of effusion of a gas is inversely proportional to the square root of its molar mass.

R = k √M

Where R is the rate of effusion, k is a constant, and M is the molar mass of the gas.

If we know the rate of effusion of COCl2 and the rate of effusion of an unknown gas and we know that the unknown gas effuses at a rate 1.5 times the rate of COCl2.

R unknown = 1.5 * R COCl2

We can use this information to find the molar mass of the unknown gas.

M = (R COCl2 / (1.5 * R unknown) )²

If we know the molar mass of COCl2, we can substitute it in the equation and solve for the molar mass of the unknown gas.

It's worth noting that this problem requires you to know the molar mass of COCl2 which is not provided in the question. And also it's important to know that the values of the constant k in the equation for the different gases are not the same, so you need to use the same gas as reference.

Cloud and dew both form when water vapor condenses. The last option.

Condensation is a phase-change process involving a change from the vapor phase to the liquid phase. It is the opposite of evaporation which involves a phase change from liquid to vapor.

Clouds are formed when microscopic water vapors present in the upper stratosphere condense to form visible water vapor or ice crystals. Dews, similarly, are formed when water vapors condense into visible liquids.

In other words, both clouds and dews are formed by the condensation of water vapors.

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Answer:

The number and variety of plants would increase.

Explanation:

A is incorrect because if deer eat plants and the population of deer are increased there wouldn't be an increase of plants. There would be a decrease of plants be ause there would be more deer eating plants. B is incorrect because if there are more deer, then the amount of plants will also decrease. C is correct because with a surplus of deer, the amount of plants would decrease because of all the deer. Therefore, the variety of plants would decrease because they are being eaten. D is incorrect because if there is a population growth of deer, that means more deer are eating the plants. So, the plant population would decrease.

Hope this helps! :)

In a forest, deer eat plants for survival.The number and variety of plants would increase in the deer population to affect the plant life of an ecosystem. Therefore, option A is correct.

An ecosystem is a geographical area in which plants, animals, and other organisms, as well as weather and landscape, coexist to form a life bubble. Ecosystems contain both biotic (living) and abiotic (nonliving) components.

An ecosystem is a group of living organisms (plants, animals, and microbes) in a specific location. The term 'eco' refers to a region of the world, and the term'system' refers to the organizing units.

Because deer eat a wide variety of plants, the plant population would suffer as a result. More deer necessitates more food. Plant predation by deer populations would reduce the population of other animals that eat plants and plant seeds.

Thus, option A is correct.

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A proton's density is equal to 3.962 E14 g/cm3, given that it has a mass of 1.0073 amu and a diameter of 1.73 1015 m.

Although protons were once thought to be elementary particles, the Standard Model of particle physics now recognises them as composite particles that comprise three valence quarks. Protons and neutrons are collectively referred to as hadrons.

Proton mass = 1.0073 amu, amu = 1.66054 E-24 g, and g proton = (1.0073 amu)(1.06654 E-24 g/amu = 1.074 E-24 g.

V = 4/3πr³\s∴ For example, r = D/2 ≈ 1.73 E-15 m)/2 = 8.65 E-16 m, where V = (4/3) (8.65 E-16 m) 3 = (1.074 E-24 g)/(2.711 E-39 cm3) = 3.962 E14 g/cm3

Protons include the H+ ion or the hydrogen atom's nucleus. Regardless of the isotope, each hydrogen atom has one proton, each helium atom has two, each lithium atom has three, and so on.

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There are two different kinds of food chains: the detrital food chain, which starts with dead organic matter, and the grazing food chain, which starts with autotrophs.

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In plate tectonics, lithosphere which is made up of the crust and upper mantle—is broken into large rocky plates. These plates lie on top of a partially molten layer of rock called the asthenosphere.

Plate tectonics is a scientific theory that explains how major landforms are created as a result of Earth’s subterranean movements. The theory, which solidified in the 1960s, transformed the earth sciences by explaining many phenomena, including mountain building events, volcanoes, and earthquakes.

In plate tectonics, Earth’s outermost layer, or lithosphere—made up of the crust and upper mantle—is broken into large rocky plates. These plates lie on top of a partially molten layer of rock called the asthenosphere. Due to the convection of the asthenosphere and lithosphere, the plates move relative to each other at different rates, from two to 15 centimeters (one to six inches) per year.

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The number of atoms in the reactants and products of each reaction is the same. The last option.

The law of conservation of matter states that during chemical reactions, matter can neither be created nor destroyed but can be converted from one form to another. This law is also applicable to energy and atoms during chemical reactions.

In other words, all chemical reactions, as a rule of thumb, obey the law of conservation. Thus, for any chemical reaction:

Therefore, the statement that supports the student's conclusion that the two reactions follows the law of conservation of matter would be that the number of atoms in the reactants and products of each reaction is the same.

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The compound is non polar covalent in  its structure as said above.

Let us recall that the melting point has to do with the temperature at which there is the conversion of the solid to a liquid. We know that the melting point of the compound would depend on the structure of the compound.

If the compound would have a melting point that is about  20°C, the implication is that the compound is not be held by very strong intermolecular forces hence it must be covalent.

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mass can be calculated using the formula: [tex]m=DV[/tex]

[tex]m=(\frac{4.54g}{1mL})(6.0mL)[/tex]

[tex]m = 27g[/tex]

The Method of Mixtures Electrical Method is a method used to determine the electrical conductivity of a material.

The Electrical Method is a geophysical prospecting technique that uses electrical resistivity to map subsurface features, such as geological structures, fractures, and mineral deposits.

It involves measuring the amount of current that passes through a mixture of two materials under the application of a known voltage. The electrical conductivity of each material can then be determined by calculating the ratio of the current to the applied voltage. The electrical conductivity obtained from the Method of Mixtures Electrical Method can be used to characterize materials such as semiconductors and insulators.

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The boiling point of benzene when the external pressure is 440 torr is 80.1 °C (176.2 °F).

What is benzene?

Benzene is an organic compound composed of six carbon atoms in a ring structure, with one hydrogen atom attached to each carbon atom. It is a highly flammable, colorless liquid with a sweet smell. Benzene is a natural component of crude oil and is one of the most important organic chemicals used in industry. It is used in the production of plastics, resins, synthetic fibers, rubber, pesticides, detergents, drugs, and dyes. It is also used as a solvent for fats, oils, waxes, resins, and inks. Benzene is classified as a carcinogen and its exposure can cause a variety of adverse health effects, including acute myelogenous leukemia, lymphomas, and other forms of cancer.

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Answer:

In X2​O3​,. Percentage of oxygen by weight = 31.58. Percentage of X by weight = 68.42. Let the atomic weight of X = x. 2x+482x​×100 = 68.42. ∴ x = 51.99.

Explanation/solution in image

The volume of the water is obtained as 72 mL.

We know that the heat of vaporization is the heat that is required to raise convert the substance from the liquid state to the gaseous state. Now, we know that we can be able to find the energy from the use of the formula;

H = mL

H = heat that is required

m = Number of moles of the object

L = Heat of vaporization

We know from the problem that we have that;

H = 163 kJ

L = 40.66 kJ/mol

Then we would have;

Number of moles = H/L

= 163kJ/40.66 kJ/mol

=  4 moles

Mass of water = 4 moles * 18 g/mol = 72 g

Since the density of water = 1 g/mL

Volume = Density * mass

= 1 g/mL * 72 g

= 72 mL

Thus, the volume of the water that would be vaporized in the process that we have described is about a volume of 72 mL.

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Answer:

490.87 L

Explanation:

Molar mass of N2 = (1 x 2) = 2 g

Moles of N2 in the airbag = 43.8/2 = 21.9 moles

One mole of any gas occupies a volume of 22.414 L at S.T.P

setting up ratio between moles and volume;

moles    :   volume

   1         :   22.414

   21.9    :      X

X = (21.9 x 22.414)

  = 490.87 L

Answer: A point or an object moving in a straight line is accelerated if it speeds up or slows down.

Explanation:  Motion on a circle is accelerated even if the speed is constant, because the direction is continually changing. For all other kinds of motion, both effects contribute to the acceleration.

Answer:

the evidence statement contains reasoning.

Explanation:

the reason that this piece of information is reasoning rather than evidence is because it doesn't tell us the temperatures of the other substances (if any.) if we look at this substance and it has the most constant temperature compared to the others, how will we know if it is the most constant if we don't know the other substances' data?

this is reasoning because the evidence should tell us more about the substance and the others.

Accidental cosmic background radiation, remarkably uniform, billions of years ago.

what is radiation ?

Radiation is a form of energy that is emitted in the form of waves or particles. It is an invisible form of energy that travels through space. Radiation is present everywhere in the environment and is emitted from many sources, both natural and man-made.

Natural sources of radiation include the sun, rocks, soil, and the air. Man-made sources include nuclear power plants, medical devices, and X-ray machines. There are several forms of radiation including alpha, beta, and gamma radiation. Alpha radiation is made up of particles, while beta and gamma radiation consists of electromagnetic waves. Different types of radiation have different properties that make them useful in various applications. For example, gamma radiation is used in medical imaging.

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