What does the map show about the Earth 225 million years ago ?​

Answers

Answer 1

About 225 million years ago, the earth contained a single landmass; called Pangaea. That landmass was divided into two landmasses, viz. Laurasia and Gondwana Land; about 200 million years ago. ... The Gonwana Land included the modern day India, Australia, South America, South America and Antarctica.

Answer 2

Answer:

It shows Pangaea.

Explanation:

The map about the Earth 225 million years ago shows the supercontinent Pangaea, in which present-day continents were located close to each other. At that time, plants and animals were moved freely over all of the continents. Pangaea was centred on the Equator and surrounded by the superocean Panthalassa.


Related Questions

When scientists say that a theory can never be proven, what are they actually saying?​

Answers

They are saying that every theory can eventually be changed a bit due to further research. It does not mean the theory is bad, just that it can become better.

When scientists say that a theory can never be proven, they are emphasizing the principle that scientific theories are always open to revision or challenge by new evidence. This reflects the provisional nature of scientific knowledge and the understanding that theories can be robust and reliable without being definitively proven. It underscores science as an ongoing, dynamic process of exploration and discovery.

When scientists say that a theory can never be proven, they are highlighting a fundamental principle of scientific inquiry. The nature of scientific theories is such that they can never be definitively proven because there is always the possibility for new evidence or observations to emerge that could challenge the existing understanding. Scientific theories are considered robust and reliable not because they are proven, but because they have withstood rigorous testing and have not been disproven. This principle is grounded in the philosophy of science, notably the ideas presented by British philosopher Karl Popper, who argued that scientific theories can never be proven, only disproven. Moreover, this concept underlines the inherent uncertainty and the provisional nature of scientific knowledge. It acknowledges that our current understanding is the best approximation of truth based on available evidence. However, with the advent of new technology, discoveries, or methodologies, theories might need to be revised or replaced. This open-endedness is what drives scientific progress and is a key reason why scientists prefer terms like support over prove. It ensures that science remains a dynamic and evolving field, always open to refinement and improvement in the light of new evidence. For instance, even highly successful theories, such as the theory of gravity or the theories of evolution, are seen as subject to revision. This doesn't diminish their credibility but rather highlights the strength of the scientific method: the capacity for theories to be tested, challenged, and refined over time. This perspective is crucial for advancing our understanding of the natural world, demonstrating that scientific inquiry is an ongoing process of exploration and discovery.

predict the products of the decomposition of lithium nitride, Li3N

A) Li3 + N

B) Li3 + N2

C) Li + N

D) Li + N2​

Answers

Answer;

D) Li + N2​

Explanation;A decomposition reaction is a type of chemical reaction in which one reactant yields two or more products. Lithium nitride undergoes thermal decomposition to produce Lithium and nitrogen gas. This reaction takes place at a temperature of 300° to 500°C in a vacuum.The equation for the reaction is;

                     2Li3N(s) → 6Li(s) + N2(g)

NEED HELP ASAP !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Temperature...
A.
is an indicator of the amount of thermal energy that an object possesses.
B.
only pertains to heat transfer, not thermal energy.
C.
is exactly the same as thermal energy.
D.
is not related to thermal energy.

1. An ice cube that is dropped into a glass of water melts because
A.
the ice is denser than the water.
B.
the water is denser than the ice.
C.
the water is liquid, and the ice is solid.
D.
heat energy moves from the water to the ice.

2.What type of energy transformation occurs when a light bulb is turned on?
A.
Mechanical energy is converted into kinetic energy.
B.
Electrical energy is transformed into heat and mechanical energy.
C.
Electrical energy is transformed into heat and light energy.
D.
Potential energy is converted into kinetic energy.

Answers

Temperature... - A

1. An ice cube that is dropped into a glass of water melts because - D

2 What type of energy transformation occurs when a light bulb is turned on -

C

♫ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ♫

Temperature is an indicator of the amount of thermal energy that an object possesses [option A]

An ice cube that is dropped into a glass of water melts because heat energy moves from the water to the ice [option D]

Electrical energy is transformed into heat and light energy [option C]

Hope This Helps You!

Good Luck (:

Have A Great Day ^-^

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Is it possible to change the strength of an acid? Explain how you would do this.

Answers

Answer:

Reducing or increasing the amount of H+ ions / hydronium (H3O+) ions

Explanation:

To reduce the pH (reducing the strength of the acid) can be done by adding a base (including a conjugate base such as bicarbonate ion) which will absorb the H+ ions either through adsorption or reaction.

Adding more H+ decreases the pH of the acid making it stronger. This can be done by adding HCL that will dissociate and increase the H+ ions.

Final answer:

The strength of an acid can be modified by altering its molecular structure or by changing the acid's concentration in a solution. Acid strength is directly related to the ability of the acid to donate hydrogen ions, which is influenced by the electronegativity of the atoms involved in the acid molecule.

Explanation:

It is indeed possible to change the strength of an acid. The strength of an acid depends on its ability to donate hydrogen ions (H+) in solution. Strong acids are characterized by 100% ionization in solution, while weak acids only partially ionize. The molecular structure of an acid, especially the electronegativity of its central atom, plays a significant role in acid strength. By modifying the molecular structure, such as by substituting atoms or groups with more electronegative ones, the acid strength can be changed.

For instance, adding more electronegative elements to the structure can increase the acid's ability to donate H+. Moreover, using the periodic table as a guide, we can predict the acid strength: as you move from left to right and down the periodic table, acid strength increases due to increasing electronegativity. One could also alter acid concentration or mix it with other substances (like bases) to change the pH, and thus, the perceived strength of the acid in a given solution.

Which phrase correctly describes temperature?

Answers

The phrase correctly describes temperature is average translation kinetic energy of the particles in an object. Therefore, option D is correct.

What describes temperature ?

It is described as a measurement of the particle's typical kinetic energy inside an objective.

As a result, various kinetic energies can be experienced by particles. It may take the form of rotational kinetic energy, translational kinetic energy, or vibrational kinetic energy.

The average kinetic energy of all the atoms or molecules that make up a material is how we define its temperature. The kinetic energy of a substance's constituent particles varies.

A distribution can be used to depict the particles' kinetic energy at any particular moment.

Thus, option D is correct.

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Sort the properties of metalloids into the correct categories

(See image)

Answers

Metallic Characteristics:

Lustrous

Solid at room temerature

In-Between Characteristics:

Semiconducting

Amphoteric

Nonmetallic:

Brittle

What is the pressure exerted by 1.0 mol of a gas with temperature of 20 C and a volume of 7.5 L?

Answers

We have to assume the gas behaves similar to an ideal gas and we can use the ideal gas law equation

PV = nRT

Where

P - pressure

V - volume - 7.5 L

n - number of moles - 1.0 mol

R - universal gas constant - 0.0821 L.atm/mol.K

T - temperature in kelvin

20 degrees celcius + 273 = 293 K

Substituting the values in the equation

P x 7.5 L = 1.0 mol x 0.0821 L.atm/mol.K x 293 K

P = 3.2 atm

The pressure exerted is 3.2 atm

How do decomposers get energy?
A. by making their own food
B. by eating other organisms
C. by converting light energy into chemical energy
D. by breaking down the waste materials of dead organisms

Answers

I think the aswer is D

What is the theoretical yield of NaCl would result from reacting 5.00 mil of Na2CO3 with excess HCl?

Answers

Answer:

584.4 g.

Explanation:

Na₂CO₃ reacts with HCl according to the balanced reaction:

Na₂CO₃ + 2HCl → 2NaCl + H₂O + CO₂.

It is clear that 1.0 mole of Na₂CO₃ reacts with HCl to produce 2.0 moles of NaCl.

Using cross multiplication:

1.0 mole of Na₂CO₃ → 2.0 moles of NaCl.

5.0 moles of Na₂CO₃ → ??? moles of NaCl.

The no. of moles of NaCl produced from 2.0 moles of Na₂CO₃ = (2.0 mol)(5.0 mol)/(1.0 mol) = 10.0 mol.

∴ The theoretical yield of NaCl = no. of moles of NaCl x molar mass of NaCl = (10.0 mol)(58.44 g/mol) = 584.4 g.

A gas has a volume of 5 litres at 3 atm. To expand the volume to 7500 ml, what new pressure (in atm) have to be

Answers

Boyle’s law states that for a fixed amount of gas the pressure of gas is inversely proportional to the volume of the gas at constant temperature.

P1v1 = P2v2

Where P1 is pressure and v1 is volume at first instance

And P2 is pressure and v2 is volume at second instance

Substituting the values

3 atm x 5 L = P2 x 7.5 L

P2 = 2 atm

The new pressure of the expanded volume of gas is 2 atm

Which substances dissolve in water

Answers

Because water molecules are polar, water can dissolve many other polar substances. Water can also dissolve ionic compounds such as table salt.

Soluble substances anything power like that can be broken down by water like kool aid powder sugar salt. Please give me brainliest answer.

:) Hope this helped have a good day!

Identify which property changes as temperature increases to increase the reaction rate.
A) Increasing the temperature decreases the molecular motion.
B) Increasing the temperature reduces the collision frequency.
C) Increasing the temperature divides the solubility of the solute.
D) Increasing the temperature increases the energy of the molecules.

Answers

Answer:D

Explanation:according to Kinetic molecular theory the kinetic energy is directly proportional to the absolute temperature.

It means that when we increase the temprature the motion of molecules increase,as a result the rate of reaction is also increased.

Which means that the effective collision is also increased.

Answer:

D) Increasing the temperature increases the energy of the molecules.

Explanation:

Increasing the temperature increases the energy of the molecules.

As temperature increases the energy of the molecules increases and the energy of the collision making it more likely for a reaction to occur.

Reducing the volume of a contained gas by one third, while holding temperature constant, causes pressure to Question 1 options:

Answers

Answer:

Reducing the volume of a contained gas by one third, while holding temperature constant, causes pressure to increase by 3.0 times.

Explanation:

Boyle’s Law : At constant temperature, the  volume of a given quantity of a gas  varies inversely with its pressure.It is clear from the data that V ∝ 1/P.Also, PV = constant.

So, for two different values of both P and V:

∴ P₁V₁ = P₂V₂.

∵ V₂ = 1/3V₁

∴ P₂ = P₁V₁/V₂ = P₁V₁/(1/3V₁) = 3P₁.

explain how the water in an iceberg may fall as rain over a city

Answers

They go through something called the Water Cycle,

First, they will go through the Evaporation Step where the water will evaporate into a gas and raise into the clouds.

Then, they will go through the Condensation Step where the Vapor that went into the clouds will cool down and turn back into liquid water.

Next, they will go through the Precipitation Step where the Water (which can be Rain Hail snow or Sleet) will fall out of the clouds.

Finally, all of the fallen water will collect into Lakes, Oceans, Rivers, Streams and sometimes water under the ground.

if the water is still turning into vapor from condensation it will turn to rain eventually but it cant be evaporated if heat cant get the water think as a air bubble the air remains until it pops or if its frozen in ice it will remain till the water melts and exposes the air to the world again.

The specific heat of aluminum is 0.897j/(g•°C). If a 22.6 g sample of aluminum is heated from 25°C to 250°C, then how much heat will the aluminum absorb?

Answers

Q=mcat

=(22.6)(.897)(250-25)

4,561.245 or 4.5 * 10^-3

To find the heat absorbed by the aluminum, use the formula Q = mc riangle T. The aluminum will absorb 4554.525 joules of heat when its temperature is increased from 25°C to 250°C.

The question involves calculating the amount of heat absorbed by a sample of aluminum when it is heated from one temperature to another, using the specific heat capacity of aluminum. The formula for heat absorbed or released is Q = mc riangle T, where Q is the heat absorbed, m is the mass of the substance, c is the specific heat capacity, and  riangle T is the change in temperature.

To solve for Q in the given case:

Mass (m) of the aluminum sample = 22.6 g

Specific heat capacity (c) of aluminum = 0.897 J/g°C

Temperature increase ( riangle T) = 250°C - 25°C = 225°C

Now plug in the values: Q = 22.6 g * 0.897 J/g°C * 225°C = 4554.525 J

The aluminum will absorb 4554.525 joules of heat.

Which function do aspen trees serve in mountain area?
A. producers
B. scavengers
C. primary consumers
D. secondary consumers

Answers

A is your answer

They're producers, they provide nutrients for primary consumers which get eaten by secondary consumers then scavengers come in and clean up the mess :)

Final answer:

Aspen trees in a mountain area serve as the role of producers. They convert sunlight, water, and carbon dioxide into glucose for their survival and for providing nourishment for the primary consumers.

Explanation:

In a mountain area, aspen trees serve as producers. Producers are organisms in an ecosystem that produce their own food through photosynthesis, like plants and particular forms of bacteria. Aspen trees, being plants, convert sunlight, water, and carbon dioxide into glucose which serves as their food. This process of photosynthesis not only allows aspen trees to grow and survive, but also contributes to the overall ecosystem by storing energy and providing nourishment for primary consumers. Hence, they are at the base of the food chain in respective ecosystems.

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The Ethical, Legislative, Social Initiative is the agency responsible for _____.

convicting and closing poorly run forensic laboratories
the first DNA-analysis-based convictions
upholding the guidelines for managing a DNA laboratory
consideration of ethical, legal, and social implications related to the human genome​

Answers

They are responsible for DNA

Answer:

considering ethical, legal, and social implications related to the human genome

Explanation:

If an atom has 17 protons, 15 neutrons, and 20 electrons, what is the atom's electrical charge?

Answers

The overall charge on this ion is -3. Neutrons don’t carry a charge, while protons and electrons carry a net +1 and -1 charge, respectively. In this case, the electrons outweigh the protons by 3, making the overall charge -3.

Hope this helps!

chemical equilibrium between gaseous reactants and products is shown.

N2(g) + 3H2(g) ⇌ 2NH3(g)

How will the reaction be affected if the pressure on the system is decreased?

Answers

Answer:

The reaction is shifted to the left.

Explanation:

Le Châtelier's principle states that when there is an dynamic equilibrium, and this equilibrium is disturbed by an external factor, the equilibrium will be shifted in the direction that can cancel the effect of the external factor to reattain the equilibrium.When there is a decrease in pressure, the equilibrium will shift towards the side with more no. of moles of gas molecules of the reaction.The reactants side (left) has 4.0 moles of gases and the products side (right) has 2.0 moles of gases.So, decreasing the pressure will shift the reaction to the side with more moles of gas (left side).so, the reaction is shifted to the left.

Final answer:

Decreasing the pressure on a system at chemical equilibrium will cause the reaction to shift towards the side with fewer moles of gas.

Explanation:

When the pressure on a system at chemical equilibrium is decreased, the system responds by shifting in the direction that reduces the number of moles of gas. In this case, decreasing the pressure will cause the reaction to shift towards the side with fewer moles of gas, which is the reactant side. The reaction will produce more N2 and H2 and less NH3.

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A 3.87mg sample of an organic compound gave 5.80mg CO² and 1.58mg h²O on combustion. Deduce the empirical formula of the compound.​

Answers

Answer:

C₃H₄.

Explanation:

The organic compound gives CO₂ and H₂O.

The no. of moles of CO₂ produced = mass/molar mass = 5.80 mg/44.0 g/mol = 0.1318 mmol.

Which is corresponding to 0.1318 mmol of C.

The no. of moles of H₂O produced = mass/molar mass = 1.58 mg/18.0 g/mol = 0.08778 mmol.

which corresponds to (0.08778 x 2) = 0.1756 mmoles of H.

The ratio of the number of moles of hydrogen to carbon in the composition of the compound will be 0.1756/0.1318 = 1.332 = 1 + 1/3 = 4/3.

Therefore, the empirical formula of the compound under consideration is C₃H₄.

The chemical reaction
2 H2O + energy → 2 H2 + O2
is
1. a synthesis reaction.
2. an endothermic reaction.
3. an exothermic reaction.
4. an ionic reaction.

Answers

Endothermic reaction, since energy is basically heat. And endothermic is the absorbance of heat, the energy is on the reactants, so it needs to gather heat to form the reactikn

In the given reaction, the energy has been utilized for the decomposition of the water molecule, hence the reaction has been termed as an endothermic reaction.

The chemical reaction can be distinguished based on the energy released or uptake by the reaction. Or can be differentiated on the basis of the reaction to be constructive or destructive.

The reaction that results in the formation of the new compound has been termed the synthesis reaction.

The reaction that requires energy for the reaction to complete is an endothermic reaction.

The reactions that release energy are termed exothermic reactions.

The ionic reaction results when the ions interact to form the ionic bond.

In the given reaction, the energy has been utilized for the decomposition of the water molecule, hence the reaction has been termed as an endothermic reaction.

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What do scientists do? O A. They use their knowledge to make public policy O B. They make sure all facts fit scientific theories. O C. They make ethical decisions for the government O D. They learn about the world through observation.

Answers

Considering there are different fields of science and many career involving the matter, I'd say that option D. They learn about the world through observation. makes the most sense in this scenario.

I hope this helps! :)

I think the answer to this is D, I am sorry if I’m wrong

The substances below are listed by increasing specific heat capacity value. Starting at 30.0 °C, they each absorb 100 kJ of thermal energy. Which one do you expect to increase in temperature the most? Silver, 0.239 J/(g °C) Aluminum, 0.921 J/(g °C) Lithium, 3.56 J/(g °C) Water, 4.184 J/(g °C)

Answers

Answer:

Silver, 0.239 J/(g °C)

Explanation:

The heat change is related to specific heat as given by the formula;

Heat change = mass of substance × specific heat × change in temperature

Therefore; considering same amount of substance or equal masses and have the same initial temperature.The change in temperature will be inversely proportional to the specific heat. Therefore; the higher the specific heat lower the temperature change.Hence,  the change in temperature will be highest for the substance with the lowest specific heat.

Therefore; the one that will increase in temperature the most is Silver

Answer:

Silver, 0.239 J/(g °C)

Explanation:

Describe two parts of mitosis that are similar to meiosis

Answers

Phases of meiosis II.

Prophase II: Starting cells are the haploid cells made in meiosis I. Chromosomes condense.

Metaphase II: Chromosomes line up at the metaphase plate.

Anaphase II: Sister chromatids separate to opposite ends of the cell.

How many moles of solute do you need to make one liter of a 1.25 mol/L ammonium hydroxide solution

Answers

Answer:

1.25mol of solute

Explanation:

Given parameters:

Volume of solvent = 1liter

Molarity of solution = 1.25mol/L

Solution:

To solve this problem, we use the concept of mole.

Number of moles of solute= molarity x volume of solvent

Number of moles = 1.25 x 1 = 1.25mol

What is 0.045 rounded to the nearest hundredth?

Answers

0.05 is the answer to your question

0.05 would be your answer because when rounding there is one major rule which is look one place to the right for the rounding digit 5. Round up if that number is greater than or equal to 5 and round down if it is less than 5.

Therefor your answer would be 0.05.

* Hopefully this clarify everything and answers your question. Mark me the brainliest:)!!

∞ 234483279c20∞

Which process is shown in the diagram below ?

Metamorphosis
Regulation
Fertilization
Respiration

Answers

The process that is being shown in the diagram below is Fertilization

The process that is being shown in the diagram below is Fertilization

Please do this entire worksheet for me. I will award 59 points!!

Answers

where is the work sheet?

Plz post the worksheet so that I can do it for you. Please don't report this, i am trying to help!

what is a subshell? explain why is it important.

Answers

a subshell is a subdivision of electron shells seperated by electron orbitals

What trend is seen in atom size, going down the periodic table?
A. Atomic radius gets bigger the lower an atom appeares on the periodic table
B. Atomic radius stays the same in a column of the period table
C. Atomic radius varies the lower an atom appears on periodic table.
D. Atomic radius gets smaller the lower an atom appears on the periodic table.

Answers

A, it gets bigger, you can tell by its atomic mass and electron configuration

Answer:

A

Explanation:

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Do you support vegetarianism? Why or why not? Condense the following logs into a single log:[tex]8log_{g} x+5log_{g} y[/tex][tex]8log_{5} x+\frac{3}{4} log_{5} y-5log_{5} z[/tex] Which of the following BEST completes the blank line in diagram above? A. Build strong communities B. Organize events C. Elect representatives D. Create jobs How did the battle of Britain play role in World War II The Fair Use rule of copyright law explains ________.1) when free use of copyrighted material is acceptable 2) when free use of copyrighted material is unacceptable Oraciones Write sentences using the information provided. Use the preterite and make any necessary changes. Modelo Edgar / preferir / pollo asado Edgar prefiri el pollo asado. lvaro y yo / servir / los entremeses quin / repetir / las instrucciones Which best states the authors purpose for including this information in the text? to connect a historical event to the present to bring a person involved in a historical event to life to challenge the readers ideas about a historical event to tell the reader about an important historical event Read the passage from "The Seven Voyages of Sindbad the Sailor.In the times of the Caliph Haroun-al-Raschid there lived in Bagdad a poor porter named Hindbad, who on a very hot day was sent to carry a heavy load from one end of the city to the other. Before he had accomplished half the distance he was so tired that, finding himself in a quiet street where the pavement was sprinkled with rose water, and a cool breeze was blowing, he set his burden upon the ground, and sat down to rest in the shade of a grand house. Very soon he decided that he could not have chosen a pleasanter place; a delicious perfume of aloes wood and pastilles came from the open windows and mingled with the scent of the rose water which steamed up from the hot pavement. Within the palace he heard some music, as of many instruments cunningly played, and the melodious warble of nightingales and other birds, and by this, and the appetising smell of many dainty dishes of which he presently became aware, he judged that feasting and merry making were going on. He wondered who lived in this magnificent house which he had never seen before, the street in which it stood being one which he seldom had occasion to pass.What is Hindbad most motivated by in this passage?A. fatigue and curiosityB. discomfort and peaceC. work and pleasureD. hunger and greed what changes in the parent-child relationship occur when infants become toddlers La es una comida tpica. a. arroz b. frijoles c. paella Choose the correct correspondence AD Options 1.Side AD2.Side AB3.Side CD Which is not a property of magnets? how can you use order numbers that are written as fractions, decimals, and percents? Give an Example plz someone please help me asap! The table shows the growth, in centimeters, of plants in two different soils after two weeks.Which statement explains which soil tended to have a greater growth?Soil A had greater growth because its data have a greater standard deviation.Soil A had greater growth because its data have a greater mean.Soil B had greater growth because its data have a greater interquartile range.Soil B had greater growth because its data have a greater median. In immanuel wallerstein's view, the global economic system is divided between nations that control wealth and nations from which resources are taken. this view is referred to as How do you answer this. Need help ASAP. Offering 20 points !!! The frequency of a wave is the inverse of the wave's _______?periodvelocityamplitudewavelength. Factor the trinomial x^2+8x+7 given the following sets.A = {0, 1, 2, 3} B = {a, b, c, d} C = {0, a, 2, b} find B u Ca. {0, 1, 2, 3}b. {a, b, c, d}c. {0, a, 2, b}d. empty sete. {a, b, c, d, 0, 2} Steam Workshop Downloader