Please choose the best description, or definition of Faunal Succession.

principle stating that specific groups of organisms lived and died within a specific

time frame due to the ice age

principle stating that specific groups of fawns lived in a specific region and are

found in the rocks shoing fawns onl live in specific areas.

principle stating that specific layers of the earth have contain fauna of different

types showing biodiversity.

rinciple stating that specific groups of organisms have followed, or succeeded.

one another in a definite sequence through Earth history

Answer:

Food Processing Plant

Explanation:

The lysosomes contain digestive enzymes that break down large food particles into sugars and other simple substances that can be used more easily as does a food processing plant that processes large quantities of food entering the city into smaller packages that can be used more easily.

Answer:

1M

Explanation:

The molarity of a substance is defined as the number of moles of the substance divided by how many liters the solution is. NaOH has a molar mass of about 40 grams, meaning that 10 grams of it would be 0.25 moles. 0.25/0.25= a molarity of 1.

Hope this helps!

The substrates that will react are CH₃CH₂CH₂Br and CH₃CH₂CH₂CH₂Br  and (CH₃)₃CNH₂ and CH₃CH₂OH will not react with naome in an sn2 reaction to form an appreciable amount of product.

Based on the Sn2 reaction mechanism, substrates with good leaving groups and low steric hindrance are more likely to react with nucleophiles like NaOMe.

Therefore, the substrates CH₃CH₂Br, (CH₃)₂CHBr, CH₃CH₂I, and (CH₃)₃CBr are expected to react with NaOMe to form appreciable amounts of product. On the other hand, substrates with poor leaving groups or high steric hindrance are less likely to undergo Sn2 reactions.

Therefore, the substrates (CH₃)₃CNH₂ and CH₃CH₂OH are not expected to react with NaOMe to form appreciable amounts of product. Finally, CH₃CH₂CH₂Br and CH₃CH₂CH₂CH₂Br may react with NaOMe, but to a lesser extent due to their higher steric hindrance.

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Complete question :

Determine which of the substrates will and will not react with NaOMe in an Sy2 reaction to form an appreciable amount of product. Substrate will react Substrate will NOT react Answer Bank CH,CH.CH,BE (CH),CBE (CH), CHRE CH, CH,CH,NH, (CH),CCH,BE CH,CH.CH, OH

Answer:

0.342 moles

145 moles

0.0239 moles

0.498 moles

Explanation:

To solve this you only need to follow this rule:

N = n x Na. For solving this questions, you just need to divide this values for Avogadro's Coasting, and it's done. Hope it helped!

According to Wegener's hypothesis of continental drift, evidence led from the theory of continental drift the theory of plate tectonics are the distribution of ancient fossils, rocks, and mountain ranges and  perfect fitting of continents.

The theory of continental drift suggests that the Earth's continents were once joined together in a single landmass called Pangaea, which began to break apart around 200 million years ago and has been drifting apart ever since. The theory was first proposed by German geophysicist Alfred Wegener in 1912, but it was not widely accepted until the 1960s when evidence from the ocean floor supported the idea.

Wegener based his theory on several lines of evidence, including the similarities in the shape of the coastlines of continents on opposite sides of the Atlantic Ocean, the distribution of fossils and rock formations on different continents, and the patterns of glaciation during the Earth's history. He suggested that the continents moved apart due to the movement of the Earth's crust, which he called continental drift.

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Answer:

Depending on the deformity it will depend on the amount of the ice that is melted,it the majority is melted that is relevant to the heated liquid melting the ice,so yes only the water formalities of the melted ice.

Answer:

D

Explanation:

Please mark me as brainlyest

Producing hydrogen gas. Hence, option D is correct.

Electrolysis is described by two half-reactions. These half reaction are the oxidation half-reaction and reduction half-reaction.

Electrolysis involves the transfer of electrons. Each half reaction is characterized by the loss or gain of electrons.

The only reason why producing hydrogen gas is not used most of the time is because electrolysis has very low efficiency, most of the energy finishes up being converted to heat and 95% of the hydrogen is produced by steam reforming.

Hence, option D is correct.

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The statement that best describes the main function of the digestive system is to break down and absorb food, option (D) is correct.

When we eat, our food must be broken down into smaller molecules so that our bodies can absorb the nutrients we need for energy, growth, and repair. The digestive system is responsible for this process, which begins in the mouth with chewing and continues through the esophagus, stomach, small intestine, and large intestine.

In addition to breaking down food, the digestive system also plays a role in eliminating waste products from the body. The large intestine absorbs water and electrolytes from undigested food, while the rectum and anus eliminate solid waste from the body, option (D) is correct.

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The complete question is:

Which of the following best describes the main function of the digestive system?

A To provide an external boundary for the body

B To transport oxygen to body cells while removing waste

C To send and receive chemical messages

D To break down and absorb food

Answer:D

Explanation:Each time state transforms into a solid matter thus a physical property is the answer.BRAINLIEST PLEASE

Answer:

a. glucose c. ribose b. adenine d. two phosphate groups user: all organisms need energy to perform different functions. cells are able to ...

The PH value of a saturated solution of phenobarbital is,\(p^H=4.88 \approx P^H \times 4.9$\)

A saturated solution is a chemical solution containing the maximum concentration of a solute dissolved in the solvent. ​The additional solute will not dissolve in a saturated solution.

The amount of solute that can be dissolved in a solvent to form a saturated solution depends on a variety of factors. The most important factors are:

For saturated solution

W= \(1g\), V=\(1000ml\), \(m_{w}\) = \(232.2g\)

Now Molarity = \(\frac{WX1000}{m_{w} V}\) = \(\frac{1X1000}{(23.2)(1000)}\)

Molarity = \(0.0043m\)

Given \(P^{ka}\)=\(7.4\)

Therefore, \(ka =\) antilog \((-7.4)=3.98X10^{-8}\)

\($\left[\mathrm{H}_3 \mathrm{O}^{+}\right]=\sqrt{\mathrm{KaXc}} =\sqrt{3.98 \times 10^{-8} \times 0.0043}=1.30 \times 10^{-5}$ \\Now, $\mathrm{pH}^H=-\log \left(\mathrm{H}_3 \mathrm{O}^{+}\right]=-\log \left(1.30 \times 10^{-\mathrm{E}}\right)=4.88$.\\$\therefore p^H=4.88 \approx P^H \times 4.9$\)

Therefore, the PH value of a saturated solution of phenobarbital is,\(p^H=4.88 \approx P^H \times 4.9$\)

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Answer:

0.065 moles

Explanation:

The iron III solution does not show any reaction with potassium permanganate but iron II solution does show a color change when potassium permanganate is added.

If we look at the image attached, it is clear that is an piece from a laboratory process that is trying to find out the difference between iron II and iron III. The substance that is used to be able to find out this difference is the potassium permanganate solution which is an oxidizing agent.

It is clear that iron III can not react with the potassium permanganate solution since the reaction of iron II with permanganate serves to oxidize it to iron III thus the color of the solution changes from dark green to brown.

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Answer:

Radiation therapy is the use of high energy radiation to kill cancer cells.

Answer:

Radiation Therapy.

Explanation:

Also known as radiotherapy, it uses high-energy radiation to damage and/or kill cancer cells.

Answer:

Hypochlorite

Explanation:

In chemistry, hypochlorite is an anion with the chemical formula ClO⁻. It combines with a number of cations to form hypochlorite salts. Common examples include sodium hypochlorite and calcium hypochlorite. The Cl-O distance in ClO⁻ is 210 pm.

Answer:

Barium hypochlorite

Chemical formula: Ba(ClO)₂

Melting point: 235 °C (455 °F; 508 K) (decomposes)

Solubility in water: reacts

hope this helps

Answer:

a. 0.02 moles  of NH₃, 0 moles of O₂, 0.08 moles of NO, 0.12 moles of H₂O

b. \(P_{NH_3}\) = 12,576.5 Pa, \(P_{NO}\) = 50,306.05 Pa, \(P_{H_2O}\) =  74,459.1 Pa

c. The total pressure is 138,341.64 Pa

Explanation:

a. NH₃ + O₂  → NO + H₂O

The balanced chemical equation is first found to be

4NH₃ + 5O₂  → 4NO + 6H₂O

Therefore, we have;

4 moles of NH₃ reacts with 5 moles of O₂ to form 4 moles of NO and 6 moles H₂O

Dividing by the reactant with the highest number of moles which is 5 moles of oxygen gives;

4/5 moles  of NH₃ reacts with 5/5 moles of O₂ to form 4/5 moles of NO and 6/5 moles H₂O

Which is the same as 4/5 moles  of NH₃ reacts with 1 mole of O₂ to form 4/5 moles of NO and 6/5 moles H₂O

Multiplying by 0.100 gives;

0.1×4/5 moles  of NH₃ reacts with 0.1 mole of O₂ to form 0.1×4/5 moles of NO and 0.1×6/5 moles H₂O

The quantity of each gas in the container upon completion of the reaction is therefore;

(0.1 - 0.1×4/5) = 0.02 moles  of NH₃

0 moles of O₂

0.08 moles of NO

0.12 moles H₂O

b. Given that the temperature = 105°C, we have;

PV = nRT

P = nRT/V

Where:

n = Total number of moles = 0.02 + 0.08 + 0.12 = 0.22 moles

R = Universal gas constant = 8.3145 J/(mol·K)

T = Temperature = 105°C = 378.15 K

V = Volume = 5 litre = 0.005 m³

P = 0.22×8.3145×378.15/0.005 = 138,341.64 Pa

From Dalton's law of partial pressure, we have;

Partial pressure Pₓ = Xₓ × P

Where:

Xₓ = Mole fraction

Which gives for ammonia NH₃ with 0.02 moles;

Mole fraction = 0.02/0.22 = 1/11

\(P_{NH_3}\) = 1/11 × 138,341.64  = 12,576.5 Pa

For the 0.08 moles of NO, we have

Mole fraction = 0.08/0.22 = 4/11

\(P_{NO}\) = 4/11 × 138,341.64  = 50,306.05 Pa

For the 0.12 moles H₂O

P = 0.12×8.3145×378.15/0.005 = 74,459.1 Pa

Mole fraction = 0.12/0.22 = 6/11

\(P_{H_2O}\) = 6/11 × 138,341.64  = 74,459.1 Pa

c. The total pressure = 12,576.5 Pa + 50,306.05 Pa + 74,459.1 Pa = 138,341.64 Pa.

Answer:

chemical, is the answer your looking for

Answer:

what is this?    

Explanation:

The pressure of neon gas, connected to the manometer, is 729.1 torr.

To determine the pressure of the neon gas in the flask, we need to consider the relationship between the pressure difference in the manometer and the difference in the height of the mercury levels in the two arms.

In this case, we have an open-ended mercury manometer, where one arm is connected to the flask of neon gas and the other arm is exposed to the atmosphere. The height difference between the two mercury levels is given as 9.3 cm.

The pressure in the open arm (exposed to the atmosphere) is equal to the atmospheric pressure, which is given as 729 torr. The pressure in the arm connected to the neon gas is what we need to find.

When the two arms of the manometer are at the same height, the pressure in the flask is equal to the atmospheric pressure. However, when one arm is higher than the other, there is a pressure difference.

The pressure difference in a manometer is given by the equation:

ΔP = ρgh

Where ΔP is the pressure difference, ρ is the density of the fluid (in this case, mercury), g is the acceleration due to gravity, and h is the height difference between the two arms.

To find the pressure of the neon gas, we need to rearrange the equation:

ΔP = P_neon - P_atmosphere

P_neon = ΔP + P_atmosphere

Now we can substitute the values into the equation. The density of mercury is approximately 13.6 g/cm³, and the acceleration due to gravity is approximately 9.8 m/s².

Converting the height difference from centimeters to meters:

h = 9.3 cm = 0.093 m

Substituting the values into the equation:

ΔP = (13.6 g/cm³) * (0.093 m) * (9.8 m/s²)

Calculating ΔP:

ΔP = 13.6 g/cm³ * 0.093 m * 9.8 m/s² = 12.395 Pa

Now, we can convert the pressure difference from Pascals to torr:

1 torr = 133.322 Pa

ΔP = 12.395 Pa * (1 torr / 133.322 Pa) = 0.0930 torr

Finally, we can calculate the pressure of the neon gas:

P_neon = ΔP + P_atmosphere = 0.0930 torr + 729 torr = 729.0930 torr

Rounding to the appropriate number of significant figures, the pressure of the neon gas in the flask is 729.1 torr.

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Answer:

d. An organized way to test scientific ideas

Explanation:

Science can be defined as a branch of intellectual and practical study which systematically observe a body of fact in relation to the structure and behavior of non-living and living organisms (animals, plants and humans) in the natural world through experiments.

An experiment can be defined as an investigation which typically involves the process of manipulating an independent variable (the cause) in order to be able to determine or measure the dependent variable (the effect).

This ultimately implies that, an experiment can be used by scientists to show or demonstrate how a condition causes or gives rise to another i.e cause and effect, influence, behavior, etc in a sample.

A scientific method can be defined as a research method that typically involves the use of experimental and mathematical techniques which comprises of a series of steps such as systematic observation, measurement, and analysis to formulate, test and modify a hypothesis.

A hypothesis is considered to be tentative or an educated guess and can be defined as a testable explanation for an observation or a scientific problem. An example of a hypothesis is saying, Corona virus is caused by the introduction of the "5G" technology.

Thus, for any hypothesis to be true and acceptable in science, it must be supported by observations and the results of control experiments; this give rise to factual informations, theories and by extension solutions to problems.

In conclusion, we can deduce from the aforementioned paragraphs that a scientific method is simply an organized way to test scientific ideas and hypothesis.

Acetic acid will neutralize the addition of a strong base in an acetic acid/acetate buffer system.

In an acetic acid/acetate buffer system, the main purpose is to resist changes in pH when small amounts of acid or base are added. When a strong base is added, it increases the concentration of hydroxide ions (OH-) in the solution, which can shift the pH towards the basic side.

To neutralize the added strong base and maintain the buffer system, acetic acid (CH3COOH) acts as the main keyword. Acetic acid, being a weak acid, can react with the hydroxide ions (OH-) to form water (H2O) and acetate ions (CH3COO-). This reaction helps in counteracting the increase in hydroxide ions, thereby stabilizing the pH of the buffer system.

Water (H2O), acetate ions (CH3COO-), and hydronium ions (H3O+) are already present in the buffer system and do not actively neutralize the strong base. It is the addition of acetic acid that replenishes the buffer's acid component and maintains its pH buffering capacity.

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Answer:

b. a meadow replacing a pond in it's flood plain

Explanation:

I'ts a secondary succession.

Answer:

Probably because there is more helium to burn. After billions of years there's only gonna be helium so no more of that firey energy.

I think....

\(\\ \tt\hookrightarrow Density=\dfrac{Mass}{Volume}\)

\(\\ \tt\hookrightarrow Volume=\dfrac{Mass}{Density}\)

\(\\ \tt\hookrightarrow Volume\propto \dfrac{1}{Density}\)

Snow with density 0.25g/ml has more volume

The volume of snow with a density of  0.5 g/mL will have more water than the snow with a density of 0.25 g/mL.

Density is the mass per unit volume. Density can be calculated by knowing the mass and volume of the object. Volume is the space occupied by an object.

Let's take the volume to be 100

The densities are 0.5 g/mL and 0.25 g/mL

so, volume = mass / 0.5 g/ml

mass = 100 x 0.5 = 50

Second density =  0.25 g/mL

volume = mass / 0.25 g/ml

Mass = 100 x 0.25 = 25.

The mass is directly proportional to the density. So, if the mass has increased the density is also increased, so the volume of snow with a density of  0.5 g/mL will have more water than the snow with a density of 0.25 g/mL.

Thus, more water will be present in the amount of snow with a density of 0.5 g/mL than the snow with a density of 0.25 g/mL.

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The places where the edges of the earth plates meet is called ;

The earth plates are made up of the earth's crust and the upper part of the Earth's mantle which are generally referred to as the Earth's lithosphere.

The Tectonic plates can be convergent, divergent or simply slide pass each other. The fault line is a crack on the earth crust due to movement of the plates, therefore at this point the edges of the earth plates meets each other due to the relative movement of the plates.

Hence we can conclude that the places where the edges of the earth plates meet are called fault lines of the earth.

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Answer: Your question doesen't make since and you should word it better but what I think you are asking is...

The ___ of a bomb calorimete is constant, what is the temperatue, pressure and volume of it?

Explanation: GL to the next person who tries to answer this.

the theoretical yield of sodium chloride when 36.0 g Na reacts with 75.2 g Cl2  is 91.5g of NaCl.

Molar mass of Na= 22.99

Molar mass of Cl= 35.45

So we have 36/22.99 moles of sodium and 75.3/35.45 moles of chlorine which makes 1.566 moles of Sodium and 2.124 moles of Chlorine. To form sodium chloride, one atom of sodium reacts with one atom of chlorine, so 1.566 moles of sodium will react with 1.566 moles of chlorine. Excess chlorine is 2.124 - 1.566 moles or 0.558 moles. Therefore, all 1.566 moles or 36 grams of sodium will react with 1.566 times 35.45 grams of chlorine or 55.515 to produce 91.51 grams of NaCl.

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