3. Record your observations for each simulation test trial in the tables below and write 3-4 sentences describing your observations.
(Hint: Simulation is in lesson 1.16)
Choose a different starting number of carnivores, herbivores, and producers for each trial you conduct.

Table 1: Test Trial 1
Organisms in Simulation Start (number you added of each) End (number you ended with)
Carnivore
Herbivore
Producer

Table 2: Test Trial 2
Organisms in Simulation Start (number you added of each) End (number you ended with)
Carnivore
Herbivore
Producer

Table 3: Test Trial 3
Organisms in Simulation Start (number you added of each) End (number you ended with)
Carnivore
Herbivore
Producer

Write 3-4 sentences describing your observations in the three tables above.




4. What conclusions can you draw about how resource availability affects populations of organisms in an ecosystem? Write an evidence-based claim. (Hint: This means you state whether your hypothesis/prediction is correct or incorrect. You then need to provide evidence from your observation tables to support your claim of it being correct/incorrect.)

The amount of carbon dioxide produced by the reaction of 8 grams of oxygen with an excess of carbon monoxide is 16 grams.

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The pressure of hydrogen gas formed in mmHg is 633.5mmHg.

Pressure of hydrogen gas = total pressure - vapor pressure of water

Vapor pressure of water at 19°C = 16.5 mmHg

Hydrogen gas pressure = 650.0mmHg to 16.5mmHg = 633.5mmHg

Pressure is the magnitude of a strong pushing force. In Physics, pressure is a popular material whose phenomena we can easily find.

Pressure is the magnitude of the force acting on each unit surface area. The emergence of the pressure phenomenon is the result of a push on an object in a perpendicular direction.

A simple example of the pressure phenomenon is when we stand with two feet pressing against the ground. The push from our feet produces pressure that keeps balance awake.

Pressure is not only related to force but also to area, volume, and temperature. In addition, we can know the factors that affect the amount of pressure based on the type of substance itself.

The international unit for pressure is the newton per unit area (N/m2), while the symbol for pressure is P or p. In addition, another unit of measurement for pressure is Pascal (Pa), which is the last name of the French physicist, Blaise Pascal.

Then it can be stated that 1 N/m2 = 1 Pa

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Answer:

What process formed this delta?

A.) erosion and deposition

Explanation:

You're welcome.

Answer:

Erosion and deposition

Explanation:

Erosion happens as a result of the washing away of the top soil and this usually goes along with the deposition of some particles; loose or fine, mainly sand. So yes, the answer is option a.

Answer:

1. ion

2. loses

3. gains/adds

Explanation:

An ion is an atom or group of atoms that has an electric charge. Ions with a positive charge are called cations. Ions with a negative charge are called anions.

When an atom is in neutral state, the number of protons = number of electrons

if an atom loses an electron, now electron count is less than the protons. (electrons < protons), hence it will be more positive.

if an atom gains or adds an electron, now electron count is more than the protons. (electrons > protons), hence it will be more negative.

Gold (atomic mass=197) is plated from a solution clauric acid H4UCl4, It deposits on the cathode. The time to deposit 0.50g of gold passing a current of 0.10 is 2.4 hour.

The movement of electrons through a wire is referred to as electric current. The number of charges that move through the wire per second is measured in amperes (amps).

One mole of gold require 3 mole electron

Mass of gold deposited = 0.50g

Molar mass of gold = 197g

No of mole of gold = 0.50g/197g

= 0.0025

No of electron required = 3 × 0.0025

= 0.0076

1mole of electron having the charge of 96485C

Therefore, Columns for 0.0076 mole of electron = 940.43C

0.1 A current means 0.1 Columbs per second

Therefore, time to deposit 0.50g of gold = 940.44/0.1

= 9404.4second

= 2.4 hour

Thus, the time to deposit 0.50g of gold passing a current of 0.10 is 2.4 hour.

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For the given reaction, increasing the volume of the reaction system will shift the equilibrium to forward reaction. Decreasing the pressure will shift the equilibrium to the reverse direction.

The state of a reaction at which, the back ward and forward reaction takes place in equal rates is called equilibrium state. According to Le -Chatlier's principal, if any disorder imbalance the system, the system will balance it and shift to a new equilibrium state.

When the volume of reactants is increased, the reaction changes to the forward direction in which the increased volume is decreased.  Hence, as the volume increases, forward reaction takes place.

When the pressure is decreased, the reaction will shift to the direction in which the number of moles of gas is increasing to increase the pressure. Here, the reactant side haves the 4 moles of gases and product side have 2 moles of gas.

Hence, decrease in temperature make a shift to the reverse reaction.

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The rate of a reaction is affected by several factors such as concentration, temperature, etc. except the magnitude of equilibrium constant. It is the Chemical kinetics that deals with the study of rate of reactions.

The rate of decrease in the amount of the reactants or the rate of increase in the amount of products is generally known as the rate of a reaction. It is usually expressed in the unit mol L⁻¹ s⁻¹.

The rate of a reaction is influenced by many factors like reactant concentration, temperature, presence of catalyst, intensity of radiations, etc.

In general, the increase in the concentration of the reactant, increase in the temperature of the system and the presence of a catalysts increases the rate of the reaction.

There is no relationship between the equilibrium constant and the rate of the reaction. The rate equation is given as:

Rate = k [ Reactant]ⁿ

Here k is the rate constant not the equilibrium constant.

The extent to which the reactants are changed into the products is given by the magnitude of equilibrium constant. It does not affect the rate of a reaction.

Thus the rate of a reaction is affected by all except magnitude of equilibrium constant.

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Mountains can evolve in a variety of ways over time. They are susceptible to erosion from rain and wind, as well as landslides caused by flooding. Volcanic activity causes some mountains to change. They may also change as a result of earthquakes and tectonic plate movement.

A volcanic eruption occurs when lava and gas are expelled from a volcano, sometimes violently. A 'glowing avalanche,' which occurs when freshly erupted magma flows down the sides of a volcano, is the most dangerous type of eruption.

The heat from the mantle plume melts and thins the crust, resulting in surface volcanic activity.

Thus, In figure 3 there are two images one is millions of years ago and another is present day image. In both the images mountains are different because of erosion from rain and wind, as well as landslides caused by flooding.

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We can write down the electron configuration of bromine using the periodic table's building pieces.

The amount of electrons in each sublevel and energy level of the ground-state atom is displayed in the electron configuration of an atom. Start at the nucleus and add electrons one at a time until the total number of electrons equals the total number of protons in the nucleus to establish the electron configuration of a specific atom.

The lowest energy sublevel is awarded to each additional electron. The 1s sublevel will be the first to be filled, followed by the 2s and 2p sublevels, the 3s and 3p, the 4s and 3d, and so on. It may be crucial to understand how the electrons in an atom's partially filled sublevel are allocated throughout the orbitals.

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The energy value of olive oil is 42.37 kJ/g. The enthalpy from the olive oil is 52.198 kJ/mol.

The question isn't complete. A similar question is in the attachment. A calorimeter is a tool that use to measure heat energy according to the equation

Q = m × c × ΔT

The heat energy that release

Q = m × c × ΔT

Q = 390 × 4.184 × 14.8

Q = 24,150.048 J

Q = (24,150.048 ÷ 1,000) kJ

Q = 24.15 kJ

The energy value is the ratio between the heat energy and the mass. For this problem

The formula to calculate the enthalpy ΔH = Q ÷ n

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The volume in liters of 3.14 kg of ethylene glycol is 2.8288 L

A measurement of three-dimensional space is volume. It is frequently quantified numerically by various imperial or US customary units, SI-derived units, or both.

To find the volume:

Ethylene glycol density is: 1.11 g/cm³

m= 3.14 kg = 3140 g

v= ? L

v= m/d

= 3140g/1.11 g/cm³

=2828.8 cm³

= 2.8288 L

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The number of moles in 2.07 × 10²³ formula units of CaCl₂ is 0.34 moles.

The term mole is defined as the amount of substance of a system which contains as many elementary entities.

One mole of any substance is equal to 6.023 × 10²³ units of that substance such as atoms, molecules, or ions. The number 6.023 × 10²³ is called as Avogadro's number or Avogadro's constant.

The mole concept can be used to convert between mass and number of particles.

1 mole of any molecule = 6.023 × 10²³ molecules

1 mole of CaCl2 = 6.023 × 10²³ molecules

Therefore,

2.07 × 10²³ molecules of CaCl2 1 mole / 6.023 × 10²³

= 0.34 moles

Thus, the number of moles in 2.07 × 10²³ formula units of CaCl₂ is 0.34 moles.

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An investigative question that you can answer by doing these experiments is: what type of change is not easily reversible and which is reversible

The two types of changes are given below:

Physical changes are changes that are easily reversible and which do not result in the formation of new substances. Examples of physical change include the melting of ice, the freezing of water, and the dissolution of sugar in water.

Chemical changes are changes that are not easily reversible and which result in the formation of new substances. Examples of chemical changes are rusting of iron, burning of wood, etc.

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Using the van der Waal equation, the pressure exerted by 15.0 mol of carbon dioxide confined to a 3.00 L vessel at 56.0 C is 81.95 atm.

The van der Waals equation is given below as follows:

(P + a * n²/V²) (V - nb) = nRT

where:

P is pressure = ?

a = 3.59 L².atm/mol

b = 0.0427 L/mol.

V is volume = 3.00 L

n is the number of moles = 15.00 moles

R is molar gas constant = 0.0821 Latm/mol/K

T is the temperature in kelvin = (273 + 56) or 329 K

Substituting the values:

(P + 3.59 * 15²/3²) (3 - 15 * 0.0427) = 15 * 0.0821 * 329

(P + 89.75) = 171.7

P = 81.95 atm

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If the small amount of MnS is combined with the large amount of HCl, The mass of any excess reactants will also be included in this total is the mass of the beaker with the small amount of MnS(s) and HCl(aq) after reaction is 504.35g.

A balanced chemical equation is one that has the same number of atoms of each type in the reaction on both the reactant and product sides. In a balanced chemical equation, both the mass and the change are equal.

The balance chemical equation is as follows:

MnS(s) + 2HCl(aq) ⟶ MnCl₂(aq) + H₂S(g)

Thus, The mass of any excess reactants will also be included in this total the mass of the beaker with the small amount of MnS(s) and HCl(aq) after reaction is 504.35g.

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Answer:

40.0L

Explanation:

The number of atoms in 29.0grams of sodium, Na is 7.58 × 10²³ atoms.

The number of atoms of a substance can be calculated by multiplying the number of moles in the substance by Avogadro's number; 6.02 × 10²³.

no of atoms = no of moles × 6.02 × 10²³

According to this question, there are 29.0 grams of sodium (Na). The number of moles can be calculated as follows:

moles = 29.0g ÷ 22.99g/mol = 1.26mol

No of atoms = 1.26 mol × 6.02 × 10²³

no of atoms = 7.58 × 10²³ atoms

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Answer:

The chalcogens are the elements that belong to group 16 of the modern periodic table (or the oxygen family). Chalcogens consist of five elements – oxygen, sulfur, selenium, tellurium, and polonium.

The chalcogens (ore forming) are the chemical elements in group 16 of the periodic table. This group is also known as the oxygen family. Group 16 consists of the elements oxygen (O), sulfur (S), selenium (Se), tellurium (Te), and the radioactive elements polonium (Po) and livermorium (Lv).Explanation:

The reaction is correct since the -NHCH3 moiety protonated leading to the hydrolysis of the amine . Option D

We know that when we talk about hydrolysis, what we ,mean is the fact that there is a compound that is broken up. The breaking up of the compound would lead to the folrmation of the products of the reaction.

In the case of what we have here. We can see that when we react the acid with the amide the point of attack is the -NHCH3 and this would cause it to break off from the amide and then the products are formed.

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H-F is a dipole molecule.

H-F is a polar covalent molecule that exhibits dipole-dipole interactions. Because it contains an electronegative atom, F, which is bonded to a H atom, an H-bond exists between its molecules. Because of these H-bonds, -HF molecules exist in liquid form.

Because HF is a polar molecule, it exhibits both dispersion and dipole-dipole forces. However, hydrogen bonding is possible because a hydrogen atom is covalently bonded to a fluorine atom and the same hydrogen atom interacts with a fluorine atom on another HF molecule.

A polar bond exists between H and F. All other molecules have regular geometry and, as a result, have a zero dipole moment.

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3.32 × 10-⁵grams is equivalent to 33.2 micrograms.

Grams is a unit of mass equal to one-thousandth of a kilogram with a symbol of g.

Micrograms is unit of mass equal to one millionth of a gram, or 0.000 001 grams with a symbol of μg or mcg.

According to this question, we were given 3.32 × 10-⁵ micrograms. The conversion factor is as follows:

1 gram = 1000000 (1 × 10⁶) micrograms

Hence, 3.32 × 10-⁵ grams is equivalent to 33.2 micrograms.

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The percent by mass of the nitrogen is  82.4%.

We have to note that the percent by mass can be obtained when we know the molar mass of the compound and that is the first thing that we would need to find in the problem that we have in the question that have been asked.

The molar mass of the compound is; 14 + 3(1) = 17 g/mol

The percent by mass = Mass of N/ molar mass * 100/1

= 14/17 * 100/1

= 82.4%

The nitrogen would have a percent by mass in the compound of about  82.4%

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Due to the fact that this is a generally used (unit)3, such as cubic centimeters, cubic inches, cubic feet, cubic meters, etc., volume is computed for three-dimensional objects and is therefore represented in cubic units or another format of writing cubic unit.

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The total number of cation is 1 and the total number of anion is 1.

The positively charged particles are called as cation and the negatively charged particles are called as anions.

The number of atoms present in unit cell at corner are 4 red ( B cation ) 4 Blue (A cations)

Total number of cations at the corner = 8

1 atom at corner have 1/8th of its portion

8 atom have 1/8th × 8 atom = 1 atom

Number of cation = 1

Atoms at the edge contributes ¼ th portion

There are 4 anions at edges

Contribution from 4 anions

= 1 / 4 × 4

= 1

Total anions = 1

Total cations = 1

Thus, the total number of cation is 1 and the total number of anion is 1.

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The statement given above is true.

Use only synthetic fiber swabs that have tiny wire or plastic shafts and were created specifically for sampling nasopharyngeal mucosa. Avoid using swabs made of calcium alginate or those with wooden shafts since they may contain chemicals that render some viruses inactive and thwart molecular testing. Although an OP specimen is a valid specimen type, the CDC advises only collecting the NP specimen. To increase test sensitivity and reduce the usage of testing resources, merge both NP and OP specimens into a single tube if they are obtained.

Maintain proper infection control and use the recommended personal protective equipment (PPE), which includes an N95 or higher-level respirator (or face mask if a respirator is not available), eye protection, gloves, and a gown, for healthcare professionals taking samples from patients or working within 6 feet of patients suspected of having the SARS-CoV-2 virus.

Follow standard precautions for healthcare professionals handling specimens who are not actively involved in the collection (such as handling self-collected specimens) or who are not working within 6 feet of the patient. Whenever they are within a healthcare institution, healthcare personnel should always wear some sort of source protection, such as a face mask.

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Insulation is the process of constructing a barrier between hot and cold objects that prevents heat from transferring between them by either reflecting thermal radiation or reducing conduction and convection.

What reduces thermal energy transfer?

The prevention of heat transfer between surfaces that are in thermal contact or within a radiative influence zone is known as thermal insulation. In addition to using the right item forms and materials, specially engineered technologies or processes can also be used to provide thermal insulation.

Thermal insulation prevents heat from moving from one substance to another when they are in thermal contact.

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Answer:

False

Explanation:

 In a chemical reaction, only the atoms present in the reactants can end up in the products.

No new atoms are created, and no atoms are destroyed.

In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.

Enthalpy is the energy that travel through one object to the other when temperatures are different. Therefore, 31.4°C is the final temperature.

Enthalpy is the energy that travel through one object to the other when temperatures are different. Enthalpy passes from the hot to the cold object when two object  with different  temperatures are brought closer.

From one state to another, such as from solid to liquid, from such a solid to a vapour, from either a liquid to a vapour, either from one solid form to another, a substance can absorb enthalpy without increase in temperature.

q=m ×c×ΔT=m ×c×(T −Ti)

q=-m×c×ΔT= -75 ×4.18(T−95°C)

q=m×c×ΔT=150×4.18(T− 25°C )

-75 ×4.18(T−95°C) =150×4.18(T− 25°C )

final temperature=31.4°C

Therefore, 31.4°C is the final temperature.

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