In the Forest Ecosystem Gizmo that was part of this OMS lesson, how did removing bears affect the deer population?

During the first 20 years, the population of deer decreased.

During the first 20 years, the population of deer stayed the same

During the first 20 years, the population of deer increased.

During the first 20 years, the population of deer changed drastically each year

The correct statement about the population shown in this graph is

The population is not continuing to grow because it has reached its carrying capacity.

Population typically refers to the number of people in a single area, whether it be a city or town, region, country, continent, or the world.

The carrying capacity of an environment is described as the maximum population size of a biological species that can be sustained by that specific environment, given the food, habitat, water, and other resources available.

The purpose of Carrying capacity is that it is a concept for biologists when trying to better understand biological populations and the factors that affect them.

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To name ions from radicals, first identify the charge of the ion by counting the number of protons and electrons.

What do you mean ions?

Ions are atoms or molecules that have gained or lost one or more electrons and thus have a net electric charge. They are formed when an atom gains or loses electrons in a chemical reaction. Examples of common ions include sodium (Na+), chloride (Cl-), calcium (Ca2+), and magnesium (Mg2+).

Then determine the name of the ion based on its charge. For example, if the ion has a positive charge, it is called a cation; if it has a negative charge, it is called an anion. Finally, name the ion using the element's name and its charge. For example, a radical with two protons and one electron would be a cation and would be named “Hydrogen ion”.

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Answer: 32g of oxygen and 4g of hydrogen were reacted in total.

Explanation:

To find out how many grams of reactants were reacted, we need to use the balanced equation of the reaction. The equation for the reaction between hydrogen and oxygen to produce hydrogen peroxide is:

2H2 + O2 --> 2H2O2

From the equation, we know that the reaction involves 2 moles of hydrogen and 1 mole of oxygen. We can use the balanced equation to determine the stoichiometry of the reaction, which tells us the relative number of moles of each reactant and product.

We know that 32g of oxygen was reacted, and since 1 mole of oxygen is equal to 16g, we can calculate the number of moles of oxygen by:

32g / 16g = 2 moles

We know that 2 moles of hydrogen are required for every mole of oxygen. so the number of moles of hydrogen is also 2 moles.

We know that 1 mole of hydrogen is equal to 2g, so we can calculate the number of grams of hydrogen by:

2 moles x 2g = 4g

Therefore, 32g of oxygen and 4g of hydrogen were reacted in total.

Below is a list of the temperature change solution.

The source of the temperature change is

Initial Temperature - Final Temperature

Temperature measurements

It is a gauge for determining how hot or chilly a body is.

To quantify temperature variations,

The water and iron's beginning and final temperatures are noted.

To Iron

Iron that has been heated up is submerged in water.

Water is at a lower temperature, so both of the temperatures will change.

These information is saved.

Final temperature minus initial temperature equals temperature change.

a) The difference in temperature for metal is 200 - 100 = 100 0C

Water temperature change = 22.5

Change in temperature for both = 23.3

b) 0.7 for water

Metal 76.6 for iron

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Complete Question -

Put the Metal in the Water and Measure

Temperature Changes (Lead)

Measure the initial temperature of the water to the

nearest 0.1°C. Record in the data table.

Initial temperature of metal =

Initial temperature of water

Final temperature of both = [

27

DONE

26

25

24

23

Intro

Continue

AL

250 ml

=பா-©

200

150

100

1

27

O

°C

°C

When burning magnesium is lowered in a gas jar full of carbon dioxide, the burning process continues because the carbon dioxide acts as an oxidizing agent.

A combustion reaction is a type of chemical reaction that occurs when a fuel, such as a hydrocarbon, reacts with an oxidizing agent, such as oxygen, to produce heat and light in the form of a flame. The basic equation for a combustion reaction is:

Fuel + Oxidant → Heat + Light + Products

In the case of burning magnesium, the fuel is magnesium and the oxidant is carbon dioxide. The products of the reaction are magnesium oxide and carbon dioxide. Combustion reactions are exothermic, meaning they release energy in the form of heat.

This means that the carbon dioxide provides the oxygen necessary for the combustion reaction to continue, allowing the magnesium to continue burning. Additionally, the carbon dioxide also helps to extinguish the flame by removing the heat and the oxygen from the combustion zone.

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Iron hydroxide is the compound that gives off some gold sparks in a flame test and the chemical formula of the compound is Fe(OH)₃.

Compound is defined as a chemical substance made up of identical molecules containing atoms from more than one type of chemical element.

Molecule consisting atoms of only one element is not called compound.It is transformed into new substances during chemical reactions. There are four major types of compounds depending on chemical bonding present in them.They are:

1)Molecular compounds where in atoms are joined by covalent bonds.

2) ionic compounds where atoms are joined by ionic bond.

3)Inter-metallic compounds where atoms are held by metallic bonds

4) co-ordination complexes where atoms are held by co-ordinate bonds.

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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:

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

Explanation:

:)

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.

As per the balanced reaction, 3 moles or 6 g of hydrogen gas produces 2 moles or 34 g of ammonia. Then, 6.5 g of hydrogen produces 36.8 g of ammonia.

Ammonia is a covalent compound formed from the nitrogen atom and three hydrogen atoms. The process of manufacturing of ammonia is called Haber process.

As per the balanced reaction, 3 moles or 6 g of hydrogen gas produces 2 moles or 34 g of ammonia. Then, 6.5 g of hydrogen produces 36.8 g of ammonia.

The mass of ammonia produced from 6.5 g of hydrogen is calculated as follows:

mass of ammonia   = (6.5 × 34 g) / 6 g = 36.8 g

Therefore, the mass of ammonia produced from 6.5 g of hydrogen gas is 36.8 g.

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Answer: 509.8 g

Explanation:

5 moles Al₂O₃

Al: 2 x 26.98 g = 53.96 g

O: 3 x 16.00 g = 48.00 g

Total grams = 101.96 g

1 mole of Al₂O₃ = 101.96 g

5 mol Al₂O₃ x (101.96 g Al₂O₃/1 mol Al₂O₃) = 509.8 g Al₂O₃

Note that moles of Al₂O₃ cancel and you are left with grams, which is what you want.

(2,0), This point is on the new line because it can be represented by the equation y=2x, which is the equation of the new line.

An equation is a mathematical statement that expresses the equality of two expressions. It establishes a relationship between the two expressions and shows that they are the same. An equation can contain any number of variables, ranging from zero to infinity. It can be used to solve problems involving unknown values, using a set of algebraic operations such as addition, subtraction, multiplication, division, and exponentiation. Equations can also be used to represent relationships between physical quantities, allowing us to understand how one quantity changes in relation to another. Equations are used in many fields, from engineering and science to economics and finance.

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To solve this we must be knowing each and every concept related to environment. Therefore, the correct option is option B among all the given options.

An environment may be simply defined as a system that includes all abiotic and biotic components that have an impact on human life. All flora and animals are considered biotic, or living, elements, whereas water, sunshine, air, temperature, etc. are considered abiotic.

Any good, service, or feature that benefits people and society might be considered one of an environment's resources. They might be anything that fulfills a person's requirements on a daily basis. Amount of oxygen in the water is a biotic factor of an aquarium environment.

Therefore, the correct option is option B.

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Answer: B: Water Temperature

Explanation: k12 test 1.04 Science Life semester 2

Density is an intensive property as it does not depend on the quantity of the substances Whereas mass and volume are extensive property. Therefore, the volume of solid is 9.8L.

Density tells about the compactness of the substances, how much dense is the substances in other words. Object that is more denser than water they just sink in the water.

Mathematically,

Density of solid = Mass of solid ÷volume marked on the graduated cylinder

mass of solid =24.5 g

density of solid =2.50 g/mL

substituting all the given values in the above equation, we get

2.50 g/mL= 24.5 g/ volume of solid

volume of solid= 9.8L

Therefore, the volume of solid is 9.8L.

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According to the question, 0.55 lb many pounds of gold were in the sample of heat to melt it from room temperature.

What is heat?
Heat is the transfer of energy from one object to another due to the temperature difference between them. Heat is the form of energy that is transferred between two objects with different temperatures. Heat moves from the object with the higher temperature to the object with the lower temperature. Heat is also created when an object does work, such as friction or compression. Heat transfer can happen through conduction, convection, and radiation. Conduction occurs when two objects of different temperatures are in direct contact with each other.  

The specific heat of gold is 0.128 J/g°C.

3.25 x 104 J = (3.25 x 104 J) / (0.128 J/g°C x 841.2°C)

= 2.5 x 103 g

2.5 x 103 g = (2.5 x 103 g) / (453.6 g/lb)

= 0.55 lb of gold

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The total number of moles of electrons lost by Mg(s) when 2.0 moles of electrons are gained by Ni2+(ag) is also 2.0 moles of electrons.

This is because in a chemical equation, the number of moles of electrons gained by the reducing agent (in this case Ni2+) is equal to the number of moles of electrons lost by the oxidizing agent (in this case Mg(s)).

In this redox reaction, Mg is being oxidized because it loses electrons and Ni is being reduced because it gains electrons. The oxidation and reduction process are occurring simultaneously, so the number of electrons lost by Mg(s) is equal to the number of electrons gained by Ni2+(ag).

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The electrons that are gained by the [tex]Ni^{2+}[/tex] ion is 2.0 moles of electrons.

We know that when there is a redox reaction, there would be the loss or gain of electrons in the process. The process is a simultaneous one so the electrons that are lost by one specie must as a matter of necessity be gained by another specie.

In this case, as we look at the reaction equation we can see that there are two electrons that have been lost by the magnesium atom and these two electrons would be gained by the Nickel II ion.

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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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Answer:

Explanation:

a

The thermochemical equation of the reaction is CO (g) + 3H₂ (g) ⇒ CH₄ + H₂O. 48 KJ heat will be released during this reaction if 67.2 liters of methane.

A balanced stoichiometric chemical equation that includes the enthalpy change i.e, ΔH is called as thermochemical equation.

At STP,

1 mole of any gas occupies a volume of 22.4 L.

The volume of 67.2 L corresponds to  67.2 / 22.

= 3  moles.

1 mole of CO₂ obtained from 1 mole of methane.

3 moles of CH₄ will be obtained from 3 moles of CO₂.

The molar mass of methane = 16 g/mol.

Then, the mass of 3 moles of methane = 3 × 16

= 48 KJ

Thus,The thermochemical equation of the reaction is CO (g) + 3H₂ (g) ⇒ CH₄ + H₂O. 48 KJ heat will be released during this reaction if 67.2 liters of methane.

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Answer:

"Initiate"

1. To put into effect; bring into use.
• begin

• commence

• create

• launch

2. To take in as a member.

• admit

• pledge

• recruit

• welcome

Byron's goal had always been to compete in the Olympics as a runner. He had told all his family and friends, and he was dedicated to his dream: Byron's goal was to run in the Olympics.

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Answer: 22.6g H2

Explanation:

You need to set up dimensional analysis starting with 11.2moles of H2O (the same as HOH).

First, you need to balance the equation. When balanced, it is:

2H2(g) + O2(g) --> 2H2O(g)

Starting with moles of H2O, you need to go from moles of H2O to moles of H2. To do so, you need to use the mole ratio that you can figure out from the balanced equation. In this case it will be 2mol H2/2mol H2O.

Then just convert to grams using the molar mass of H2 which is 2.016grams.

11.2 mol H2O x (2 mol H2 / 2 mol H2O) x (2.016g H2 / 1 mol H2) = 22.6g H2

When that equation is set up, all units except for grams of H2 will cancel and you'll be able to multiply across.

Answer: 0.0023mol

Explanation:

Molar Mass of Water is 18.01g/mol

0.041g H2O*(mol/18.01g) = 0.0023mol

Answer:

similar as they both have valency of 1

different as sodium is metal while chlorine is non metal

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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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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The density of the the wire is given 8.92 g/cm³. The mass is 0.200 cm. Thus, length of the copper wire will be 55.7 cm.

Density of a substance is the measure of its mass per unit volume. It describes how closely its particles are packed within a given volume. It is the ratio of mass to the volume.

Volume of an object is the space occupied by the object. For a rectangle block, volume is the product of length, width and height.

volume of wire  = πr²l

diameter = 0.200 cm

radius = 0.1 cm

volume =  3.14 × (0.1)² l = 0.0314 l

where l is the length of the wire.

Mass of the wire = 15.62 g

density = mass/ volume

d = 15.62 g/ 0.0314 l cm³

  =  8.92 g/cm³

Then, l = 55.7 cm.

Therefore, the length of the copper wire  is 55.7 cm.

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18.72 moles of oxygen are needed to combust 3.12 moles of glucose.

Glucose is a type of sugar that can be represented by the chemical formula C6H12O6.

When glucose is burned in the human body, it combines with oxygen to form carbon dioxide (CO2) and water (H2O) as waste products.

The balanced equation for the combustion of glucose is:

C6H12O6 + 6O2 -> 6CO2 + 6H2O

From the equation, we can see that for every 1 mole of glucose, 6 moles of oxygen are needed.

To calculate the number of moles of oxygen needed to combust 3.12 moles of glucose, we can use this relationship;-

3.12 moles of glucose * 6 moles of O2/1 mole of glucose = 18.72 moles of O2

So, 18.72 moles of oxygen are needed to combust 3.12 moles of glucose.

The number of mole in 68 grams of sulphur dioxide, SO₂ is 1.06 mole

The number of mole of a substance is defined by the following formula:

Mole = mass / molar mass

Using the above fromula, we can obtain the number of mole in 68 grams of sulphur dioxide, SO₂. This is shown below:

Mole = mass / molar mass

Number of mole of SO₂ = 68 / 64

Number of mole of SO₂ = 1.06 mole

Thus, we can conclude that the number of mole is 1.06 mole

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Answer: Potassium bromide, KBr

Explanation:

Potassium gives a lilac flame in flame test and Bromide ions produce a cream precipitate when they react with Silver ions to form Silver bromide