How does a coyote producer consumer decomposer

This conclusion is wrong; because the covalent molecules do not conduct electricity.

A covalent bond is created when one or more pairs of electrons are exchanged between two atoms. The two atomic nuclei are drawing these electrons in unison. A covalent bond is created when there is not enough room between the electronegativities of two atoms for an electron transfer to occur and produce ions.

The atoms associate in a covalent bond by exchanging electrons. Typically, nonmetals form covalent connections with one another. For instance, each hydrogen (H) and oxygen (O) share two electrons to form the molecule of two hydrogen atoms singly linked to one oxygen atom that is known as water (H₂O).

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The presence of partial charges in a liquid enables the liquid to split the bonds of the salt when dissolved in it. On the other hand, in the absence of partial charges, the liquid won't be able to break bonds apart and dissolve salts in it.

How a liquid dissolves things?

In a liquid such as water the charges are arranged in a such a way that generates partial positive and negative sides on hydrogen and oxygen atoms giving rise to polarity.

So when a substance such as salt is dissolved in water, the partial positive charge attracts the negative side of the salt with a definite force while partial negative charge of liquid pulls the positive charges apart.

In general, the partial charges of the liquid pull apart the charges of the added substance which results in breaking their chemical bonds and dissolving them.

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The following chlorides are ionic or covalent:

SiCl₄ = covalent

PCl₃ = covalent

CaCl₂ = ionic

CsCl = ionic

CuCl₂ = ionic

CrCl₃ = ionic

SiCl₄ is silicon tetrachloride. SiCl₄ is a covalent. The bond between silicon and chlorine is formed by the sharing of electrons.

PCl₃ is Phosphorous trichloride . PCl₃ is covalent. Phosphorus contain 5 electrons in valence shell and requires 3 more to complete octet and chlorine require one electron to complete octet so, the bond formed is by sharing of electron.

CaCl₂ is calcium chloride. CaCl₂  is an ionic. calcium is metal and  metal donates electron  to  chlorine is non metal and non metal accept electrons  and become Ca²⁺  and Cl⁻. The bond formed by the transfer of electrons.

CsCl is cesium chloride. CsCl is an ionic. symbol of ions : Cs⁺ and Cl⁻

CuCl₂ is copper(II) chloride. CuCl₂ is ionic formed by the transfer of electrons. symbol of ions : Cu²⁺ and Cl⁻

CrCl₃  is chromium(III) chloride. CrCl₃  is an ionic. symbol of ions : Cr³⁺ and Cl⁻.

Thus, The following chlorides are ionic or covalent:

SiCl₄ = covalent

PCl₃ = covalent

CaCl₂ = ionic

CsCl = ionic

CuCl₂ = ionic

CrCl₃ = ionic

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What occurs when copper sulfate solution is combined with a piece of silver metal?

If the reaction happens, you should also write the chemical equation in balance.

Reactions to displacement as a first option

A more reactive metal can displace a less reactive metal from a solution in a displacement reaction. The reactivity series of metals can be used to forecast the end products of a displacement process. The metals are arranged according to their reactivity with diluted acids in the reactivity series. A specific metal in the reactivity series may be displaced by metals positioned above it.

In the reactivity series, some of the elements above hydrogen (H) are potassium (K), sodium (Na), magnesium (Mg), zinc (Zn), and others. Several of the metals in the reactivity sequence below hydrogen

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Answer:

Explanation:

About 1.3 seconds

It takes light about 1.3 seconds to travel from the moon to the Earth at a distance of 384000 km. This is because the speed of light is about 300000 km/s. So, it takes light about 1.3 seconds to travel from the moon to the Earth.

Answer:

Electrical energy is caused by moving

electric ions.

Explanation:

The faster the charges move, the more electrical energy they carry. As the charges that cause the energy are moving, electrical energy is a form of kinetic energy.

In cellular respiration, carbon dioxide and water are the reactants, and fuel and oxygen are the products, this statement is false.

As in the cellular respiration, the fuel which is glucose and oxygen are the reactants, these react to form ATP, while the carbon dioxide and water are the products formed.

The equation of the reaction of cellular respiration is written as -

C₆H₁₂O₆ + 6 O₂ → 6 CO₂ + 6 H₂O + 25 ATP

glucose + water → carbon dioxide + water + ATP

Carbon dioxide and water are considered as byproducts or waste products. Aerobic respiration uses up the glucose and oxygen which releases the energy or results in the ATP formation.

Therefore, the statement given is false.

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Energy was lost by substance A to the environment is the statement which best supports the data in the table and is denoted as option D.

This is referred to as the processes which is characterized by the movement of energy from one system to another an an example is heat energy transfer which have different techniques such as conduction, convection etc.

Temperature on the other hand is the measure of the degree of hotness or coldness of a substance and is influenced by heat energy.

From the graph, we can deduce that substance has a temperature which was decreasing with time while substance B has a temperature which was constant throughout.

This therefore means that Energy was lost by substance A to the environment hence ,the reason why option D was chosen as the correct choice.

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The mass of the 13 cm³ of copper, given that 100 cm³ of it has a mass of 890 g is 115.7 g

We'll begin by obtainig the density of the copper. This can be obtained as illustrated below:

Density = mass / volume

Density of copper = 890 / 100

Density of copper = 8.9 g/cm³

Finally, we shall determine the mass of the 13 cm³ of copper. This is obatined as follow:

Density = mass / volume

Cross multiply

Mass = Density × volume

Mass of copper = 8.9 × 13

Mass of copper = 115.7 g

Thus, the mass of the copper is 115.7 g

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The mass of 13 cm³ of copper with a volume of 100 cm³ has a mass of 890 g is 115.7 grams.

Mass is defined as a dimensionless number used to describe the mass of a particle or item.

We'll start by finding out how dense copper is.

Given, Volume = 100 cm³

           Mass = 890 g

Density = Mass / Volume

             = 890 g / 100 cm³

             = 8.9 g/cm³

Now to determine mass is 13 cm³ of copper is

Density = Mass / Volume

So, Mass = Density x Volume

               = 8.9 g/cm³ x 13 cm³

               = 115.7 grams

Thus, the mass of 13 cm³ of copper with a volume of 100 cm³ has a mass of 890 g is 115.7 grams.

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A synthesis reaction is a reaction in which two compounds come together to form one. In this case, if the product is lithium sulfide, the reactants will be lithium and sulfur. Lithium in its natural form is solid, and sulfur also has a solid-state. Lithium sulfide is also a solid compound. The synthesis reaction will be:

Now, we have to balance the equation. We have two atoms of Li on the products side and 1 atom of Li on the reactants side. So, we put the coefficient 2 in Li molecules.

Now, we have the balanced equation of the synthesis reaction of Lithium Sulfide

Answer:

This is NOT a CUBE..

now Considering that one side of one small block is equal to 1 unit.

Then

Length = 3 units

Width = 3 units

Height = 4 units

Please tell me if this is correct

Length would be 3 units, Height is 4 units, and Width is I want to say 5 or 6 not truly sure

A covalent bond bond is appropriately described as occurring when one or even more electrons move of one atom to another.

a bond in which the two bound atoms' electron densities are unequally distributed as a result of either a difference in the electronegativity or the effects of induction.

A covalently bonded bond is represented by the water molecule, written as H2O. The oxygen atom is given more time with the electrons than for hydrogen atoms due to the unequal distribution of the electrons.

The electron is an unit of matter with a negative zero elementary charge electric charge. Due to their lack of known components, electrons, which are part of the first generation of lepton particles family, are typically regarded to be elementary particles or substructure

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Answer:

A water turbine is used to convert the energy contained in water, potential energy or kinetic energy, into mechanical or electrical energy. There are two types of water turbines, the reaction water turbine, and the impulse water turbine.

Explanation:

Answer:

Water turbines are used to take energy whether it may be kinetic or potential from the water and convert that energy into mechanical, or electrical energy.

Explanation:

Answer:

The Atomic Number

Explanation:

The atomic number is the number of protons of an atom in its nucleus.

Each element has a unique atomic number.

(view screenshot too, to find where it is in element table)

Explanation

Given:

mass of glycol = 0.250g

mass of solvent (water) = 40g = 0.04 Kg

i = 1

Required: The boiling point of the solution

Solution

where Kb is the boiling point elevation constant

m is the molal concentration (molality) of all species

Step 1: Find the moles of glycerol

n = m/M

n = 0.250g/92,09382 g/mol

n = 2.71x10^-3 mol

Step 2: Find the molality

molality (m) = moles of solute/Kg of solvent

molality = 2.71x10^-3/0.04Kg

molality = 0.068 m

Step 3: Find the change in temperature

Kb of water = 0.512 cm^-1

DT = 0.512 x 0.068

DT = 0.035 'C

Step 4: Find the boiling point

Boiling point of water = 100 'C

DT = 0.035 'C

New boiling point =100 + 0.035 = 100.035 'C

Answer

100.035 'C

Molality (W) is the ratio of the amount of substance of a solute (in moles – n) to the mass in kilograms of the solvent (m1). It can be calculated by the following formula:

W = n/m1

Step 1 - Let's discover how many moles of sodium fluoride is needed first.

Let's transform 600 g of water to kilograms:

1 g = 0.001 kg

600 g = 0.6 kg

W = 0.600m

m1 = 0.6

0.600 = n/0.6

n = 0.36 moles of sodium floride

Step 2 - Let's transform 0.36 moles of NaF into grams. Let's use the following formula: mass = moles x molar mass

molar mass of NaF = 42 g/mol

mass = 0.36 x 42

mass = 15.12 g

Answer: 15.12 g of NaF

Radium have a lower ionization energy than Barium because electrons are closer to the nucleus

What is ionization energy?

Ionization energy can be simply stated as a measurement of an atom's or ion's inclination to give up an electron or of how challenging it is to remove an electron from them. An electron is often lost when a chemical species is in its ground state.

The atom displays a smaller radius than anticipated and the s electrons are more challenging to expel because these electrons are located nearer the nucleus. The first ionization enthalpy of Radium is higher than that of Barium.

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A calibration curve is used to calculate the limit of detection and the limit of quantitation, as well as the concentration of an unknown material.

The concentration of an unidentified drug can be determined using a calibration curve. Researchers and developers can use these curves to determine where an unidentified substance plots by comparing them to data points of known drugs at various doses.

A calibration curve is used to calculate the limit of detection and the limit of quantitation, as well as the concentration of an unknown material. The instrument response to a series of standard samples at various concentrations is used to produce the curve.

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Answer:

Explanation:

The mass of the bone sample can be found by using the formula

mass = density × volume

From the question

density = 1200mg/cm^3

volume = 39.5cm^3

We have....

mass = 1200 × 39.5 = 47400

We have the final answer as

Hope this helps you

The balanced chemical reaction equation is obtained as [tex]Fe(s) + 2O_{2} (g) + H_{2} O ---- > 2Fe(OH)_{2} (aq)[/tex]

The term chemical reaction equation refers to the way that we represent the combination of the reactants that leads to the formation of the products ins given chemicals reaction process. We know that the stoichiometry of the reaction is very important as it does show us how the reactants and the products can be combined for the particular reaction that we are considering.

We now have the reaction that is occurring between the metallic iron and oxygen and water. This is the reaction that occurs when there is rusting that is occurring on a given or  particular piece of iron as we have it here.

We shall now attempt to look at the equation so that the equation that has been shown in the question can be appropriately balanced according to the rules.

Thus, we could write the balanced chemical reaction equation as; [tex]Fe(s) + 2O_{2} (g) + H_{2} O ---- > 2Fe(OH)_{2} (aq)[/tex]

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The volume of water used is 500cm^3.

The volume of water used.

NaOH concentration in mol/dm^3=NaOH concentration in g/dm^3/molar mass of NaOH.

M of NaOH=23+16+1=40

M=40 g/mol

0.2mol= concentration of NaOH in g/dm^3/40g/mol

=0.2mol/dm^3*40g/mol

=8g/dm^3

we know that,

1dm^3=1000cm^3

4.00g of NaOH will be dissolved in 4g*1000cm^3/8g

=500cm^3 of water

So, the volume of water used is 500cm^3.

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Answer:

20cm³

Explanation:

Volume = Molarity*number of moles

number of moles = Mass given/Molar mass

number of moles= 4.00g/40.0g

number of moles= 0.1mols

thus:

Volume= 0.200mol/dm³*0.1mol

Volume= 0.02dm³(20cm³)

the diagram of downs cell

The distance between the earth and star = 8 ✕ (9.46 ✕ 1012) = 7.6 ✕ 1013 km.

What is exoplanet?

Every planet in our solar system orbits the Sun. Planets known as exoplanets orbit other stars. It is quite challenging to directly observe exoplanets with telescopes. They are hidden by the bright light from the stars they orbit.

It is challenging to give distances in kilometers for many celestial objects since they are so far away from the earth, such as galaxies or stars.

How far light may travel in a year is measured in large units called light-years. The vast distances are therefore expressed in terms of light-years.

9.46 x 1012 kilometres make up a light year.

In other words, if a star is eight light-years away, light would travel that distance in eight years. This is how the distance between a star and the earth is calculated.

Therefore, the distance between the earth and the star is 8 (9.46 1012) = 7.6 1013 kilometers.

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Considering the definition of calorimetry, if 200.0 g of ice absorb 1255.0 J of heat, the temperature change is 2.988°C.

Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.

Sensible heat is defined as the amount of heat that a body absorbs or releases without any changes in its physical state (phase change). So, the amount of heat that a body receives or transmits is determined by the following expression:

Q = c×m×ΔT

Where:

In this case:

Replacing in the definition of calorimetry:

1255 J = 2.1 J/gC× 200 g× ΔT

Solving:

1255 J ÷(2.1 J/gC× 200 g)= ΔT

2.988 °C= ΔT

Finally, the temperature change is 2.988°C.

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The percent composition are the percent in mass of each atom in the molecule.

Since we know that the molar mass of the substance is 334.0 g/mol, we can use it to figure out how much of each atom we have per molecule.

Starting from carbon, we know it is 75.42% of the mass.

In 1 mol of the substance, there are 334.0 g, 75.42% of which is from carbon atoms.

So, in 1 mol of the substance, there are the following mass of carbon:

The aromic mass of the carbon atom is 12.0107 g/mol.

That is, in 1 mol of the substance -> 251.9028 g of C.

That mass of carbon is equivalent to:

So, in 1 mol of the substance -> 251.9028 g of C -> 21 mol of C. This means that for each molecule of the substance we have 21 atoms of carbon.

Now, we can just repeat the process for Hydrogen, Nitrogen and Oxygen.

Hydrogen has an atomic mass of 1.00794 g/mol, and the percent composition of it is 6.63%, so:

So, for each molecule of the substance there are 22 atoms of hydrogen.

Nitrogen has an atomic mass of 14.0067 g/mol, and the percent composition of it is 8.38%, so:

So, for each molecule of the substance there are 2 atoms of nitrogen.

Oxygen has an atomic mass of 15.9994 g/mol, and the percent composition of it is 9.57%, so:

So, for each molecule of the substance there are 2 atoms of oxygen.

To summarize, we have, for each molecule of the substance:

- 21 carbon

- 22 hydrogen

- 2 nitrogen

- 2 oxygen

So, the molecular form of the substance is C₂₁H₂₂N₂O₂.

Correct option is OC-  Developing a machine to control the rate of a reaction according to engineering

What is engineering?

Engineering is a field that has been performed for thousands of years, but STEM education, which attempts to engage students with science, technology, engineering, and mathematics, includes it as a component.

The Parthenon, Stonehenge, and the Pyramids of Giza, among other places, are instances of engineering. However, modern engineers work in a variety of fields in addition to erecting structures.

Engineers work on a variety of things, including as cell membranes, building materials, prosthetics, increasing the efficiency of engines and vehicles, and creating renewable energy sources.

Correct option is OC-  Developing a machine to control the rate of a reaction according to engineering

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According to the given statement The molarity of the iron(II) solution is 0.648 M.

The amount of the sample in a specific solution volume is defined as its molarity (M). The molarity of a solute per litre of a solution is known as molarity. The molar concentration is yet another name for molarity.

Iron(II) solution volume (V₁) = 25.0 mL/0.025 L

Dichromate solution (V₂) has a volume of 18.0 mL, or 0.018 L.

Dichromate solution molarity (M₂) = 0.150 M

Molarity of dichromate solution is :

M₂ = n₂/V₂

(n₂  = M₂* V₂ = 0.150  * 0.018 = 2.7 * 10⁻³ mol

Complete balanced equation is given below.

[tex]6 \mathrm{Fe}^{2+}(a q)+\mathrm{Cr}_2 \mathrm{O}_7^{2-}(a q)+14 \mathrm{H}^{+}(a q) \rightarrow 6 \mathrm{Fe}^{3+}(a q)+2 \mathrm{Cr}^{3+}(a q)+7 \mathrm{H}_2 \mathrm{O}[/tex]

It is obvious from the equation that 1 mole of dichromate is needed to make 6 moles of iron(II) solution.

Therefore, we calculate the number of moles of iron(II) solution using the unitary technique.

1 mole of dichromate is equal to 6 moles of iron (II)

6n₂ moles of iron are equal to n₂ moles of dichromate (II)

=6 * 2.7 * 10⁻³ = 0.0162 mol Fe²⁺

So, 0.0162 moles of iron(II) is needed. Therefore,

Now, molarity of iron(II) solution is given as: n[tex]_1[/tex] = 0.0162

Molarity = Moles ÷ Volume

M₁ = n[tex]_1[/tex]/V₁

M₁ = 0.0162mol/0.025 L = 0.648 M

The molarity of the iron(II) solution is 0.648 M.

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The complete question is -

The titration of 25.0 mL of an iron(II) solution required 18.0 mL of a 0.150M solution of dichromate to reach the equivalence point. What is the molarity of the iron(II) solution?

The minimum mass of octane that could be left over is 0.468 grams.

Step 1: Data given

Mass of octane = 3.4 grams

Mass of oxygen = 20.5 grams

Molar mass octane = 114.23 g/mol

Molar mass oxygen = 32.0 g/mol

Step 2: The balanced equation

2C₈H₁₈ + 25O₂ → 16CO₂ + 18H₂O

Step 3: Calculate the number of moles

Moles = mass / molar mass

Moles octane = 3.4 grams / 114.23 g/mol

Moles octane = 0.0297 moles

Moles O₂ = 20.5 grams / 32.0 g/mol

Moles O₂ = 0.640 moles

Step 4: Calculate the limiting reactant

For 2 moles octane we need 25 moles O₂ to produce 16 moles CO₂ and 18 moles H₂O

O₂ is the limiting reactant. It will completely be consumed (0.640 moles). There will react 0.0320/ 12.5 = 0.0256 moles.

There will remain 0.0297 - 0.0256  = 0.0041 moles octane.

Step 5: Calculate mass octane remaining

Mass octane = moles * molar mass

Mass octane = 0.0041 moles * 114.23 g/mol

Mass octane = 0.468 grams

The minimum mass of octane that could be left over is 0.468 grams.

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The final pressure of the balloon that was initially filled with a volume of 2.20L to 3.86L is 430.3mmHg.

The pressure of a gas can be calculated using the Boyle's law equation as follows:

P₁V₁ = P₂V₂

Where;

According to this question, the volume of a balloon filled with He at 755 mmHg is expanded from 2.20L to 3.86L at a constant temperature. The final pressure can be calculated as follows:

755 × 2.2 = P₂ × 3.86

1661 = 3.86P₂

P₂ = 430.3mmHg

Therefore, the final pressure of the balloon that was initially filled with a volume of 2.20L to 3.86L is 430.3mmHg.

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Among the given options, the option A which is A person's weight on the moon is the less than on the Earth, due to the force of gravity, is true.

The weight of a person is usually one-sixth less than their Earth's weight. Only the value of weight fluctuates from Earth to the moon, whereas the mass stays the same on both earth and moon.

This happens due to the gravitational force of the moon. Moon is smaller than the Earth, therefore it has low gravitational forces. Moon's gravitational force leads to the difference in the weights on the Earth and the moon.

The moon of Earth has comparitively less amount of mass than Earth. It is not only small in size than but it also is not as dense as earth. It is only 60 % dense which leads to lower gravitational pull, hence leading to difference in the weight.

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