Kate wrote the steps of the carbon cycle to describe how carbon is cycled through specific organisms. The steps are in random order.

1 - The rabbit decomposes.
2 - The rabbit eats the carrot plant.
3 - The carrot plant takes in carbon dioxide from the air during photosynthesis.
4 - Carbon compounds are returned to the soil.

Which lists the steps in order?

2, 3, 1, 4
3, 2, 1, 4
3, 4, 2, 1
2, 4, 3, 1

a. The chemical reaction can be rewritten as a word equation as follows:

Hydrogen Peroxide -> Oxygen + Water

b. Evidence that a chemical reaction has occurred includes the production of a new substance (oxygen and water), a change in the physical properties of the reactants (change in color, odor, or temperature), and the release of energy (evolution of oxygen gas).

c. The reaction is likely exothermic, which means it releases energy. This is because the reaction produces new substances (oxygen and water) and releases energy in the form of oxygen gas. In an endothermic reaction, the reactants would absorb energy from the surroundings.

To determine the number of dozen lead(II) chloride formula units that can be produced from 4.5 dozen cobalt(VI) chloride units, we need to consider the stoichiometry of the reaction.

The balanced chemical equation for the reaction between cobalt(VI) chloride (CoCl_3) and lead(II) nitrate (Pb(NO_3)_2) can be written as follows:

3 CoCl_3 (aq) + 2 Pb(NO_3)_2 (aq) -> 3 PbCl_2 (s) + 2 Co(NO_3)_6 (aq)

From the balanced equation, we can determine the stoichiometric ratio between cobalt(VI) chloride and lead(II) chloride. For every 3 moles of cobalt(VI) chloride, 3 moles of lead(II) chloride are produced. This ratio can be expressed as:

3 CoCl_3 : 3 PbCl_2

To calculate the number of dozen lead(II) chloride formula units that can be produced from 4.5 dozen cobalt(VI) chloride units, we need to convert the given quantity to moles.

Since there are 3 moles of cobalt(VI) chloride for every 3 moles of lead(II) chloride, we can infer that the number of moles of lead(II) chloride will be the same as the number of moles of cobalt(VI) chloride.

As there are 12 formula units in a mole, 4.5 dozen cobalt(VI) chloride units correspond to 4.5 moles. Since the stoichiometric ratio between cobalt(VI) chloride and lead(II) chloride is 1:1, we can conclude that 4.5 dozen cobalt(VI) chloride units will yield 4.5 dozen lead(II) chloride formula units.

Therefore, from 4.5 dozen cobalt(VI) chloride units, we can make 4.5 dozen lead(II) chloride formula units.

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Answer:

carbon dioxide makes up the variety of greenhouse gas emission from the sector but smaller amount of methane nitrous oxide are also emmited and all these gases are released during the combustion of fossil fuels, such as coal,oil and natural gas, to produce electricity

Answer:

False, the empirical formula denotes the smallest whole-number ratio of atoms in a compound

Explanation:

a molecular formula is the total number of atoms in the compound

Answer:

The enthalpy of reaction is -185 kJ

Explanation:

To get the reaction:

 H₂(g) + Cl₂(g) → 2 HCl(g)

you must follow the following steps:

1)  Reactive molecules must break their bonds to obtain their atoms.

H₂(g) → 2 H(g)

Cl₂(g) → 2 Cl(g)

Bond energy (or enthalpy) is the energy required to break one mole of bonds of a gaseous substance. In the case of diatomic molecules with a single bond, it corresponds to the energy necessary to dissociate 1 mole of said substance in the atoms that form it.

Whenever you want to break links you must supply energy, so the link enthalpy will have positive values; while when a mole of bonds is formed energy is released and the bond enthalpy of this process will be negative.

In this case you will then have:

H₂(g) → 2 H(g)           ΔH=436 kJ/mol

Cl₂(g) → 2 Cl(g)         ΔH=243 kJ/mol

So the total energy needed to break all the bonds is:

ΔH=1 mol*436 kJ/mol +1 mol* 243 kJ/mol= 679 kJ

2) The atoms that were obtained in the break of the bonds must be combined to obtain the product.

2 H (g) + 2 Cl (g) → 2 HCl (g)

Being the single bond energy for one mole of 431 kJ H-Cl bonds and considering that two moles of H-Cl bonds are formed, the ΔH is:

ΔH = -2 moles* (432 kJ/mol) = -864 kJ

As mentioned, when a mole of bonds is formed energy is released, the bond enthalpy of this process will be negative.  So the formation of HCl is negative.

Hess's law states that the energy change in an overall chemical reaction is equal to the sum of the energy changes in the individual reactions comprising it. So:

ΔHtotal= -864 kJ + 679 kJ

ΔHtotal= -185 kJ

The enthalpy of reaction is -185 kJ

Explanation:

n=,4.5 moles C2H6

the ratio 2:7

4.5:x

x=15.75 moles

Lewis structure is the electron dot representation of the atomic and molecular bonds of the molecules. Trigonal planar is the shape of the formaldehyde.

A trigonal planar shape of the molecule is the arrangement of the central atom attached to the other three atoms making them look triangle-shaped.

The attachment of the carbon to the two hydrogens and one oxygen atom can be given by the VSEPR theory. The number of the electron pair in the molecule is 3 making them \(\rm sp_{2}\) hybridized and hence have a trigonal planar shape.

Therefore, option D.  trigonal planar is the shape.

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Answer:

True

Explanation:

The ascending material collides with the unyielding lithosphere and becomes immobile.

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Answer:

blobby`

Explanation:

abc

In order to reduce the risk of radiation exposure to individuals and environmental contamination, radioactive wastes are kept. The wastes' radioactivity decreases over time.

Large steel and concrete barrels that contain the garbage are typically properly sealed, although accidents and leaks can still happen. Cancerous growths can result from the severe negative impacts of nuclear waste on life.

Currently, dry casks are used to store all of the nuclear waste that a power plant produces over the course of its lifetime. Since 1987, Yucca Mountain in Nevada has been intended as a permanent disposal location for spent nuclear material.

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Yes, the sea is considered a buffer.

A buffer is a solution that resists pH changes when acids or bases are added. The buffering capacity of the ocean allows it to maintain a relatively stable pH even when acids and bases are added.

The ocean's buffering capacity is primarily due to the presence of dissolved compounds such as bicarbonate (HCO3-) and carbonate (CO32-). These compounds act as both weak acids and bases, accepting and releasing hydrogen ions (H+) to maintain pH balance. When carbon dioxide (CO2) in the atmosphere dissolves in seawater, carbonic acid (H2CO3) is produced and decomposed into bicarbonate ions and hydrogen ions.

This transformation helps prevent a rapid drop in pH as excess hydrogen ions combine with carbonate ions to form bicarbonate ions, which can reduce overall acidity.

When alkali such as hydroxide ions (OH-) is added to the ocean, excess hydroxide ions combine with hydrogen ions to form water molecules, reducing alkalinity.

The presence of these dissolved compounds and their interconversion reactions stabilize the pH of the ocean, making it less susceptible to rapid changes in acidity or alkalinity. This buffering capacity is essential for the survival and maintenance of marine life, as many organisms are sensitive to changes in pH.

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Answer:  Charged particles that play an important role in the firing of action potentials in the nervous system are called ions.

Explanation:

Ions are atoms or molecules that have gained or lost electrons, resulting in a positive or negative charge. In the context of the nervous system, ions are crucial for the generation and propagation of electrical signals known as action potentials.

The two primary ions involved in action potentials are sodium ions (Na+) and potassium ions (K+). The cell membrane of neurons contains ion channels that are selectively permeable to these ions. At rest, the inside of the neuron is negatively charged relative to the outside, creating a resting membrane potential.

When a neuron is stimulated, ion channels open, allowing ions to move across the cell membrane. In the case of an action potential, depolarization occurs, where sodium ions rush into the neuron, reversing the charge and creating a positive membrane potential. This influx of positive charge leads to the firing of the action potential.

Following depolarization, repolarization takes place, where potassium ions move out of the neuron, restoring the negative membrane potential. This repolarization phase is critical for the neuron to return to its resting state and be ready for subsequent action potentials.

Ions also play a role in other aspects of neuronal function. For example, calcium ions (Ca2+) are involved in synaptic transmission, where they trigger the release of neurotransmitters from synaptic vesicles. These neurotransmitters then transmit the electrical signal from one neuron to another across the synapse.

Ions are the charged particles that are vital for the firing of action potentials in the nervous system. Sodium and potassium ions are primarily responsible for the generation and propagation of action potentials, while other ions, such as calcium ions, participate in synaptic transmission.

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There are 1.31 x 1022 bromide ions in 2.00 g of \(MgBr_2\).

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Answer: solvent

called a solvent to form a solution.

Explanation:

have great day

Answer:

thermal shock

Explanation:

the temperatures inside the glass jar should have continued to increase over time. Internal stresses due to uneven heating. This is also known as “thermal shock”.

In general, the thicker the glass, the more prone it will be to breaking due to the immediate differences in temperature across the thickness of glass.

Borosilicate glass is more tolerant of this, as it has a higher elasticity than standard silicon glass.

You may also note that laboratory test tubes and flasks are made with thinner walls, and of borosilicate glass, when designated for heating.

Remember to record your calculations and provide the final answer in g/mL.

To calculate the average density of a penny made after 1982, you need to know the mass and volume of the penny. The formula for density is density = mass/volume.

First, you'll need to find the mass of a penny made after 1982. You can use a scale to measure the mass in grams.

Next, you'll need to find the volume of the penny. Since a penny is a flat object, you can measure its thickness using a caliper and then calculate the volume using the formula volume = thickness x area.

Once you have both the mass and volume, you can divide the mass by the volume to calculate the density of the penny in g/mL.

Remember to record your calculations and provide the final answer in g/mL.

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To calculate the average density of a penny made after 1982, first find the mass of the penny (approximately 2.5 grams) and then its volume by noting the displacement of water when it is completely submerged. Use the formula for density (density = mass/volume) to calculate the average density of the penny.

Calculating the average density of a penny involves two primary steps. Firstly, establish the mass of the penny, and secondly, determine the volume of the penny.

The known mass of a post-1982 penny is roughly 2.5 grams.

To find the volume of the coin (or any object), we can submerge it completely in a measuring cup of water and observe how much the water level raises. This is displacement and represents the volume of the penny.

We use the formula density = mass/volume to get the average density. So, if for example, the volume of the penny is 0.350 cm³, the density will be density = 2.5g / 0.350 cm³ = 7.14 g/cm³.

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The distance between the two points ( 8 , − 5 ) and ( 1 , 1 ) is determined as 9.2 units.

The distance between two points is calculated using the following equation.

for a given points (x1, y1), (x2, y2), the distance, d is;

d = √[(x2-x1)² + (y2 - y1)²]

From the given question;

x1 = 8, y1 = -5

x2 = 1, y2 = 1

distance = √[(1-8)² + (1 - -5)²]

distance = √[(-7)² + (16)²]

distance = 9.22 units

Thus, the distance between the two points ( 8 , − 5 ) and ( 1 , 1 ) is determined as 9.2 units.

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Answer:

SEE EXPLANATION

Explanation:

A)

1) The balanced  chemical reaction is;

Fe2O3 + 3H2O------> 2Fe(OH)3

2) C12H22O11------> 12 C + 11H2O

B)  1 is a combination reaction

     2 is a decomposition reaction

C) The molar mass of NH3 is 14 + 3(1) = 17 g/mol

Percentage composition of N = 14/17 * 100/1 = 82. 4 %

D) 1 mole of O2 contains 6.02 * 10^23 particles

E) For (NH4)3 PO4

We have 3(14 + 4(1)) + 31 + 4(16) = 149 g/mol

F) 1 mole of CaCO3 contains 100g of CaCO3

1.25 moles of CaCO3 contains 1.25 * 100/1 = 125 g of CaCO3

Answer:  the answer is C. The warmer object's particles speed up

the cooler object's particles.

Explanation:    Conduction occurs when a substance is heated, particles will gain more energy, and vibrate more. These molecules then bump into nearby particles and transfer some of their energy to them. This then continues and passes the energy from the hot end down to the colder end of the substance.

The electrospray and APCI interfaces are two different methods used in mass spectrometry for ionization of analyte molecules. The main difference between these two methods is the way they ionize the analyte molecules.

In electrospray ionization (ESI), the sample is dissolved in a volatile solvent and sprayed through a small orifice with a high voltage applied to it. As the liquid droplets pass through the electric field, the solvent evaporates, leaving charged droplets. The charged droplets then undergo Coulombic fission, resulting in the formation of charged analyte ions. The ions are then drawn into the mass spectrometer by an electrostatic field. In atmospheric pressure chemical ionization (APCI), a nebulizer is used to generate a fine spray of the sample solution. The spray is then passed through a corona discharge, which generates ions in the gas phase. These ions react with the sample molecules to form charged analyte ions. The ions are then drawn into the mass spectrometer by an electrostatic field. Ion suppression is a phenomenon that occurs when some components of a sample suppress the ionization of other components. This can lead to an underestimation of the concentration of some analytes. Ion suppression can occur due to competition for ionization sites, chemical reactions that consume ions, or physical interactions between the analyte and matrix components. Ion suppression can be minimized by optimizing the sample preparation and by using chromatographic techniques that separate the analyte from the matrix components.

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The unbalanced chemical equation is:  Na + H₂O → NaOH + H₂

The unbalanced chemical equation in words: One mole of sodium atom reacts with one mole of water to form one mole of sodium hydroxide and one mole of hydrogen gas.

The number of atoms on the reactant side is: 1 Na, 2 H, and 1 O

The number of atoms on the product side is: 1 Na, 3 H, and 1 O

Chemical equations are equations that use the symbols of the elements to represent the chemical reaction that occurs between elements or compounds called reactants to form products.

A chemical equation may be balanced or unbalanced.

A chemical equation is unbalanced when the number of moles of atoms of each element reacting is not equal on both sides of the reaction.

A chemical equation is balanced when the number of moles of atoms of each element reacting is equal on both sides of the reaction.

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Answer:

6.25 g of nickel -63 will be left

Explanation:

A second-order reaction results in the breakdown of substance X. It takes 0.50 0.025 h for just a solution with an initial concentration of 1.00 0.5 M in X to degrade to 0.025 M 0.50M.

Reaction is what?

reaction definition 1 a: the reactionary act, process, or instance b: a power, influence, or activity that is opposed or opposed to especially: propensity for an old, typically obsolete political, social, or policy

What does a response time test entail?

regarding the test. This is a straightforward tool for calculating reaction times. According to the information gathered so far, the response time was 215 milliseconds on average (median). The latency of the computer and screen has an impact on this test in addition to assessing your reaction time.

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The common packaging material produced from the ore bauxite is aluminum. Bauxite is a naturally occurring mineral that is the primary source of aluminum.

Through a process called the Bayer process, bauxite is refined to extract alumina (aluminum oxide), which is then further processed to obtain pure aluminum. Aluminum is widely used in the packaging industry due to its lightweight, corrosion resistance, and ability to be easily formed into various shapes and sizes. It is commonly used for beverage cans, food containers, foil, and other packaging applications.

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Answer:

Fal down to the flour

Explanation:

Because of gravity their is weight that weight keeps us down to earth everything has weight even a leaf not only weight but the atmosphere is like a wall that keeps us safe from all the stuff in space.

Answer:

Conductors

Explanation:

Hope this helps!