Which refers to a phenomenon that occurs as solar radiation is absorbed by Earth’s surface and re-radiated into the atmosphere, where it gets trapped and warms the Earth? energy budgeting greenhouse effect solar circulation incoming radiation

An exothermic process is one that gives off heat.

Explanation:

This heat is transferred to the surroundings. An endothermic process is one in which heat has to be supplied to the system from the surroundings.

Answer:

liquid

Explanation:

a molecule consists of different atoms chemically combined. A molecule is also a liquid. Molecules make up ice cubes, which are also small water particles which arr yet again liquid.

Thermal energy can be transferred through solids, liquids, and gases in three main ways: conduction, convection, and radiation.

Conduction is the transfer of heat through direct contact between objects or particles. In solids, this is the primary mode of heat transfer. Convection is the transfer of heat through the movement of fluids (liquids or gases) caused by differences in temperature and density. This is the primary mode of heat transfer in liquids and gases.

Radiation is the transfer of heat through electromagnetic waves, which can travel through empty space and do not require a medium to propagate. This mode of heat transfer is important for transferring heat from the sun to Earth and for certain industrial applications.

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Answer:

2HCl+Na_2S_2O_3=2NaCl+H_2O+S+SO_2

Explanation:

First balance Na

On the right side gf the equation there are 2Na, so on the left side it should be equal.

So HCl+Na_2S_2O_3=2NaCl+H_2O+S+SO_2

Then do the same with Cl and move on with the atoms.

There cannot be a reaction between solid magnesium metal and aqueous sodium nitrate because magnesium cannot displace sodium from solutions.

The activity series of metal is a table that arranges metals or their ions in descending order of reactivity. In other words, it is a table that arranges metals based on how reactive they are from the strongest to the weakest.

Metals at the top of the reactivity series are able to displace metals that are below them in reactivity. On the other hand, lower-placed metals cannot displace higher-placed metals on the reactivity series.

The reactivity series of metals follows the pattern, potassium<sodium<calcium<magnesium<carbon<zinc, and so on.

Considering this fact, one would not expect solid magnesium metal to displace sodium from solutions because sodium is more highly placed on the reactivity series table than magnesium. If the reverse were to be the case, however, sodium would be able to displace magnesium.

Hence, there cannot be a reaction between solid magnesium metal and aqueous sodium nitrate.

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Answer:

There cannot be a reaction because magnesium cannot displace sodium from solutions.

I hope this helps! Cheers ^^

During heavy exercise, the buildup of lactic acid in muscle cells results in oxygen debt.

During exercise, the body needs more energy to fuel muscle contractions. Initially, this energy is supplied through the breakdown of glucose in the presence of oxygen, a process known as aerobic respiration. However, as the intensity of exercise increases, the body may not be able to supply enough oxygen to the muscles to sustain aerobic respiration. In this case, the body switches to anaerobic respiration, which does not require oxygen but produces lactic acid as a byproduct.

Lactic acid buildup in the muscles can lead to fatigue and a burning sensation. Additionally, when the body switches to anaerobic respiration, it produces less ATP per glucose molecule than in aerobic respiration. This means that the body needs to break down more glucose to produce the same amount of ATP, which creates an oxygen debt. The oxygen debt must be repaid after exercise, as the body needs oxygen to convert lactic acid back into glucose and to replenish ATP stores.

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your messageConvert to number of atoms 294 grams AuTo convert 294 grams of Au to the number of atoms, we need to use the Avogadro's number, which is 6.022 x 10^23 atoms/mole. First, we need to find the number of moles of Au in 294 grams: 294 grams Au / 196.97 g/mole = 1.49 moles Au Next, we can calculate the number of atoms: 1.49 moles Au x 6.022 x 10^23 atoms/mole = 8.97 x 10^23 atoms Au Therefore, there are approximately 8.97 x 10^23 atoms of gold in 294 grams.

Answer:

   ‏‏‎ ‎

Explanation:‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎

Answer:

C. Helium Atom

Explanation:

Helium has less mass than hydrogen, proton, and electron

Answer:

They are fossil fuels because they were formed because of fossilized remains of animals and plants that lived many years ago. They also have a high carbon content.

The type of IMF between nonpolar covalent molecules is the London dispersion force. The type of IMF between polar covalent molecules is dipole-dipole force. The type of IMF between water molecules is hydrogen bonding.

The London dispersion force is a result of electron movement and results in the formation of temporary dipoles in molecules. This happens because the movement of the electrons in nonpolar molecules isn't uniform; it's constantly fluctuating. As a result, there will be areas where electrons are more concentrated than others, resulting in temporary positive and negative charges.

Polar covalent molecules have dipole-dipole force. It's due to the partial positive charge on one molecule interacting with the partial negative charge on another molecule.

Ionic compounds have ionic bonds, and it's an electrostatic attraction between positively and negatively charged ions.

Water molecules have hydrogen bonding. The molecules in the water are held together by hydrogen bonds, which are strong IMF.

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The difference in the number of covalent bonds between nitrogen (N2) and oxygen (O2) is due to their electronic configurations and the stability they achieve by forming specific types of bonds.

In the case of nitrogen (N2), each nitrogen atom has five valence electrons. In order to achieve a stable electronic configuration, nitrogen needs to share three electrons with another nitrogen atom. This is achieved through the formation of a triple covalent bond, where each nitrogen atom shares three electrons with the other.

On the other hand, oxygen (O2) has six valence electrons per oxygen atom. To achieve a stable electronic configuration, each oxygen atom needs to share two electrons with another oxygen atom. This is achieved through the formation of a double covalent bond, where each oxygen atom shares two electrons with the other.

The reason for this difference lies in their atomic orbitals. Nitrogen has three unpaired electrons in its 2p orbitals, allowing it to form three covalent bonds. Oxygen, on the other hand, has two unpaired electrons in its 2p orbitals, allowing it to form two covalent bonds.

Additionally, the bond strength also plays a role. The triple bond in N2 is stronger than the double bond in O2, requiring more energy to break. This is due to the overlap of atomic orbitals and the sharing of electrons in the bonding process.

In summary, the difference in the number of covalent bonds between N2 and O2 is a result of their electronic configurations and the stability they achieve through specific bond formations based on their valence electrons and atomic orbitals.

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The name of the organic compound is 2-methyl pentane. The given organic compound is a five-carbon system with a substitution at the C-2 carbon. The naming of an organic compound is done according to the rules given by IUPAC.

The given organic compound has 5 carbon in its main chain. So It has the root word Pent. Since, all the bonds are single bonds, the organic compound is saturated, hence it has the suffix -ane. Hence the unsubstituted straight chain is pentane.

Numbering is done from right to left, because when the numbering is from right to left, the substituted carbon gets C-2, when it is numbered from left to right, the substituted carbon gets C-4. So the numbering is from the right and the substituted carbon is C-2. The substituent is a single carbon system, a methyl substituent. So the organic compound is named 2-methyl pentane .

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The type of reaction represented by the equation is replacement reaction.

A replacement reaction also known as displacement reaction is a reaction in which the ions of the reactant exchange to produce a new product. For example

AB + CD —> AD + CB

In the above reaction, we can see that D replaces B in the product which shows that the reaction is a replacement reaction.

NaCl + AgNO₃ → NaNO₃ + AgCl

In the above reaction, we can see that Cl replaces NO₃ in the product. This simply indicates that the reaction is a replacement reaction.

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The electrochemistry underlying the electrical current in a neuron as it is stimulated involves sodium channels opening to allow sodium to enter the cell.
2. The most fundamental variable that can likely explain the evolution of bigger brains is the overall ecological complexity that the animal deals with.

During neuron stimulation, an action potential is generated. This process involves the depolarization of the neuron's membrane, which is achieved by the influx of positively charged ions, primarily sodium ions (Na+). When a neuron is stimulated, voltage-gated sodium channels in the cell membrane open, allowing sodium ions to rapidly enter the cell. This influx of positive charge depolarizes the membrane, creating an electrical current that propagates along the neuron.

Regarding the second question, the most fundamental variable that can likely explain the evolution of bigger brains is the overall ecological complexity that the animal deals with. Animals that inhabit complex and challenging environments often require enhanced cognitive abilities to navigate and respond to their surroundings effectively. The ecological complexity, such as varied food sources, social interactions, and environmental stimuli, can drive the evolutionary pressure for larger brain size and increased cognitive capacity. While factors like diet, sociality, and mating strategies may play a role, the overall ecological complexity is considered a crucial determinant of brain evolution.


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The new pressure be and in which direction would air flow is 1140 mmHg.

Using Boyle's law, we know that the pressure and volume of a gas are inversely proportional. Therefore, if the volume of the alveolus decreases from 3 ml to 2 ml, the pressure inside the alveolus will increase by a factor of 3/2 or 1.5 times. The new pressure inside the alveolus will be 760 mmHg x 1.5 = 1140 mmHg.

According to the principles of gas flow, air moves from an area of higher pressure to an area of lower pressure. Therefore, in this scenario, air would flow out of the alveolus since the pressure inside the alveolus (1140 mmHg) is now higher than the atmospheric pressure outside the body (760 mmHg).

It's important to note that this scenario assumes that all other factors affecting the pressure inside the alveolus, such as temperature and the number of gas molecules, remain constant.

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Answer:

Chemical Change

Explanation:

Answer:

to balance put these numbers infront

2C2H2+5O2--->4CO2+2H2O

Answer: The molecules in hot water move faster and are slightly further apart.

Explanation:

There's more space between the molecules, the volume of hot water has fewer molecules in it and weighs a little bit less than the same volume of cold water. So hot water is less dense than cold water.

Answer: 5.0 g of hydrogen

Explanation:

Sn

l

+

2HF

→

SnF

2

+

H

2

Moles of H

2

=

2.5

mol Sn

×

1 mol H

2

1

mol Sn

=

2.5 mol H

2

Mass of H

2

=

2.5

mol H

2

×

2.016 g H

2

1

mol H

2

=

5.0 g H

2

Answer: Boiling point of the given solution is \(102.048^{o}C\).

Explanation:

Given: Molality = 2.00 m

\(k_{b} = 0.512^{o}C\)

Now, equation for dissociation of water is as follows.

\(H_{2}O \rightarrow H^{+} + OH^{-}\)

As it is giving 2 ions upon dissociation. So, the value of i = 2.

Formula used to calculate change in temperature is as follows.

\(\Delta T = i \times k_{b} \times m\)

where,

i = Van't Hoff factor

\(k_{b}\) = molal boiling point elevation constant

m = molality

Substitute the values into above formula as follows.

\(\Delta T = i \times k_{b} \times m\\= 2 \times 0.512^{o}C \times 2.00 m\\= 2.048^{o}C\)

As the boiling point of water is \(100^{o}C\). Hence, the boiling point of solution will be as follows.

\(\Delta T^{'}_{b} = 100^{o}C + 2.048^{o}C\\= 102.048^{o}C\)

Thus, we can conclude that boiling point of the given solution is \(102.048^{o}C\).

Answer:

B

Explanation:

Answer:

C) B AND C

Explanation:

points

The balanced chemical equation for Na₃PO₄ and FeCl₂:

2 Na₃PO₄ (aq)  + 3 FeCl₂ (aq)   →  Fe₃(PO₄)₂ (s) +  6NaCl (aq)

The net ionic equation of HNO₃ and LiOH:

H⁺(aq)  + OH⁻(aq) →  H₂O (l)

The net ionic equation is an equation of a chemical reaction that expresses only elements,  ions, or compounds, that directly participated in that chemical reaction.

We can write a balanced  chemical equation for Na₃PO₄ and FeCl₂:

2 Na₃PO₄ (aq)  + 3 FeCl₂ (aq)   →  Fe₃(PO₄)₂ (s) +  6NaCl (aq)

The complete ionic equation can be written for reaction of Na₃PO₄ and FeCl₂:

6Na⁺ (aq) + 2PO₄³⁻ (aq)  +  3 Fe³⁺ (aq) + 6Cl⁻ (aq)  → Fe₃(PO₄)₂ (s) +  6 Na⁺ (aq) +  6Cl⁻ (aq)

The balanced chemical equation for  HNO₃ and LiOH:

HNO₃ (aq)  + LiOH (aq)  →  H₂O (l)  +  LiNO₃ (aq)

The complete ionic equation for HNO₃ and LiOH::

H⁺(aq)  + NO₃⁻ (aq)  +  Li⁺(aq)  +  OH⁻ (aq)   →  H₂O (l) +  Li⁺(aq) + NO₃⁻ (aq)

The net ionic equation of HNO₃ and LiOH:

H⁺(aq)  + OH⁻(aq) →  H₂O (l)

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The pH value when a solution with a pH of 5 and pH 2 mixed together will depend on the amounts of each solution that were mixed together.

To calculate the resulting pH value, you would need to use the equation for calculating the pH of a solution:

pH = -log[H⁺]

where [H⁺] is the concentration of hydrogen ions in the solution. The pH of the resulting solution will be lower than pH 5, since pH 2 is more acidic than pH 5. However, without knowing the specific concentrations of the solutions that were mixed together, it is not possible to determine the exact pH value of the resulting solution.

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Answer:

depends on the element it's reacting with..

Explanation:

if the another element requires less energy to loose electron then zinc will become negatively charged and hence becomes acidic radical..

normally if it is reacting with element with valency 4 and Atomic number less than it(Ti,Si,C) then it will lose electron and gain positive sign and henve becomes basic radical..

Answer:

D Sunlight

Explanation:

Hoped that helped :)

Answer:

A is the answer it is correct

Answer:

A

Explanation:

trust me

Answer:

3 ÷1,800

= 600 N

Thus the force needed is 600N