HELP!!! Will award crown, points, and thanks

Answer:

(True) The answer to that is yes, global warming is a hotly debated topic.

Explanation:

As a matter of political controversy, global warming is often viewed from different political perspectives. Which is why it is still an issue. (In 1988, global warming became a topic of discussion.) A number of climate change-related phenomena are occurring due to climate change, including rising temperatures, droughts and wildfires, changing precipitation patterns, glaciers melting, and rising sea levels.

Hope this helps! :D

Answer:

Explanation:

It's water vapor. There is enough heat present to get the water to boil but not enough to break it into its chemical components (oxygen and hydrogen), so the answer is D.

When sufficient pressure is applied to the hexagonal open structure of ice, the hydrogen bonds between water molecules are compressed and begin to break.

This results in the formation of a denser form of ice known as ice II, which has a different crystal structure than the original hexagonal ice. If even more pressure is applied, ice III, ice IV, and so on can form, each with its own distinct crystal structure. Interestingly, at extremely high pressures, ice can even transform into a non-crystalline form called amorphous ice. This transformation from hexagonal ice to denser forms is an example of a phase transition, which is a common phenomenon in many materials. Understanding the behavior of water and ice under different conditions is important for a wide range of applications, including climate modeling, materials science, and cryogenics.

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If the same antibiotic were used again, the resistant bacteria would survive and reproduce, leading to an infection that is unaffected by the antibiotic. Hence, the answer is option a

Bacteria are microorganisms that can be found inside and outside the body. While some bacteria are good, most of them cause diseases and infections.

Antibiotics are drugs solely used to kill or stop the spread of bacteria. When antibiotics are overused, a small population of bacteria can survive it and start to reproduce, leading to a population of resistant bacteria that don't respond to the antibiotic designed to kill them. This is called antibiotic resistance.

Antibiotic resistance can be avoided by taking antibiotics only when it is needed and only when prescribed by a doctor or pharmacist.

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A chemical production company annually produces 500 million pounds of the chemical maleic anhydride using four different reactors. Each reactor can be run on only one of the four settings.

This means that each reactor contributes to the production process by running on a specific setting. The specific settings may vary depending on factors such as temperature, pressure, or other variables relevant to the production of maleic anhydride.

By utilizing all four reactors and their respective settings, the company can achieve the desired annual production of 500 million pounds. Each reactor plays a crucial role in the overall process, ensuring that the necessary quantity of maleic anhydride is produced efficiently and effectively.

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Answer:

it is D

Explanation:

because it is a substance that participants in a chemical reaction.

Approximately 19.68 liters of propane is required to produce 75.3 liters of water according to the given reaction.

To find out how much propane \((C_3H_8)\) is needed to produce 75.3 liters of water \((H_2O)\) according to the reaction described, we must first balance the equation:

\(C_3H_8 + 5O_2 --- > 3CO_2 + 4H_2O\)

The balanced equation shows that for every 4 moles of water produced, 1 mole of propane is consumed. As a result, we must first determine the moles of water and then use stoichiometry to convert those moles to moles of propane.

Given:

Volume of water = 75.3 liters

To calculate the moles of water, we can use the ideal gas law:

PV = nRT

We can rearrange the equation to find the value of n (moles), assuming the gases are at the same temperature and pressure:

n = PV / RT

Where:

P is the pressure (in atm)

V is the volume (in liters)

R is the ideal gas constant (0.0821 L·atm/(mol·K))

T is the temperature (in Kelvin)

Let's assume that the temperature is always 298 Kelvin or 25 °C. Additionally, since the question doesn't specify the pressure, we'll assume it's 1 atm, which is normal atmospheric pressure.

We can calculate the moles of water using these values:

n\((H_2O)\) = (75.3 L * 1 atm) / (0.0821 L·atm/(mol·K) * 298 K) = 3.229 moles

The stoichiometry of the balanced equation states that for every 1 mole of propane used, 4 moles of water are formed. As a result, the required moles of propane can be determined as follows:

n\((C_3H_8)\) = (3.229 moles \(H_2O\)) / (4 moles \(C_3H_8\)) = 0.807 moles \(C_3H_8\)

Now, we can convert the moles of propane to volume using the ideal gas law:

V = nRT / P

We can determine the amount of propane using the same temperature and pressure as before:

V\((C_3H_8)\) = (0.807 moles * 0.0821 L·atm/(mol·K) * 298 K) / (1 atm) ≈ 19.68 liters

Therefore, approximately 19.68 liters of propane is required to produce 75.3 liters of water according to the given reaction.

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Answer:

.

Explanation:

The most likely purpose of the purchase of a Reflected Ultraviolet Imaging System (RUVIS) device by the local police department is: to find and process more fingerprints.

Digital forensics can be defined as a type of technology which is designed and developed to gather, access, and monitor the activities of a particular user or users on a computer system, networks, and other devices over the Internet such as a Reflected Ultraviolet Imaging System (RUVIS).

Generally speaking Reflected Ultraviolet Imaging System (RUVIS) simply refers to an optical touchless instrument that is designed and developed to be used by crime scene search investigators and the police for the detection of latent fingerprints without making use of any of the following chemical substances:

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The speed of the particles rises with the temperature of the solid, liquid, or gas. The particles slow down with decreasing temperature.

A liquid can turn into a solid if it is cooled down far enough.

The average kinetic energy of the molecules falls as a liquid cools.

The liquid eventually turns into a solid when the quantity of heat removed is sufficient to cause the molecules to be attracted to one another.

Freezing is the process of transitioning from a liquid to a solid.

It loses thermal energy when the liquid cools. Its constituent particles therefore decelerate down and converge.

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Reverend Thomas Robert Malthus initially put forth the Malthusian hypothesis of population growth in 1798, which predicts that an unrestrained population would surpass its food supply.

According to the hypothesis, sickness, starvation, war, and other calamities will eventually ensue when the food supply cannot keep up with the increase in the human population. Malthus established the Statistical Society of London and was a well-known statistician and political economist.

Thomas Robert Malthus famously prophesied in 1798 that if human population expansion outpaced food production, short-term advances in living standards would inevitably be undermined and pull living standards back towards subsistence.

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At Location C, nightfall is experienced by the Northern Hemisphere. At Location C, the Northern Hemisphere is inclined away from the Sun.

The Northern Hemisphere tilts away from the Sun at its greatest angle around December 21. We experience the least amount of daylight at this time of year, which is known as the northern winter solstice.

The Earth's axis is tilted most closely towards the sun twice a year during what are known as the solstices. The longest day occurs in the hemisphere that is slanted most towards our star, whereas the longest night occurs in the hemisphere that is tilted away from the sun.

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Answer:

I’ll help what’s the question

Explanation:

Answer:

Aight wats da question

Explanation:

Answer:

3

Explanation:

begining 0's are never significant

all numbers 1-9 are always significant

ending 0's are only significant when there is

a decimal.

Answer:

Heat

Explanation:

Answer:because they run out of energy when it is transferred and to other objects, or their kinetic energy

Explanation:

Answer: B

Explanation: I just did it

The equation for calculation of rate constant from initial concentration will be k= rate / \([A^{m}] [B^{n}]\)

The proportionality variable in the expression represents the link between both the rate of a reaction as well as the concentrations of the reacting components often called the rate constant, sometimes specific rate constant.

A chemical reaction is represented by a word equation that uses the identities of the substance present.

The equation for calculation of rate constant from initial concentration will be k= rate / \([A^{m}] [B^{n}]\).

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Answer: The number of neutrons will increase as we move from left to right in a periodic table.

Explanation:

Atomic number is equal to the number of protons.

Mass number is the sum of number of neutrons and number of protons.

As we move from left to right, both the atomic number and mass number increases.

For example: As we move from Lithium to berrylium to boron to carbon to nitrogen to oxygen to fluorine to neon , the number of neutrons increase from 4 to 5 to 6 to 6 to 7 to 8 to 10 to 10.

Thus the number of neutrons will also increase as we move from left to right in a periodic table.

What happens during a fission reaction is that matter is converted to energy.

We define the term fission as the kind of reaction that involves the breaking of the nucleus of an atom and then there would be a release of energy. There are various kinds of nuclear reactions that we have but the most common types of nuclear reactions are the fission and the fusion reaction.

In the fusion reaction we have the combination of two or more lighter nucleus so as to produce a heavier nucleus while in the case of the fission reaction the nucleus would have to be  broken up so that energy can be released in the process.

Thus, we see that the total mass on the left hand side may not be the same as the total mass on the left hand side because some of the mas is converted to energy.

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Missing parts;

Which change occurs during a nuclear fission reaction?

(1) Covalent bonds are converted to ionic bonds.

(2) Isotopes are converted to isomers.

(3) Temperature is converted to mass.

(4) Matter is converted to energy

The number of moles of carbon, C, in the original sample is 0.83 moles.

Combustion analysis allows us to determine the composition of a compound by measuring the amounts of carbon dioxide and water produced. In this case, 7.00 g of the unknown compound produced 10.3 g of carbon dioxide and 4.20 g of water. To calculate the number of moles of carbon in the sample, we need to find the moles of carbon dioxide formed during combustion.

We can start by converting the mass of carbon dioxide into moles using its molar mass. The molar mass of carbon dioxide (CO2) is approximately 44.01 g/mol (12.01 g/mol for carbon and 16.00 g/mol for oxygen). Dividing the mass of carbon dioxide (10.3 g) by its molar mass gives us the number of moles: 10.3 g CO2 / 44.01 g/mol = 0.234 mol CO2.

Since carbon dioxide (CO2) has a 1:1 mole ratio with carbon (C) in the combustion reaction, we can conclude that there are 0.234 moles of carbon in the original sample.

Combustion analysis is a crucial technique used in chemistry to determine the elemental composition of a compound. By quantifying the amounts of carbon dioxide and water produced during combustion, it is possible to calculate the number of moles of carbon, hydrogen, and oxygen in the original compound.

This information can then be used to deduce the molecular formula of the unknown compound. By utilizing the principles of stoichiometry and the molar masses of the involved elements, scientists can derive valuable insights into the composition and structure of various organic compounds.

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Answer:

It is a metal

Explanation:

The relative thermodynamic stability of organic molecules that are isomeric can be deduced from heats of combustion, making option D the right response. Isomeric organic molecules benefit from this as well.

The quantity of heat created by the combustion of a specific amount of a substance, usually a fuel or food; see food energy—is its heating value, also known as its energy value or calorific value. When a substance burns completely with oxygen under normal circumstances, the amount of energy produced as heat is measured as the calorific value. Organic substances in chemistry are essentially any chemical molecules that have carbon-hydrogen bonds. Millions of organic compounds are known because carbon can catenate, or join with other carbon atoms to form chains.

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Answer:

sulphur

Explanation:

Therefore the correct option is d. Sulphur atom has the weakest attraction for the electrons in a bond with an H atom.

The manufacture of ammonia from nitrogen and hydrogen is an exothermic reaction, meaning that it releases heat. Therefore, the temperature at which the reaction takes place can affect the yield of ammonia.

According to the Le Chatelier's principle, if a stress is applied to a system in equilibrium, the system will adjust to counteract the stress and reach a new equilibrium state. In the case of the manufacture of ammonia, increasing the temperature would be a stress on the system.

The forward reaction of nitrogen and hydrogen combining to form ammonia is exothermic, meaning that it releases heat. Therefore, increasing the temperature will cause the equilibrium to shift towards the reverse reaction, which is endothermic, meaning that it absorbs heat. This results in a decrease in the yield of ammonia.

A lower temperature would give a greater yield of ammonia in the manufacture of ammonia from nitrogen and hydrogen. This is because the exothermic forward reaction will be favored, resulting in a higher yield of ammonia.

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(i) The colliding molecules should have energy equal to or greater than activation energy.

(ii) The colliding molecules should have proper orientation.

If the colliding reactant molecules have energy less than activation energy, then the collision will NOT be an effective collision

What is energy?

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(a) The two factors that determine whether an effective collision between molecules of A and B results in a reaction are the energy of the collision and the orientation of the molecules in the collision.

What is collision?

Collision is an event in which two or more objects or particles come into contact with each other. Collisions occur in everyday life and are a fundamental part of physics. Collisions can be elastic or inelastic, depending on the energy of the objects involved.

(b) A decrease in temperature would decrease the rate of the reaction shown above because it would decrease the average kinetic energy of the molecules.

(c) The rate law expression that would result if the reaction proceeded by the mechanism shown below A+B → [AB] (fast) [AB] + 8C+D (slow) is: Rate = k[A][B].

(d) A catalyst increases the rate of a reaction by lowering the activation energy barrier, making it easier for the molecules to react. However, the catalyst does not change the value of the equilibrium constant for that reaction because it does not affect the thermodynamic properties of the reaction.

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Answer:

Strontium

Explanation:

In the periodic table, an element with two (2) valence electrons is found on group 2. Group 2 is a group of the periodic table that harbors element called ALKALINE EARTH METALS. As the name implies, they are metals that possess shiny and solid characteristics at room temperature.

Group 2 elements include the following: Beryllium (Be), Magnesium (Mg), Calcium (Ca), Strontium (Sr), barium (Ba), and radium (Ra). Based on the descriptive information in this question, the element being described is a GROUP 2 element. Based on the elements in the option, only STRONTIUM (Sr) is a group 2 element.

Answer:

sunlight, carbon dioxide, and water :)