naphthalene, the active ingredient in one variety of mothballs, is an organic compound that contains carbon and hydrogen only. complete combustion of a 20.10 mg sample of naphthalene in oxygen yielded 69.00 mg of co2 and 11.30 mg of h20. determine the molecular formula of naphthalene

Answer:

covalent

Explanation:

Kinetic energy is the energy of an object that it has because of it's movement. For example: That windmill has kinetic energy.

In SI Units, kinetic energy is measured in joules. Hope this helps!

A mineral is a naturally occurring inorganic solid element or compound. It can have different properties that depend on its chemical composition and crystal structure.

A mineral can be classified as either extrusive or intrusive and may consist of interlocking or bonded grains of matter. Sand grains that are cemented together to form rocks are not considered minerals. A mineral is a naturally occurring inorganic solid element or compound. It can have different properties that depend on its chemical composition and crystal structure. A mineral can be classified as either extrusive or intrusive and may consist of interlocking or bonded grains of matter. Extrusive minerals are formed on the earth's surface from molten lava that has cooled and solidified. Extrusive minerals have a fine-grained texture because they cool quickly on the surface. Intrusive minerals are formed beneath the earth's surface from molten magma that has cooled and solidified. Intrusive minerals have a coarse-grained texture because they cool slowly beneath the surface. The interlocking or bonded grains of matter in a mineral are called crystals. The crystals in a mineral are arranged in a repeating pattern that gives the mineral its characteristic shape and structure. The properties of a mineral, such as color, luster, and hardness, depend on the chemical composition and crystal structure of the mineral. Minerals are important in our daily lives and are used in many industries such as construction, electronics, and jewelry making. For example, quartz is used in electronics because of its piezoelectric properties, which allow it to convert electrical energy into mechanical energy. Calcite is used in construction because it is a common constituent of cement and concrete. Diamond, the hardest mineral, is used in jewelry making because of its brilliance and durability.

In conclusion, a mineral is a naturally occurring inorganic solid element or compound that can be classified as either extrusive or intrusive and may consist of interlocking or bonded grains of matter. The properties of a mineral depend on its chemical composition and crystal structure. Minerals are used in many industries and are important in our daily lives.

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The sum of 3(3)/(8) and 6(1)/(2) is 5(5)/(8), which is a mixed number representing 5 whole units and 5/8 of another unit.

To find the sum of mixed numbers, we need to add the whole numbers and the fractions separately. Add the whole numbers: 3 + 6 = 9

Add the fractions: For the fractions 3/(8) and 1/(2), we need to find a common denominator. The least common multiple of 8 and 2 is 8.

Converting 3/(8) to have a denominator of 8:

3/(8) = (3 x 1)/(8 x 1) = 3/(8)

Converting 1/(2) to have a denominator of 8:

1/(2) = (1 x 4)/(2 x 4) = 4/(8)

Now, we can add the fractions:

3/(8) + 4/(8) = (3 + 4)/(8) = 7/(8)

Combine the whole numbers and fractions:

The whole numbers sum was 9 and the fractions sum was 7/(8). We can write this as a mixed number by dividing the numerator (7) by the denominator (8). The quotient is 0 with a remainder of 7. Therefore, the mixed number is 0(7)/(8), which can be simplified to 7/(8).

Therefore, sum of 3(3)/(8) and 6(1)/(2) is 5(5)/(8).

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Primary  treatment is a physical process that removes large particles with a screen.

The primary treatment removes the organic and the inorganic solid by the sedimentation process. It removes the material that is floated by the skimming.  The primary treatments are the filtration and the sedimentation which is used to remove the waste from the water and remove the large and the small particles.

It is initially removed by the filtration and it removes the floating material and by the sedimentation process the grit is removed. The Pre-treatment will involves initial removal of the large and it will be easily removed from the wastewater.

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Answer: this looks like your homework

Explanation:if you want help you are going to have to ask a specific question instead of giving people your homework.

Answer:

Honestly I would search this up maybe there might be a pdf with the answers. Sorry chemistry isn't my thing:(

Explanation:

The gas should not subjected to excessive pressure and that fire extinguishers are always handy.

The Haber process is the process that could be used for the production of ammonia gas. The process involves the bringing together of the hydrogen and the oxygen gas under pressure. We know that this reaction is favored when the pressure is increased and the temperature is lowered. The temperature has to be lowered because the process is an exothermic reaction and could only move forward at lower temperature.

The word exothermic means that heat is given out in the process. The heat of the reactants is greater than the heat of the products. We know that risk of explosion is greater for an exothermic gas under pressure.

Given that methane is a highly combustible gas and it is transported under pressure, we must ensure that the gas is not subjected to excessive pressure and that fire extinguishers are always handy.

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Answer: not sure either. not sure what exactly your asking because the wording is weird. (no offense)

The correct order of the increasing polarity of the analyte functional group isEthers < Esters.

The given statement is "Polarities of analyte functional group increase in the order of hydrocarbon ethers < esters."  The order of polarities of functional groups is the order of their increasing polarity (i.e., less polar to more polar) based on their electron-donating or withdrawing ability from the rest of the molecule.Polarity of analyte: The analyte's polarity is directly proportional to the dipole moment of the functional group, which is associated with a difference in electronegativity between the atoms that make up the functional group.The electronegativity of an element is its ability to attract electrons towards itself. The greater the difference in electronegativity between two atoms, the more polar their bond, and hence the greater the polarity of the molecule.

To find the correct order of the increasing polarity of the analyte functional group, let's first compare the two groups: hydrocarbon ethers and esters. Here, esters have a carbonyl group while ethers have an oxygen atom with two alkyl or aryl groups. The carbonyl group has more electronegative oxygen, which pulls electrons away from the carbon atom, resulting in a polar molecule. On the other hand, ethers have a less polar oxygen atom with two alkyl or aryl groups, making them less polar than esters. Therefore, the correct order of the increasing polarity of the analyte functional group isEthers < Esters.

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The process in which the reactants get converted into products is defined as the chemical reaction. The nature and identity of products will be totally different from the reactants.

The replacement reaction also called the displacement reaction in which an atom or groups of atoms are displaced by another atom in a molecule. In a single replacement reaction one element is replaced by other in the compound.

The reaction between chlorine and sodium bromide to form sodium chloride and bromine is an example for replacement reaction.

Cl₂ (aq) + 2NaBr (aq) → 2NaCl (aq) + Br₂ (aq)

Here 'Cl' is more reactive than 'Br', so it replaces 'Br' in NaCl.

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The amount of neutrons varies, but they all have the same number of protons.

They are known as isotopes. Isotopy refers to the presence of two or more atoms of the same element that have the same atomic number but have distinct masses as a result of the varied numbers of neutrons present in their respective nuclei.

The quantity of protons in an atom determines its atomic number. It is equal to the number of electrons for a neutral atom.

The quantity of protons and neutrons in an atom is known as the mass number.

These are all 16-atomic-number isotopes.

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The heat required to change 500 mL of water at 100°C to steam at 100°C is 1.13 ×10⁶J.

The latent heat can be defined as the amount of heat required during the phase change of a substance.

The mathematical formula for latent heat can be expressed as:

Q = mL

Given, the mass of water, m = 500 ml = 500 g

The change in temperature of the water, ΔT = 100 - 100 = 0

The latent heat of water, C = 2260 J/g

The  heat required to change the temperature of the water can be calculated as:

Q = m ×L

Q = 500 × 2260

Q = 1.13 ×10⁶J

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\(\\ \sf\longmapsto No\:of\;moles=\dfrac{Given\:mass}{Molar\:mass}\)

\(\\ \sf\longmapsto No\:of\:moles=\dfrac{31.99}{32}\)

\(\\ \sf\longmapsto No\:of\:moles\approx 1\)

#NaCl

\(\\ \sf\longmapsto No\:of\:moles=\dfrac{176.8}{58.5}\)

\(\\ \sf\longmapsto No\;of\:moles=3mol\)

Answer:

The Fox is at the top of the food chain; so, the other animals could increase in population and the fox could return

Moderate drought is an illustration of a shift that the prairie ecosystem was able to adapt to and return to balance. The amount of water that is accessible to both plants and animals reduces during a drought, which affects both plant development and the number of herbivores.

A forest ecosystem can recover from fire because diverse creatures play distinct functions in various ways and locations. Many species' dispersed habitats enable them to resprout or grow from seeds that are ignited by fire, protecting populations from being entirely wiped off.

Ecosystems are living things that are susceptible to a wide range of abiotic and biotic perturbations brought on by the forces of nature and/or human activities.

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Answer:

B. Na2SO3 is one of the reactants

Explanation:

Answer: B. Na2SO3

Explanation:

A reactant is always left to the arrow and is a substance that is at the start of a chemical reaction (before the reaction / change occurs)

Answer:

Caustic soda

Explanation:

The fractional distillation of air is carried out on liquid air. Before air is liquified, the carbon dioxide content of air is removed using caustic soda. The air is then compressed to a pressure of about 200 atm, sudden expansion of the gas leads to cooling. The process continues until air becomes liquid at  -200°C.

Fractional distillation of liquid air usually produces nitrogen and oxygen as major products. nitrogen in obtained first since it has a lower boiling point than oxygen. The gases are then dried, compressed and stored in cylinders.

Answer:

Zebra- consumer

Tiger- consumer

Worm- decomposer

Tree-Producer

Molded bread- decomposer

Plant- producer

Answer:

Explanation:

Dandelion plant produces light and feathery seeds .

Zebra consumes / eats grass so it is a consumer .

Mass defect is define as the difference between nuclear mass and the mass of its components.

As the name suggested that defect in mass of any substance given idea about the mass defect and it will be define as the difference between the atomic mass of an atom and sum of the masses of all constitute particles present inside the nucleus.

Hence it is the difference between nuclear mass and the mass of its

components.

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Liquids, unlike solids and gases, are extremely volatile. Liquids shape and volume can be changed by temperature, pressure, and external forces, such as magnetic fields.  

The most interesting characteristic of liquids is that they can change shape and volume with ease.In terms of volume, the molecules in liquids are more packed together than in gases but less dense than in solids. A liquid's shape can be altered by a variety of factors, including temperature, pressure, and external forces such as magnetic fields, but its volume is also affected. To alter the shape and volume of a liquid, the following techniques are employed:Changing Shape: The molecules in a liquid are free to move, but they are also held together by intermolecular forces, which cause them to be closely packed. When a liquid is heated, the energy supplied to it causes the intermolecular forces between molecules to be reduced. As a result, the molecules move more freely, causing the liquid to expand. The opposite is true when a liquid is cooled. When a liquid is subjected to external forces such as pressure, its shape changes as the molecules attempt to conform to the shape of the container holding it.

Liquids are interesting substances. They are unique from solids and gases, as they can easily change shape and volume. The reason for this is that the molecules in liquids are not packed together as tightly as in solids but more packed together than in gases. Liquids' shape and volume can be changed by temperature, pressure, and external forces, such as magnetic fields. When we increase the temperature of a liquid, the intermolecular forces between molecules are reduced, and the molecules begin to move more freely. As a result, the liquid will expand. When a liquid is cooled, the opposite is true. The intermolecular forces will increase, and the liquid will contract. An external force, like pressure, will change the shape of a liquid. The molecules in the liquid will try to conform to the shape of the container that holds it.

In conclusion, liquids are unique substances that can change shape and volume. Temperature, pressure, and external forces such as magnetic fields can all change a liquid's shape and volume. When a liquid is heated, it expands, and when it is cooled, it contracts. External forces such as pressure will change the shape of the liquid as the molecules try to conform to the container holding them.

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Alpha-ketoglutarate, a molecule, controls the Krebs cycle, which controls the organism's general pace of the citric acid cycle (AKG).

The net synthesis of a ketoglutarate from pyruvate involves the conversion of pyruvate to phosphoenolpyruvate (PEP) through the enzyme pyruvate carboxylase, followed by the conversion of PEP to oxaloacetate (OAA) through the enzyme phosphoenolpyruvate carboxy-kinase. Oxaloacetate is then converted to ketoglutarate (KG) through the enzyme glutamate dehydrogenase. This reaction does not deplete any citric acid cycle intermediates since all three enzymes are independent of the citric acid cycle. In addition, since the three enzymes are all reversibly catalyzed, the final product (KG) can be converted back to the original starting material (pyruvate). It is a glutamate and glutamine supply as well as a nitrogen scavenger, which promotes muscle protein synthesis and inhibits muscle protein degradation.

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Answer:

5.85 g C2H6O has more carbon

Explanation:

Weight of carbon in  4.71 g of C6H12O6

\(4.71 * 12.01\\56.5671\\\) grams

Weight of carbon in  5.85 g of C2H6O

\(5.85 * 12.01\\70.259\\\) grams

Hence, 5.85 g C2H6O has more carbon

Approximately 18.4832 mL of 0.250 M NaOH is required to neutralize 30.4 mL of 0.152 M HCl.

To determine the volume of 0.250 M NaOH required to neutralize 30.4 mL of 0.152 M HCl, we can use the concept of stoichiometry and the balanced chemical equation for the neutralization reaction between NaOH and HCl:

NaOH + HCl -> NaCl + H2O

From the balanced equation, we can see that the stoichiometric ratio between NaOH and HCl is 1:1. This means that for every mole of NaOH, we require an equal number of moles of HCl to neutralize.

First, let's calculate the number of moles of HCl present in the given volume:

Moles of HCl = concentration of HCl * volume of HCl

= 0.152 M * 30.4 mL

= 4.6208 mmol (millimoles)

Since the stoichiometric ratio is 1:1, the number of moles of NaOH required to neutralize the HCl is also 4.6208 mmol.

Now, let's calculate the volume of 0.250 M NaOH needed to contain 4.6208 mmol:

Volume of NaOH = (moles of NaOH) / (concentration of NaOH)

= 4.6208 mmol / 0.250 M

= 18.4832 mL

Therefore, approximately 18.4832 mL of 0.250 M NaOH is required to neutralize 30.4 mL of 0.152 M HCl.

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A second source of variation in a population is genetic recombination through sexual reproduction. During meiosis, homologous chromosomes exchange genetic material through crossing-over, leading to new combinations of alleles in the offspring.

Additionally, independent assortment of chromosomes during meiosis leads to different combinations of alleles being inherited together. These processes can result in new combinations of traits in the offspring, leading to genetic diversity within a population.

This diversity is essential for adaptation to changing environmental conditions, as some individuals may possess traits that allow them to survive and reproduce more successfully than others. Over time, natural selection acts on this variation, leading to the evolution of new species.

Genetic recombination is a process that occurs during sexual reproduction, in which genetic material from two parents is combined to form a unique offspring. This process generates genetic diversity within a population, allowing for the development of different traits and adaptations.

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The issues with the way the procedure was performed include not performing the reaction on ice, adding the acids all at once, not performing the reaction at reflux, and using sulfuric acid when only nitric acid should be used. These issues can affect the outcome of the reaction and may lead to undesired results.

Based on the given options, there are multiple issues with the way the procedure was performed:

1. The reaction was not done on ice: Performing the reaction on ice is important in some cases to control the reaction rate and prevent unwanted side reactions. Not doing so can lead to unexpected results or low yields.

2. The acids were added all at once: Adding the acids all at once can cause a rapid and uncontrolled reaction. It is often preferable to add them slowly or in a specific order to ensure proper mixing and control of the reaction conditions.

3. The reaction was not performed at reflux: Refluxing is a technique used to maintain a constant temperature during a reaction. It involves heating the reaction mixture and condensing and returning any evaporated solvents or reagents back into the reaction vessel. Not performing the reaction at reflux can lead to variations in temperature and affect the reaction outcome.

4. Only nitric acid should be used, no sulfuric acid: The procedure specifies that only nitric acid should be used, while sulfuric acid should not be used. This could be because sulfuric acid can have adverse effects on the reaction or result in unwanted side reactions.

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The firing of a single neuron is best described as the transmission of an electrical signal, known as an action potential, along the length of the neuron.

This signal is initiated when the neuron receives sufficient stimulation or input from its dendrites and cell body. Once the threshold for firing is reached, an action potential is generated and travels down the axon of the neuron, leading to the release of neurotransmitters at the synaptic terminals. The firing of a single neuron involves a series of events. When the neuron receives input from other neurons or sensory stimuli, it undergoes a process called depolarization. This occurs when the membrane potential of the neuron becomes less negative, usually due to the influx of positively charged ions, such as sodium ions.

Once the depolarization reaches a certain threshold, an action potential is triggered. During an action potential, the depolarization rapidly propagates along the length of the neuron's axon. This is achieved through the opening and closing of ion channels, which allow the exchange of ions across the cell membrane. The action potential travels in a wave-like manner, causing a temporary reversal of the membrane potential from negative to positive.

This electrical signal allows the neuron to transmit information over long distances. Upon reaching the end of the axon, the action potential triggers the release of neurotransmitters from synaptic vesicles into the synapse, which is the junction between the neuron and its target cell. The released neurotransmitters then bind to receptors on the target cell, leading to the transmission of the signal to the next neuron or effector cell. Overall, the firing of a single neuron involves the generation and propagation of an action potential, which allows for the transmission of electrical signals and communication within the nervous system.

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