which model shows a moleclue of a substance that is made up of three elements

Answer:

lWhich compound can inadvertently be created through the distillation process and can be fatal if consumed?

Methanol

A nitrogen atom in N2O3 has an oxidation number of +3.

The unknown nitrogen oxidation number can be given a variable (x) to ascertain its oxidation number. Since oxygen has an oxidation number of - 2 and there are three oxygen particles in N₂O₃, the complete negative charge from oxygen is (- 2) × 3 = - 6.

The total charge of a compound is equal to the sum of its oxidation numbers. Since the compound in question is neutral, the sum of the oxidation numbers must be zero in this instance.

2(N) + 3(O) = 0

2x + (-6) = 0

2x = 6

x = 3

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Answer:

False

Explanation:

This is because the electrical circuit, where the electrical energy is converted into another form of energy, e.g. lightbulb converts electrical energy into light and heat, an electric bell converts the electrical energy into sound and heat.

False.

The statement a load in a circuit transforms the light energy into electrical energy is False.

Any device which transforms the electrical energy into other forms of energy, like light energy, sound energy, etc is called an electric load in the circuit.

The type of kinetic energy caused by moving electric charges is known as electrical energy. The alternating current, direct current, and batteries provide electrical energy.

So, the load transforms the electrical energy into other forms like light energy, sound energy, etc.

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Answer:

The law of constant proportion states that the percentage of each compound will stay constant regardless of the source size.

In other words, since 11.19% + 88.81% = 100%, in a 100 gram sample, these percentages will stay the same. In this case, 100% is "equal" to 100 grams.

So, 11.19 grams hydrogen and 88.81 grams oxygen will be present in a 100 gram sample of pure water.

Water does  not stick to the leaves of the plant  owing to the fact that the leaves has a waterproof cuticle.

We know that the leaves are the parts of the plant that are involved in photosynthesis. Photosynthesis is the process by which green plants produce their own food in the presence of sunlight and chlorophyll. We know that the leave has an outer protective covering.

The tissue that plays this outer covering of a plant for is the  epidermis and its waxy cuticle. It prevents damage to the plant.

Water does  not stick to the leaves of the plant  owing to the fact that the leaves has a waterproof cuticle.

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When \(CO_{2}\) and \(H_{2} CO_{3}\) are both horizontal lines, the rate of the forward reaction is the same as the rate of the reverse reaction. The reaction is occurring at equilibrium, with no net change in the concentrations of reactants and products over time.

When the concentration of carbon dioxide \(CO_{2}\) and the concentration of carbonic acid \(H_{2} CO_{3}\) are both horizontal lines, it indicates that their concentrations remain constant over time. In such a scenario, the rate of the forward reaction is the same as the rate of the reverse reaction. A horizontal line on a concentration-time graph suggests that the concentrations of the reactants and products are not changing, implying that the reaction has reached equilibrium. At equilibrium, the rate of the forward reaction equals the rate of the reverse reaction. This is a fundamental principle of chemical equilibrium, described by the principle of microscopic reversibility.

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The actual yield of iron is 0.223 mol Fe.

The theoretical yield of iron is 0.684 mol Fe.

The percent yield is 32.6%.

The balanced chemical equation is Fe₂O₃ + 3C -> 2Fe + 3CO.

First, we need to calculate the theoretical yield of Fe. We know that 0.342 mol Fe₂O₃ is used, and the molar ratio between Fe₂O₃ and Fe is 1:2 (from the balanced equation). Therefore, the theoretical yield of Fe is:

0.342 mol Fe₂O₃ x (2 mol Fe / 1 mol Fe₂O₃) = 0.684 mol Fe

Next, we need to calculate the actual yield of Fe. We know that 12.5 g Fe was produced, and we can convert that to moles using the molar mass of Fe:

12.5 g Fe x (1 mol Fe / 55.845 g Fe) = 0.223 mol Fe

Finally, we can calculate the percent yield:

percent yield = (actual yield / theoretical yield) x 100
percent yield = (0.223 mol Fe / 0.684 mol Fe) x 100
percent yield = 32.6%

Therefore, the actual yield of Fe in moles is 0.223 mol, the theoretical yield of Fe in moles is 0.684 mol, and the percent yield is 32.6%.

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Answer:The earths plates shifting

Explanation: The movement releases stored-up 'elastic strain' energy in the form of seismic waves, which propagate through the Earth and cause the ground surface to shake.

2-bromo-1-chloro-4-nitrobenzene is synthesized from benzene in the following sequence.

Chlorination of benzene:

This is the halogenation reaction of benzene. In this step, benzene is reacted with chlorine gas in the presence of a Lewis acid (i.e. FeCl3). This leads to the formation of chlorobenzene as shown in the red step below.

Nitration of chlorobenzene:

The chlorine atom of benzene has an ortho-paradirecting effect. Nitration of chlorobenzene thus yields para-nitrochlorobenzene as shown in the blue step below.

Bromination of 1-chloro-4-nitrobenzene:

Bromination is carried out in this step by reacting bromine in the presence of a Lewis acid. The chlorine, which is ortho-paratropic in nature, and the nitro group, which is metatropic in nature, orient the incoming Br+. (electrophilic) to the desired location. Therefore, 2-bromo-1-chloro-4-nitrobenzene is synthesized in good yield.

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Answer:

30 mols of water.

Explanation:

This really does not require that you do any calculations but a short one in your head.

8 mols of HNO3 ====> 4 mols of water.

In other words all you need do is divide the number of mols of HNO3 by 2

60 mols of HNO3 will produce 30 mols of water. If you have a teacher who is a slave to more formal ways of things,, then set up a proportion.

8 HNO3 / 4 H2O =====> 60 mols HNO3 / x mols water

8/4 ===> 60 / x            Cross Multiply

8x = 4*60                     Combine the right

8x = 240                       Divide by 8

8x/8 = 240/8

x = 30

In a methyl tert-butyl ether sample that contains 69.0 moles of hydrogen, there are 5.75 moles of oxygen.

Methyl tertiary-butyl ether (MTBE), also known as methyl tert-butyl ether and tert-butyl methyl ether, is an organic chemical with the structural formula (CH3)3COCH3. MTBE is a colorless, flammable liquid that is only weakly soluble in water. MTBE is primarily a fuel additive that is mixed with gasoline to improve knock resistance and cut back on unwelcome emissions.

Methanol and isobutylene combine chemically to produce MTBE. Natural gas, especially methane, contains a variety of light hydrocarbons that steam reforming can transform into carbon monoxide and hydrogen. The resultant gases then continue to react in the presence of a catalyst to produce methanol. There are numerous ways to make isobutylene.

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According to De Sherbinin et al. (2011), when temperature increases, it can have various effects on different aspects. These effects can be observed in both natural and human systems, leading to significant consequences.

De Sherbinin et al. (2011) conducted research to understand the impacts of rising temperatures. As temperature increases, it influences numerous components of the environment. In natural systems, higher temperatures can lead to the melting of glaciers, changes in precipitation patterns, and alterations in ecosystems.

These changes affect biodiversity, water resources, and the overall functioning of ecosystems. In human systems, rising temperatures can have wide-ranging effects such as increased heat-related illnesses, changes in agricultural productivity, shifts in disease patterns, and social and economic disruptions.

Understanding these impacts is crucial for addressing climate change and developing effective adaptation strategies.

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Yes, the IR spectrum allow you to confirm that the structure of the product is a combination of the two reactants.

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Answer:

ano pong topik po yan

Answer:

101.62 grams of water is given o when 62.1 g of propane burns.

Explanation:

Propane gas (C₃H₈) burns with oxygen gas and products carbon dioxide gas and liquid water. The balanced reaction is:

C₃H₈ + 5 O₂ → 3 CO₂ + 4 H₂O

By stoichiometry, the following amounts of moles of each compound participate in the reaction:

Being the molar mass of each compound:

By stoichiometry, the following mass quantities of each compound participate in the reaction:

Then you can apply the following rule of three: if by stoichiometry 44 grams of propane produces 72 grams of water, 62.1 grams of propane how much mass of water does it produce?

\(mass of water=\frac{62.1 grams of propane*72 grams of water}{44 grams of propane}\)

mass of water= 101.62 grams

101.62 grams of water is given o when 62.1 g of propane burns.

Answer:

Energy of an electron is quantinized means the electrons can possess only specific individually separated values.

These energy levels are stable and are stationary along with different energy value.  The electron remains in the state until energy is absorbed or released.

The electrons absorb energy when it moves from lower energy state to higher energy state. The electrons lose energy when it moves from higher energy state to lower energy state and thus emit radiations corresponding to the energy gap and is called as quanta.

Explanation: Pottasium reacts with water vigorously and the reation is exothermic. The heat released causes the hydrogen released to ignite.

Answer: Pottasium reacts with water vigorously and the reation is exothermic. The heat released causes the hydrogen released to ignite.

Answer:I believe it forced convections

Explanation:convection is the circular motion that happens when warmer air or liquid makes something less dense.

Answer:

how y'all doinnn

Explanation:

byyeee

Answer:

You confirm the units involved, which would make you to understand the factors required.

Explanation:

Conversion of units is a process in which a given unit of a physical quantity is accurately transformed into another. Example, when the mass of a substance in grams is converted to kilograms. Or conversion of a given quantity of substance from liters to gallons.

When conversion is required, the first thing to do is to determine the units involved. That is, which unit do you want to convert to the required unit. This would give the understanding of the factors that are needed.

Answer:

A part is called Chloroplasts

Answer:

1: 1, 2, 3

2: 2, 2, 3

3: 2, 1, 2, 1

Explanation:

A simple way to do this:

Take an extra page and write your formula at the top, then take your elements (for example in #1, N and H) and write them on the reactants and products sides. On the reactants side write down the numbers you have (N-2, H-2) and the same for the products side (N-1, H-3). Find your GCF's and then you got your answer. It takes a bit of time to figure out HOW to do it but its a good skill to have. I have attached #1 for you.

If you have questions let me know!

Hope that helps

Since siderite has always had the chemical symbol feco3, it belongs to the carbonate class of rocks.

The atoms in each element of a compound is revealed by the molecular formula. It includes the symbols for the atoms of each element found in the compound, together with a tally of how many of each element there are overall in the shape of subscripts. Empirical, molecular, and structure chemical formulas are the three basic categories. The lowest whole-number ratio of the atoms in a compound has been shown by empirical formulae, the numbers of every form of atom in a molecule is shown by molecular formulas, and the bonds between the atoms or molecules are being shown by structural formulas.

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Answer:

Activation energy, in chemistry, the minimum amount of energy that is required to activate atoms or molecules to a condition in which they can undergo a chemical transformation or physical transport.

Dissolving of sugar in water is not a chemical change but a physical change because it can be reversed by evaporation.

Chemical changes involve making and breaking of bonds between atoms to form new molecules while physical changes do not change the chemical composition of the substance. Dissolving of sugar in water is a physical change because the water molecules interact with sugar molecules through a process called hydration to form a homogeneous mixture.

In the process of dissolving sugar in water, sugar molecules break apart from each other and become surrounded by water molecules. This process does not create new substances but rather creates a uniform mixture of sugar and water that can be reversed by evaporation. The breaking apart of sugar molecules does not involve any chemical reaction. Therefore, dissolving of sugar in water is a physical change, not a chemical change.

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The amplitude of a seismic wave usually decreases as the wave moves away from the epicenter due to the phenomenon of wave attenuation.

There are several factors that contribute to this attenuation:

Geometric Spreading: As the seismic wave propagates outward from the earthquake's epicenter, it spreads out over a larger area, resulting in the energy being distributed over a larger volume. This causes the amplitude of the wave to decrease with distance. According to the inverse square law, the intensity of the wave decreases with the square of the distance from the source. Absorption and Scattering: The seismic wave encounters various materials and geological structures as it travels through the Earth. These materials can absorb and scatter the energy of the wave, causing a reduction in its amplitude. Different types of rocks and soil have varying levels of attenuation, leading to differences in the decrease of wave amplitude.

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Answer:

B. Ca

Explanation:

Let's look at the electron configurations of all four elements (I am going to write it in noble gas configuration to make it simpler):

Mg electron configuration: [Ne]3s2

Ca electron configuration: [Ar]4s2

Ar electron configuration: [Ar]

K electron configuration: [Ar] 4s1

We notice that Ca has two electrons in the 4s sublevel, which satisfies what the question is asking for.

The answer is thus B. Ca.

Answer:

OH-

Explanation:

Overexcitability of the central nervous system (CNS) is a condition in which the CNS is overly sensitive and reactive to stimuli.

This can lead to a variety of symptoms, such as hyperactivity, restlessness, and difficulty concentrating. Overexcitability of the CNS can be caused by a number of factors, including genetic predisposition, neurological disorders, and exposure to certain medications or substances.

Treatment for overexcitability of the CNS typically involves addressing the underlying cause of the condition, as well as implementing behavioral strategies to help manage symptoms.

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262 nanometers would be a longest potential wavelength that would even eject a photoelectron from silver and this is shorter than the lower limit of the visible range which is about 380 nanometers so it is ultraviolet light.

The longest-wavelength light that generates an electron to be ejected from a gaseous lithium atom is 520 nm. Gaseous lithium atoms are illuminated with light of wavelength 400 nm.

Violet light of wavelength 400 nm discharges electrons with a maximum kinetic energy of 0.860 eV from sodium metal.

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