To preview image click here The chemical reaction is drawn for you again below. The bonds that are made and broken are indicated by dashed lines drawn through them. In almost all organic chemical reactions, the number of bonds that are made is the same as the number that are broken, even, or especially, in complex reactions such as this one.
a) How many bonds are broken in the reaction b) How many bonds are made in the reaction?

Answer:Acceleration has to do with changing how fast an object is moving If an object is not changing its velocity, then the object is not accelerating.  Anytime an object's velocity is changing, the object is said to be accelerating it has an acceleration.

Explanation:

Answer:

solvent

Explanation:

the solvent is usually a liquid substance

1. Ensure Clear and Visible Placement: Machine controls should be located in a position that is easily accessible, visible, and within reach of the equipment operator. Clear and intuitive labeling or color-coding can also be used to enhance visibility and assist in identifying the controls quickly.

2. Provide Adequate Guarding: The machine controls should be positioned in a manner that minimizes the risk of accidental activation or unintended operation. This can be achieved by incorporating appropriate guarding or barriers around the controls to prevent inadvertent contact or interference.

3. Consider Ergonomics and Operator Comfort: When determining the location of machine controls, it is essential to consider ergonomic principles and operator comfort. Controls should be positioned in a way that allows operators to maintain a comfortable and natural posture while operating the equipment. This can help reduce the risk of operator fatigue, musculoskeletal disorders, and errors due to discomfort or awkward reach.

These rules aim to promote operator safety, minimize the potential for accidents, and ensure efficient and effective control of equipment involving fluid power components.

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The molarity of NaOH solution is 0.114 M.

Given, Mass of flask and vinegar solution= 25.17 g.Mass of flask= 15.12 gVolume of vinegar solution (in mL)= 10.00 mlInitial volume of NaOH (in mL)= 0.00 mlFinal volume of NaOH (in mL)= 39.00 mlThe Mass of vinegar solution is 10.0503 g.The volume of NaOH used in titration is 39.00 ml.Let's calculate the molarity of the NaOH solution.First, calculate the moles of NaOH used in the reaction. Moles of NaOH = Molarity × Volume of NaOH (in L) Converting volume in mL to L,Volume of NaOH used = 39.00 mL = 39.00/1000 L = 0.0390 LThe molarity of NaOH solution is given by;Molarity of NaOH = Moles of NaOH / Volume of vinegar solution (in L)Converting volume in mL to L,Volume of vinegar solution = 10.00 mL = 10.00/1000 L = 0.0100 LNow, substituting the values; Molarity of NaOH = 0.114 M.

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Explanation:

asexual reproduction involves 1 parent and produces offspring that are genetically identical to each other and parent.

Sexual reproduction involves 2 parents and produces offspring that are genetically unique.

The penetration of a solution into tissue is most dependent upon its solubility or the ability to dissolve in the tissue.

The ability of a solution to penetrate tissue depends on several factors, but one of the most critical characteristics is its solubility. Solubility refers to the ability of a substance to dissolve in a given solvent, in this case, the tissue. When a solution has high solubility, it can readily mix and dissolve in the tissue, allowing for efficient penetration.

Solubility is influenced by various factors such as the nature of the solute and solvent, temperature, and concentration. A solution with a high solubility in tissue will have a greater affinity for the tissue components and can effectively permeate through the tissue barriers.

In summary, the solubility of a solution plays a crucial role in determining its ability to penetrate tissue. Higher solubility enhances the solution's ability to dissolve in the tissue, facilitating better penetration and distribution of the solution within the tissue.

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So,

There's an equation that we could use in order to find frequency, and it is the next one:

This equation tells us that the energy of the photon is equal to the product of the Plank constant (h), which is 6.626*10^-34 J.s, and the frequency.

In this problem, we know the value of E and the value of h, so we need to solve for v:

Therefore, the correct answer option is A.

Answer:

no they dont

Explanation:

Answer:

1 atom of carbon on the reactant side (CH₄ is methane, 1 carbon, 4 hydrogen).

1 atom of carbon on product side (Law of Conservation of energy proves this).

4 hydrogen on reactant side (CH₄ is methane, 1 carbon, 4 hydrogen).

4 hydrogen on product side (Again, the Law of Conservation of energy proves this)

4 oxygen atom on the reactant side (2O₂ means two diatomic molecules, or two oxygen molecules of 2 atoms each).

4 oxygen atoms on the product side (Law of Conservation of energy).

2 molecules of oxygen on the reactant side.

2 molecules of water on the product side

Yes, the chemical equation is balanced. The amount of atoms is the constant on both the reactant and product side.

A Ionic bond is chemical bond between two oppositely charged ions because of the transfer of valence electrons between them.

A covalent bond is a chemical bond in which two or more atoms share electrons between them. They can also form polar covalent bond or non-polar covalent bonds (Although that depends on the electronegativities of the atom).

The bond of a carbon dioxide molecule is covalent bond (Polar covalent bond if you've learned that yet)

Potassium Fluoride (KFl) form an ionic bond.

2Al₂O₃ --> 4Al + 3O₂

A reducing agent loses electrons while and oxidizing agent gains electrons.

In an endothermic reaction, the total bond energy in the reactants is greater than the bond energy of products so energy is absorbed by the reaction. (For an endothermic reaction, more energy needs to be absorbed than released).

Answer:

Explanation:

Worked example – calculating energy per gram of fuel

Energy given out = mass of water × 4.2 × temperature change.

Energy measured in joules, J.

4.2 is the specific heat capacity of water, J/g°C.

Temperature change = temperature of water after heating – temperature of water before heating.

BRAINLY PLZ

Decomposition of hydrogen peroxide has a thermodynamic instability. It decomposes at higher temperatures and concentrations to form water and oxygen. Other compounds, such as transition metals like silver and platinum, can catalyze the decomposition of hydrogen peroxide.

In the absence of a catalyst, the reaction of hydrogen peroxide decomposition is very slow at moderate temperatures. It can be accelerated by raising the temperature, which initiates the thermal decomposition reaction. This reaction can take place in either the liquid or vapour phase.

\(H_{2} O_{2}\) is the chemical formula for hydrogen peroxide. It is a very pale blue liquid that is slightly more viscous than water in its pure form. It is used as an oxidizer, bleaching agent, and antiseptic in water, usually in a dilute solution (3%-6% by weight) for consumer use, and in higher concentrations for industrial use. Concentrated hydrogen peroxide, also known as "high-test peroxide," decomposes explosively when heated and has been used as a rocket propellant.

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Answer: Handwashing. It is estimated that washing hands with soap and water could reduce diarrheal disease-associated deaths by up to 50% 1. Researchers in London estimate that if everyone routinely washed their hands, a million deaths a year could be prevented 2.

Explanation:

COFC and TOFC are both terms used in the freight forwarding industry, but they refer to different types of transportation methods.The main difference between COFC and TOFC lies in the type of cargo being transported. COFC involves loading containers onto flat railcars, while TOFC involves loading entire trailers.  

Here is a detailed explanation of the difference between COFC and TOFC:

1. Definition:
- COFC: COFC stands for Container on Flat Car. It refers to a transportation method where containers are loaded directly onto flat railcars. These containers are typically standardized and can be easily transferred between different modes of transportation, such as trucks, ships, and trains.
- TOFC: TOFC stands for Trailer on Flat Car. It involves loading entire trailers onto flat railcars. Unlike COFC, where only the containers are transferred, TOFC includes the entire trailer, including the cargo inside it.

2. Loading Process:
- COFC: In COFC, containers are typically loaded onto flat railcars using cranes or other lifting equipment. The containers are securely placed on the flatcar and can be easily secured to prevent movement during transportation.
- TOFC: In TOFC, trailers are loaded onto flat railcars using ramps or other loading equipment. The trailers are driven onto the flatcar and securely attached to prevent movement.

3. Benefits and Limitations:
- COFC: COFC offers several benefits, including efficient intermodal transportation, reduced handling of cargo, and increased security of cargo. However, it has a limitation that it requires specialized containers to be used.
- TOFC: TOFC also offers efficient intermodal transportation and reduced cargo handling. However, it provides the advantage of being able to transport a wider range of cargo, including oversized or irregularly shaped items. One limitation is that it requires specialized flat railcars to accommodate the trailers.

In conclusion, the main difference between COFC and TOFC lies in the type of cargo being transported. COFC involves loading containers onto flat railcars, while TOFC involves loading entire trailers. Both methods offer efficient intermodal transportation, but COFC requires specialized containers, while TOFC can accommodate a wider range of cargo.

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Effect of decreased ocean pH on marine organisms such as coral :

1. CO₂(aq) + H₂O(l) → H₂CO₃(aq)
2. H₂CO₃(aq) → H⁺(aq) + HCO₃⁻(aq)
3. Ca²⁺(aq) + CO₃²⁻(aq) → CaCO₃(s)
4. H⁺(aq) + CO₃²⁻(aq) → HCO₃⁻(aq)

Decreased ocean pH affects marine organisms such as coral through the following steps in this order:

1. Carbon dioxide (CO₂) dissolves in water (H₂O) to form carbonic acid (H₂CO₃).
2. Carbonic acid (H₂CO₃) dissociates into a hydrogen ion (H⁺) and a bicarbonate ion (HCO₃⁻).
3. Calcium ions (Ca²⁺) combine with carbonate ions (CO₃²⁻) to form calcium carbonate (CaCO₃), the primary building material of coral skeletons.
4. Increased hydrogen ions (H⁺) in the water react with carbonate ions (CO₃²⁻) to form more bicarbonate ions (HCO₃⁻), reducing the availability of carbonate ions needed for coral growth.

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Answer:

2Na+I2→2NaI

Explanation:

After converting hours into kilohours there are 5.664 khr in 33 weeks and 5 days.

When we measure the amount of electricity used in a home or a business, we often use kilowatt-hours (kWh) as the unit of measurement. However, when we want to measure electricity usage over a longer period of time, such as weeks or months, we may need to use larger units such as kilohours (khr). In this case, we are asked to determine how many khr there are in 33 weeks and 5 days.

To determine how many khr there are in 33 weeks and 5 days, we first need to convert the time into hours. There are 24 hours in a day, so 5 days is equal to 5 x 24 = 120 hours. There are 7 days in a week, so 33 weeks is equal to 33 x 7 = 231 days. Adding the 5 extra days, we have a total of 236 days. To convert days into hours, we multiply by 24, giving us:

236 days x 24 hours/day = 5,664 hours

Next, we need to convert hours into kilohours. One kilohour is equal to 1,000 hours, so we divide the total number of hours by 1,000, giving us:

5,664 hours ÷ 1,000 = 5.664 khr

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Answer:the element is potassium

the proton and electron is 19 and the nuetron is 19

Explanation:

Answer:

The atomic number gives the number of protons 19

p = 19

The atomic mass is the sum of the protons and neutrons

p+n = 39 p = 19

Put p into the equation and solve for n the neutrons

19+n = 39

Subtract 19 from both sides

19-19+n = 39-19

n = 20

The number of electons equal the number of protons in a neutral atom. The positive charge equal to the negative charge. The negative charge is the number of electons. This ion has a charge of +1. So solve for the negative charge.

-19+1 = -18

The negative charge is -18 so

e = 18

Answer:

False

Explanation:

Energy isn't created nor destroyed

A 14-year-old adolescent girl, Alice, has been diagnosed with anorexia nervosa. In the assessment of Alice, the findings that are more commonly associated with anorexia nervosa are Dysmenorrhea, decreased body temperature, and Heat intolerance.

Dysmenorrhea: Anorexia nervosa can lead to hormonal imbalances and disruptions in the menstrual cycle, which can cause irregular or absent periods (amenorrhea) and sometimes dysmenorrhea (painful periods).

Decreased body temperature: Anorexia nervosa can lead to lower body weight and reduced body fat, which can result in a lower body temperature. This is a physiological response to conserve energy and maintain the body's functions.

Heat intolerance: Anorexia nervosa can affect the body's ability to regulate temperature properly, leading to increased sensitivity to heat or cold. Individuals with anorexia may feel more discomfort or intolerance in extreme temperatures.

Hence,  the findings that are more commonly associated with anorexia nervosa are explained above.

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Answer:  The mass M = 9g, so G = 9g x 9.8 m/s² = 88.2gm/s², or 88.2 newtons. Insert the tension and gravitational force you just calculated into the original equation: -F = T + G = 18N + 88.2N = 106.2N. The force is negative because the object in the pulley system is accelerating upwards.

Explanation:

The decomposition of calcium carbonate is an endothermic reaction.

The given equation for the decomposition of calcium carbonate is:

CaCO₃ → CaO + CO₂

ΔH = +110 kJ/mol

where ΔH is the enthalpy change for the reaction.

The positive value of ΔH in the equation indicates that the reaction is endothermic, meaning that heat is absorbed by the reactants from the surroundings during the reaction. This means that the reaction requires an input of energy to proceed, and the products (CaO and CO₂) have higher potential energy than the reactant (CaCO₃).

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--The complete question is, Calcium carbonate decomposes in this balanced equation:

CaCO3 + CaO + CO2 ΔH = +110 kJ/mol

Is this reaction endothermic or exothermic?--

Answer:

Melting: one substance is involved and the liquid and solid are the same material.

To melt something heat is essential.

Dissolving: involves two materials;the resulting solution is a mixture of two substances.

The dissolved substance is still present in the solution even though it cannot be seen.

Explanation:

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\(\qquad\)\( \pink{\bf\longrightarrow { Molar \:mass \:of \:H₂O:-} }\)

\(\qquad\)\( \sf \longrightarrow 1\times +16\)

\(\qquad\)\( \sf \longrightarrow 18g\)

\(\qquad\)____________________

Let's calculate the number of moles present in 89g of H₂O.

\(\qquad\)\( \purple{\bf\longrightarrow { No \:of \:moles = \dfrac{Given \:mass}{Molar\: mass}}}\)

\(\qquad\)\( \sf \longrightarrow \dfrac{89}{18}\)

\(\qquad\)\( \sf \longrightarrow 4.94\: moles\)

We know –

Number of molecules:-

\(\qquad\)\( \purple{\bf \longrightarrow No \: of \: moles \times Avogadro \: number}\)

\(\qquad\)\( \sf \longrightarrow 4.94×6.022×10²³\)

\(\qquad\)\( \sf \longrightarrow 2.98 ×10²⁴\)

\(\qquad\)\(\purple{ \bf \longrightarrow 2.98×10²⁴ molecules}\)

\(\qquad\)____________________

Meg's obstacle course in gym class is 60 yards long, consisting of running 100 feet, crawling through a 20-foot tunnel, and dribbling a soccer ball 60 feet to the finish line

To find out how many yards long the obstacle course is, we need to add up the distance Meg runs, crawls, and dribbles.

First, she runs 100 feet, which is equivalent to 33.33 yards (since 1 yard = 3 feet). Then, she crawls through a 20-foot tunnel, which is equivalent to 6.67 yards.

Finally, she dribbles a soccer ball 60 feet, which is equivalent to 20 yards. Therefore, the total distance of the obstacle course is 33.33 yards + 6.67 yards + 20 yards = 60 yards.

The obstacle course that Meg is doing in gym class consists of running, crawling, and dribbling. She starts by running 100 feet and jumping over a hurdle, which is equivalent to 33.33 yards. Next, she crawls through a 20-foot tunnel, which is equivalent to 6.67 yards.

Finally, she dribbles a soccer ball 60 feet to the finish line, which is equivalent to 20 yards. To determine the total length of the obstacle course, we add up the distance of each segment, which equals 60 yards.

Therefore, the obstacle course that Meg is doing is 60 yards long.

Meg's obstacle course in gym class is 60 yards long, consisting of running 100 feet, crawling through a 20-foot tunnel, and dribbling a soccer ball 60 feet to the finish line. We can calculate the total distance by converting each segment's length to yards and adding them up.

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There are 20.8 moles of propanol

The mole is the number of particles(molecules, atoms, ions) contained in a substance  

1 mol = 6.02.10²³ particles

Can be formulated

N=n x No

N = number of particles

n = mol

No = Avogadro's = 6.02.10²³

1.2 x 10⁵ molecules of propanol

\(\tt \dfrac{1.25\times 10^{25}}{6.02\times 10^{23}}=20.8~moles\)

The same conditions of temperature and pressure, three different samples of the same uniform substance will have the same density.

The correct option is 2.

The mass of a specific material per unit volume is known as density. The equation for density is d = M/V, where d represents density, M is mass, and V is volume. Density is often expressed in grams per cubic centimeter.

Absolute density and relative density are the two main types of density. Relative density, also referred to as specific gravity, is the ratio of a product's density to the density of a reference material.

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Answer:

d=5857,83g/m3 or 5,86kg/m3.

Explanation:

sorry if its wrong

If the pH of the solution is adjusted to 3.86 by the addition of concentrated NaOH, the lactate and lactic acid will be at equilibrium.

At this pH, lactate will be predominantly in its ionized form (lactate ion), while lactic acid will be predominantly in its unionized form. The concentration of lactate and lactic acid can be calculated using the Henderson-Hasselbalch equation: pH = pKa + log([lactate]/[lactic acid]).

Rearranging the equation: [lactate]/[lactic acid] = 10^(pH - pKa), At pH 3.86, the pKa of lactic acid is 3.86, so [lactate]/[lactic acid] = 10^(3.86 - 3.86) = 1
This means that the concentration of lactate and lactic acid will be equal at equilibrium. The actual concentration will depend on the initial concentration of the solution and the amount of concentrated NaOH added to adjust the pH.

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To determine the concentration of lactate and lactic acid at equilibrium when the pH of the solution is adjusted to 3.86 by the addition of concentrated NaOH, follow these steps:

1. Identify the given information: The pH of the solution is adjusted to 3.86.

2. Recall the relationship between pH and pKa: pH = pKa + log([A-]/[HA]), where [A-] is the concentration of lactate (the conjugate base), and [HA] is the concentration of lactic acid (the weak acid). The pKa of lactic acid is approximately 3.86 as well.

3. Since pH = pKa, the equation becomes: 3.86 = 3.86 + log([lactate]/[lactic acid])

4. Subtract 3.86 from both sides: 0 = log([lactate]/[lactic acid])

5. Use the inverse log (or antilog) to solve for the ratio: 1 = [lactate]/[lactic acid]

6. This result indicates that the concentrations of lactate and lactic acid are equal at equilibrium when the pH is adjusted to 3.86.

In conclusion, when the pH of the solution in the above problem is adjusted to 3.86 by the addition of concentrated NaOH, the concentration of lactate and lactic acid will be equal at equilibrium.

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Answer: Ion-Dipole

Explanation: I took the CK-12 practice and got it right

When KCL dissolved in ethanol, the intermolecular attraction between K+ ions and ethanol molecules is ion - dipole interaction.

The term ion-dipole interaction is defined as the intermolecular force of attraction between cation or anion and a molecule. It is present in the solution where ionic compounds dissolve in polar solvents.

Due to the polar O-H group's presence in the molecule, ethanol is a polar substance. Thus, the molecule has a dipole moment. The dipole's positive end rests on hydrogen, and its negative end rests on oxygen.

K+ ions can interact with the ethanol's negative end of the dipole through ion-dipole interaction when KCl is dissolved in the alcohol.

Thus, When KCL dissolved in ethanol, the intermolecular attraction between K+ ions and ethanol molecules is ion - dipole interaction.

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