Please answer correctly !!!!!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!!!! And explain please !!!!!!!!!!!!!!!!!!!

Euler's method will be exactly accurate if the solution turns out to be a first-order polynomial.

Euler's method is a numerical approximation technique used to solve ordinary differential equations (ODEs) by dividing the interval into small steps and using the slope at each step to estimate the next point. It is a first-order method, which means its error is proportional to the step size. In general, Euler's method is not exact and introduces some error compared to the actual solution of the ODE.

However, for a first-order polynomial, Euler's method can produce an exact solution. This is because the slope of a first-order polynomial is constant, so the linear approximation made at each step matches the actual polynomial exactly. In other words, the error introduced by Euler's method cancels out, resulting in an exact solution for a first-order polynomial.

For higher-order polynomials, Euler's method introduces increasing errors due to the non-constant slopes, and more sophisticated numerical methods are typically used to obtain accurate approximations.

learn more about Euler's method

https://brainly.com/question/31593798

#SPJ4

1. Which of the following is not homogeneous? (A) Brass

(B) Calamine lotion

(C) Dilute hydrochloric acid

(D) Air​

All of them are homogeneous, I looked them up individually, And it says they are all homogeneous.

Hope this helps and let me know if I'm wrong!

The percent by mass of sodium sulfate in a solution of 32.0 g of sodium sulfate dissolved in enough water to make 94.0 g of solution is 34.0%.

The percent by mass of sodium sulfate in the solution can be calculated by dividing the mass of sodium sulfate by the mass of the solution and multiplying by 100.

Mass of sodium sulfate = 32.0 g
Mass of solution = 94.0 g

Percent by mass = (Mass of sodium sulfate / Mass of solution) * 100
               = (32.0 g / 94.0 g) * 100
               = 34.0%
The percent by mass of sodium sulfate in the solution is 34.0%.

To know more about sodium sulfate visit:

https://brainly.com/question/28863956

#SPJ11

Polarization diagrams are constructed to examine the behaviour of a metal in the presence of an electrolyte in order to understand the impact of various factors on the corrosion rate and corrosion potential. Let us examine the impact of each of the factors on the corrosion rate and corrosion potential of a metal M corroding to dissolved M in an acid solution under activation control with other parameters constant:

(a) The anodic reaction's increase in ip- Increasing ip of the anodic reaction decreases the anodic. Tafel slope and shifts the anodic Tafel line to the right and up. It results in a greater corrosion rate but no effect on the corrosion potential. The cathodic reaction is unaffected. Therefore, the metal's corrosion rate is increased, but the corrosion potential is not affected.

(b) Increasing io of the cathodic reaction - Increasing io of the cathodic reaction increases the cathodic Tafel slope and moves the cathodic Tafel line to the left and down. The corrosion potential decreases, but there is no effect on the corrosion rate. The anodic reaction is unaffected. Therefore, the corrosion potential decreases, but the corrosion rate remains unchanged.

(c) Increasing the concentration of dissolved H - Increasing the concentration of dissolved H raises the equilibrium potential of the cathodic reaction. The anodic reaction is unaffected. There is no effect on the corrosion rate, but the corrosion potential shifts to a more noble (positive) value.

(d) Increasing the Tafel constant of the anodic reaction - An increase in the Tafel constant of the anodic reaction decreases the anodic Tafel slope and shifts the anodic Tafel line to the right and up. There is no effect on the cathodic reaction. As a result, the corrosion rate increases, but the corrosion potential remains unchanged.

Learn more about corrosion potential   here ;

https://brainly.com/question/31313074

#SPJ11

Group 1 elements will be more reactive than group 2 because group 1 element has one valence electrons.

The kind of elements which posses 1 valence electrons, will  be kept in group 1. Due to it has 1 valence electrons, hence it will be more reactive.

In a group, by moving top to down in the periodic table reactivity increases.

Reactivity would be a parameter that expresses how easily a substance reacts chemically. The chemical may react alone or in combination with some other atoms or molecules, and energy is often released as a result of the reaction. The most reactive substances and elements have the potential to spontaneously as well as explosively ignite.

Therefore, group 1 elements will be reactive than group 2 elements.

To know more about group 1

https://brainly.com/question/20399409

#SPJ1

Answer:

true

Explanation:

Answer: false, gases can be more easily compressed than liquids.

Explanation: They're easier to compress because there's much more empty space between the gas particles.

The number of moles of sodium chloride (NaCl) that can be produced is:

4.5 moles Na * (2 moles NaCl / 2 moles Na) = 4.5 moles NaCl from 4.5 moles of sodium (Na), you can produce 4.5 moles of sodium chloride (NaCl) according to the balanced chemical equation.

The balanced chemical equation shows that 2 moles of sodium (2Na) react with 1 mole of chlorine (Cl₂) to produce 2 moles of sodium chloride (2NaCl). From the given information, we have 4.5 moles of sodium (Na). According to the stoichiometry of the balanced equation, we can determine the number of moles of sodium chloride (NaCl) that can be produced by using a simple mole ratio. Mole ratio of Na to NaCl: 2 moles NaCl / 2 moles Na Therefore, the number of moles of sodium chloride (NaCl) that can be produced is: 4.5 moles Na * (2 moles NaCl / 2 moles Na) = 4.5 moles NaCl Hence, from 4.5 moles of sodium (Na), you can produce 4.5 moles of sodium chloride (NaCl) according to the balanced chemical equation.

For more question on moles

https://brainly.com/question/15356425

#SPJ11

The oxidation of the iron ions in the hemoglobin molecule to the ferric state (Fe³⁺) results in the loss of the molecule's ability to bind and transport oxygen.

This oxidation process alters the structure of hemoglobin, rendering it less effective in its primary function of carrying oxygen to body tissues.

Hemoglobin is a protein found in red blood cells that is responsible for transporting oxygen from the lungs to tissues throughout the body. It contains iron ions (Fe²⁺) that bind to oxygen molecules, forming a reversible complex known as oxyhemoglobin. This complex is crucial for oxygen transport.

However, when the iron ions in hemoglobin undergo oxidation to the ferric state (Fe³⁺), the binding affinity for oxygen decreases significantly. The oxidation can be caused by factors such as exposure to certain chemicals or reactive oxygen species. As a result, the oxidized hemoglobin is unable to efficiently bind oxygen, impairing its oxygen-carrying capacity and potentially leading to reduced oxygen delivery to tissues.

Learn more about oxygen here;

brainly.com/question/17698074

#SPJ11

Answer:

One reason for Jennelle's designs working better is because her aluminum foil sunlight reflector was larger. So. the size of the reflective surface does affect the temperature of the oven. For any given design, the larger the insolated area, the greater the power. Meaning a smaller cooker only collects a small amount of sunlight; no matter how good the design. 

That is one reason why the parabolic solar oven design works so well. Parabolic solar cookers use a parabolic-shaped reflector to direct sunlight to a small area in order to generate heat for cooking. They are able to reach temperatures as high as 400°F. 

Insulating the oven would help it retain heat. Insulation lets you collect more heat and light energy, which allows you to raise the temperature to even higher levels. So, insulation is anything that lets you "hold on to" that collected heat and lose less of it.

A tighter cover would heat the oven faster rather than a looser cover. The parabolic design doesn't have a cover, although the food itself is usually in a pot or container.  

Explanation:

In most designs, using a tighter cover and increasing the reflecting surface will both raise the temperature. Insulation will, however, typically lower the temperature.

It is frequently necessary to add, remove, or adjust elements while designing a product in order to increase its efficiency. The temperature and how to raise or lower it is among the aspects taken into account in items like ovens.

Some methods for raising the temperature include:

Insulation: Since insulation is primarily employed to disrupt the cycle of heat transfer, applying insulation typically entails lowering the product's internal temperature or concentrating the heat in a single location.

Thus, In most designs, using a tighter cover and increasing the reflecting surface will both raise the temperature.

To learn more about temperature, follow the link;

https://brainly.com/question/11464844

#SPJ2

Diamond mineral is the hardest known substance in nature,  its resistance to scratching and is measured using the Mohs scale

The hardness of a mineral is defined as its resistance to scratching and is measured using the Mohs scale, a relative scale that ranges from 1 (softest) to 10 (hardest). Diamond has a hardness of 10, the highest rating on the Mohs scale, making it the hardest substance known to exist in nature. This hardness gives diamond its exceptional durability, making it ideal for use in jewelry and other applications where scratch resistance is important. The hardness of diamond also makes it difficult to cut, shape, and polish, which has led to the development of specialized cutting and polishing techniques to work with this unique mineral.

Learn more about Diamond here:

https://brainly.com/question/29775108

#SPJ4

Answer:

C. Chemical reactions may have deteriorated the rubber

Explanation:

A tire ages with time and most of the time this happens due to chemical reactions in the rubber parts. This could happen faster due to heat and sun.

As a tire is deteriorating or aging, a chemical change happens. What happens is that more chemical bonds are going to be produced with time between the molecules. We call this the process of oxidation. This actually bad for the tire, because the rubber would turn out to be stuffs d strong causing the tires thread to separate and also disintegration would occur.

Answer:

Ok so I assume they gave u a reaction before asking this question. Look at that reaction and try to figure out what substances are changing in valency, if there is a substance(s) that doesn't change its valency then it's a spectator ion.

The formal charge of bromine in the bromate ion is +3.

The formal charge of bromine (Br) in the bromate ion (BrO3-) can be calculated by comparing the valence electrons of bromine in its neutral state with the electrons it has in the bromate ion.

To determine the formal charge, we assign the electrons in the molecule to their respective atoms based on electronegativity. Bromine has a valence electron configuration of 2s22p6, and in the bromate ion, it is bonded to three oxygen atoms.

To calculate the formal charge, we follow the formula:

Formal charge = Valence electrons - Lone pair electrons - 1/2 * Bonding electrons

In the case of the bromate ion, bromine has six valence electrons. Each oxygen atom contributes 6 electrons (1 from each oxygen-bromine bond), and there is one additional electron due to the negative charge on the ion.

By substituting these values into the formula, we find:

Formal charge = 6 - 0 - 1/2 * 6 = 6 - 0 - 3 = +3

Therefore, the formal charge of bromine in the bromate ion is +3.

Know more about Formal Charge here:

https://brainly.com/question/30459289

#SPJ11

Answer:

Refractive index

Heat capacity

Density

Explanation:

Properties that are used to identify materials are called intensive properties. These intensive properties are characteristic of the material and does not depend on the amount of material present.

Thus, if i want to identify whether the three bars are made of the same metal, i can look out for the following properties;

Refractive index

Heat capacity

Density

These properties are intensive properties thus they can be used to identify an unknown substance.

Answer:

28.17

Explanation:

the formula for density is mass/volume

84.5/3=28.17

hope this helped

have a nice day!!

Reason:- The Mechanism of Diffusion In the case of food coloring in water, the water is the solvent while the food coloring is the solute. Once they've mixed, they make a solution. Diffusion takes time, though how much time depends on the kinetic energy of the molecules randomly bouncing among each other.

Answer:

TIMED HELP ASAP

19.11 g of MgSO₄ is placed into 100.0 mL of water. The water's temperature increases by 6.70°C. Calculate ∆H, in kJ/mol, for the dissolution of MgSO₄. (The specific heat of water is 4.184 J/g･°C and the density of the water is 1.00 g/mL). You can assume that the specific heat of the solution is the same as that of water.

Answer:

-21.03 kJ/mol

Explanation:

∆H is enthalpy. Enthalpy is the total heat content of a system.

So we can establish that ∆H = q (heat)

The formula for heat (q)

q = cm∆T

c = specific heat capacity

m = mass of substance

∆T= change of temperature

Since we are calculating the enthalpy of the SOLUTION. We must account for both the mass of water and the mass of MgSO₄ in our q formula.

All you gotta do is plug and chug at this stage.

∆H = q     = cm∆T = (4.184)(19.11+100.0)(6.70) = 3338.986808 Joules

We have now calculated the heat (aka enthalpy) of the solution.

BUT

Remember! The problem asked for enthalpy in kj....

Use this conversion factor.

1000 J = 1 kJ

3338.986808 Joules * 1kJ/1000 J = 3.338986808 kJ

We were asked to find ∆H for the dissolution of MgSO4  in units of kj/mol so we are not finished.

Take the grams of MgSO4 in the problem  and convert it into moles using its molar mass.

MgSO4 molar mass = 120.3676 g

1 mol = 120.3676 g MgSO4   <---- Use this as a conversion factor

19.11 g MgSO4 * 1 mol MgSO4/120.3676 g = 0.15876365 mol MgSO4

Now that you've calculated the moles of MgSO4 in this solution. You can divide your heat by it.

q dissolution = 3.338.986808 kJ/ 0.15876365 mol =  21.03 kj/mol

Note that the problem tells us that the temperature of water increases.

This means that the water is experiencing an endothermic process (heat is being absorbed from MgSO4) . Mathematically, this would be indicated by a positive sign. ---> +q

We can assume MgSO4 is losing heat as it is placed into the water. It is experiencing an exothermic process (heat is being lost).  Mathematically, this would be indicated by a negative sign. ----> -q

So if we're calculating the enthalpy for the dissolution of MgSO₄ ....the value we've arrived at must be negative.

Answer

∆H = 21.03 kj/mol :)))))

I hope that helped...I feel like my explanation was a bit convoluted.

Answer:

CuCi2 + H2S ⇒ CuS + 2HCi

Explanation:

In order to balance a chemical equation you need to make sure to have the same number of atoms on each side by multiplying on both sides.

CuCi2 + H2S = CuS + HCi

Cu = 1

Ci = 2

H = 2

S = 1

Product

Cu = 1

S = 1

H = 1 × 2 = 2

Ci = 1 × 2 = 2

Since all elements have a balanced amount of atoms, the equation is now balanced.

CuCi2 + H2S ⇒ CuS + 2HCi

Hope this helps.

A chemical equation is said to be balanced if the quantity of each type of atom in the reaction is the same on both the reactant and product sides. In a balanced chemical equation, the mass and the charge are both equal. Here the balanced equation is CuCl₂ + H₂S → CuS + 2HCl.

A balanced chemical equation, in which the masses of the reactants and products are equal, contains the same amount of atoms of each element on both sides of the equation. In other words, both sides of the reaction have an equal balance of mass and charge.

The chemical equation is said to be balanced if there are no inequalities. Here the balanced equation is:

CuCl₂ + H₂S → CuS + 2HCl

To know more about balanced equation, visit;

https://brainly.com/question/14812568

#SPJ6

Answer

C. 259 K

Explanation

Given:

Temperature = -14°C

What to find:

The temperature in kelvins of -14°C.

Solution:

Conversion factor: 0°C + 273 = 273 K

Therefore, 14°C + 273 = 259 K

The temperature in kelvins of -14°C is 259 K

Answer:

I-131- To treat goitre

U- 238- To produce electricity

(ii) (ii) and (iii)

Explanation:

Radioisotopes have various applications in science. These applications may be positive or negative.

I-131- is used to treat goitre. This is a very important medical application of this isotope of iodine.

U-238 is ordinarily non-fissile but can be transformed to Pu-239 and used as a nuclear fuel for electricity generation.

We can find the mass of copper by finding the difference between the mass of the crucible and the copper, and just the crucible. This is possible since the mass that is left would be attributed to just the copper.

Mass of copper = (Mass of crucible + copper) - Mass of crucible

                          = 5.92 g - 4.65 g

                          = 1.27 g

Answer: Diurnal temperature range is the difference between __maximum______ and ____minimum____ temperature each ___1 day______.

Explanation:

Answer:

[C₆H₁₂O₆] = 0.139 M

Explanation:

Molarity si defined as a sort of concentration. It indicates the moles of solute that are contained in 1 L of solution.

We can also say, that molarity are the mmoles of solute contained in 1 mL of solution.

For this case, the solute is sugar (glucose). Let's determine M (mmol/mL)

(3.95 g . 1mol / 180g) . (1000 mmol / 1mol) / 158 mL

We determine moles, we convert them to mmoles, we divide by mL

M = 0.139 M

Moles = 3.95 g . 1mol / 180g → 0.0219 mol

We convert mL to L → 158 mL . 1L/1000mL = 0.158L

M = 0.0219 mol / 0.158L = 0.139 M

Element: Helium, Oxygen

Compound: H2O, CO2

Answer:

No, it is not an example of a mutation.

Explanation:

Mutations occur in the chromosomes of the organism, in this case the fly. A mutation is a permanent alteration in the DNA of the fly. Therefore, if the fly were to have purple wings when it was born then it would be a mutation. However, in this case we dyed the wings of the fly purple. This does not alter or change the DNA in any way to cause a mutation.

Hope this helps!!

- Kay

The electrical force exerted by the comb on the piece of paper is about 5.84N.

We arrive at the answer by applying a basic law in the field of electrostatics, known as Coulomb's Law.

Coulomb's Law states two postulates about the electrostatic forces between bodies.

1. The Force between two charged bodies or particles is directly proportional to the product of the magnitude of charges.

  F ∝ |Q₁*Q₂|

2. The same force is also inversely proportional to the square of the distance between the bodies.

 F ∝ 1/R²

By combining the expression obtained through the postulates, we arrive at the following equation.

F = K(|Q₁*Q₂| / R²)

where K is called the electrostatic constant, equal to 9 * 10⁹ N·m²/C²

In the given question, if the piece of paper has also been polarized to the same amount of charge, it also holds a charge of 382nC. We can apply Coulomb's Law here to find the force between the comb and the paper.

F = 9 * 10⁹ * (382*382*10⁻¹⁸/15*15*10⁻⁶)

F = 9 *382²/225 *10⁻³

F = 5.836 N

Thus the force between the paper and the comb, mutually exerted on each other, is about 5.84N.

For more on Coulomb's Law,

brainly.com/question/29793807

#SPJ4

Answer:

Thus, when 2.5 mol of oxygen reacted with hydrogen, 2 * 2.5 mol = 5 so its A

The majority of energy within an ecosystem is lost over time due to the increase in entropy. Energy is lost as heat through various processes, such as respiration and metabolic activities, as well as through waste products and excretion. This gradual loss of energy leads to a decrease in the amount of available energy within the ecosystem.

The majority of energy within an ecosystem is lost over time due to the concept of entropy. Entropy is a measure of disorder or randomness in a system. As energy is transferred and transformed within an ecosystem, it tends to become less organized and more dispersed, resulting in an increase in entropy.

Here's a step-by-step explanation of how energy is lost in an ecosystem due to entropy:

1. Energy enters the ecosystem through the process of photosynthesis, where plants convert sunlight into chemical energy.

2. This energy is then passed on to herbivores when they consume plants.

3. When herbivores are consumed by carnivores, a portion of the energy is transferred to the carnivores.

4. However, at each step of energy transfer, some energy is lost as heat through processes such as respiration and metabolic activities.

5. Additionally, energy is also lost through waste products and excretion.

6. As the energy is transferred from one trophic level to another, it becomes less concentrated. This is because not all of the energy is transferred or absorbed efficiently, and some is lost as heat.

7. The energy that is not lost as heat is eventually used by organisms for various activities, such as growth, reproduction, and movement. These activities also contribute to energy loss in the form of heat.

8. Ultimately, the energy that remains within an ecosystem after multiple transformations is relatively small compared to the initial amount of energy that entered the ecosystem.

Learn more about majority of energy here:-

https://brainly.com/question/33444699

#SPJ11

448 K is the final temperature of the water.

The specific heat capacity is defined as the quantity of heat (J) absorbed per unit mass (kg) of the material when its temperature increases by 1 K (or 1 °C), and its units are J/(kg K) or J/(kg °C).

Given,

the mass of Na is 23 g

The volume of water = 293 cm3

Mass of water = 293 g

Total solution mass = 23 g + 293 g = 316 g

Specific heat capacity of water = 4.18 J/Kg

The equation relating mass, heat, specific heat capacity and temperature change is:

q = mcΔT

197 kJ = 316 g x 4.18 J/Kg x (\(T_{finals} - T_ {initial}\))

197 kJ = 316 g x 4.18 J/Kg x ( \(T_{finals}\)-298 K)

0.1491429956 x 1000 =  \(T_{finals}\)-298 K

149.1429956 + 298 = \(T_{finals}\)

447.1429956 = \(T_{finals}\)

448 K = \(T_{finals}\)

Hence, 448 K is the final temperature of the water.

A high specific heat capacity means that it can store a large amount of thermal energy for a small change in mass or temperature.

Learn more about specific heat capacity here:

brainly.com/question/2530523

#SPJ4

The mutated amino acid at position 229 is arginine (Arg), and its substitution can potentially disrupt the 3D structure and alter the function of the protein due to changes in side chain properties and interactions.

Structure of the Amino Acids:

The wild-type amino acid at position 229 is not specified, so the structure cannot be provided.

The mutated amino acid is arginine (Arg), which has a side chain containing a positively charged guanidinium group.

Importance of the Position:

The specific position 229 in the protein sequence may be functionally significant, such as being involved in protein-protein interactions, binding sites, catalytic activity, or structural stability.

Without detailed knowledge of the protein, its function, and its structural context, it is difficult to determine the exact importance of this specific position.

Effects of the Mutation on Structure and Function:

The substitution of an amino acid at position 229 from the original to arginine can have various effects on protein structure and function.

Arginine's larger and positively charged side chain may introduce steric clashes or alter electrostatic interactions within the protein structure.

The mutation can potentially disrupt local or global protein folding, stability, or conformational changes, affecting its overall 3D structure.

The functional consequences of the mutation depend on the specific role of the amino acid at position 229, which can include changes in protein-protein interactions, enzymatic activity, substrate binding, or signal transduction pathways.

It is crucial to analyze the protein's structural context, available experimental data, and computational modeling techniques to gain a more accurate understanding of the specific effects of the mutation on the protein's structure and function in the given context.

Learn more about Amino Acids from the given link:

https://brainly.com/question/31872499

#SPJ11