why does sudan iii dye turn orange when it detects lipids?

Answer:A

Explanation:

Answer:

it would sink to the bottom of the ocean and break in half

Explanation:

Explanation:

so if the ship was on displaced water then the ship would sink to the bottom of the ocean

The ones that are physical properties of water are:

All substances that exist in the universe have chemical properties and physical properties. Chemical properties are the properties that are able to be observed or measured only when the substance is undergoing a chemical change or chemical reaction. These properties are connected to the chemical bonds that a substance has. Some examples of chemical properties are flammability, toxicity, and radioactivity.

Physical properties are properties that are able to be observed without changing the identity or chemical composition of the substance. In another way, these properties can be observed without testing the substance under chemical change. Some examples of physical properties are boiling point, shape, color, odor, and texture.

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Answer:

C4H8O2

Explanation:

Step 1: Calculating the mass of carbon, hydrogen, and oxygen in 0.956 g dioxane.

C = 1.91 g CO 2 × (1 mol CO2/ 44 g CO2) × ( 1 mol C / 1 mol CO2 ) × ( 12 g C / 1 mol C )

= 0.521 g

H = 0.782 g H2O × (1 mol H2O/ 18 g H2O) × ( 2 mol H / 1 mol H2O ) × ( 1 g H / 1 mol H )

= 0.087 g

O = 0.956 dioxane - 0.521 g C -0.087g H

= 0.348g

Step 2: Using the data from step 1 above, calculating the empirical formula of dioxane.

C = 0.521 g × (1 mol C/ 12 g C)

= 0.043 mol

H = 0.087 g × (1 mol H/ 1.008 g H)

= 0.087 mol

O = 0.348g × (1 mol O / 12.01 g O)

= 0.022 mol

The empirical formula is: C0.043H0.087O0.022

Step 3 : Calculating the molecular weight of dioxane.

Molecular weight = grams / mole

= 0.532 g dioxane / 0.00604 mol dioxane

= 88.1 g / mol

The empirical formula weight is 2(12.0) + 4(1.01) + 16.0 = 44.0. The molecular weight is 88.08. The ratio of molecular weight to empirical weight is:

Molecular weight / Empirical weight = 88/44 = 2

Therefore the molecular formula is: C4H8O2.

Answer:

8. one ionizable hydrogen

9. Water-soluble organic acids, including dicarboxylic acids, such as malonic and glutaric acid,

Explanation:

8. A monoprotic acid is an acid that contains only one ionizable hydrogen. Hydrochloric acid and acetic acid are monoprotic acids. A polyprotic acid is an acid that contains multiple ionizable hydrogens

9. are a group of organic compounds often detected in atmospheric particles [Chebbi and Carlier, 1996; Kawamura and Kaplan, 1987; Saxena and Hildemann, 1996; Yang and Yu, 2008].

I hope this helps!  It was a bit hard to find

Answer:

Answer:

8. one ionizable hydrogen

9. Water-soluble organic acids, including dicarboxylic acids, such as malonic and glutaric acid,

Explanation:

8. A monoprotic acid is an acid that contains only one ionizable hydrogen. Hydrochloric acid and acetic acid are monoprotic acids. A polyprotic acid is an acid that contains multiple ionizable hydrogens

9. are a group of organic compounds often detected in atmospheric particles

Explanation:

none

Answer:

a the awnser is a. mandela was a big part in ending the apartheid

Answer:

A

Explanation:

Answer:

Explanation:

The only answer you can get would be that the area was once covered with water.

A glacier wouldn't allow the fish to move

Predators would likely eat more than they would leave behind as evidence.

If they developed limbs, at some of them would show up that way.

To find the mass of copper oxide that reacted, the student could follow these steps given in the explanations.

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In order to reduce the risk of radiation exposure to individuals and environmental contamination, radioactive wastes are kept. The wastes' radioactivity decreases over time.

Large steel and concrete barrels that contain the garbage are typically properly sealed, although accidents and leaks can still happen. Cancerous growths can result from the severe negative impacts of nuclear waste on life.

Currently, dry casks are used to store all of the nuclear waste that a power plant produces over the course of its lifetime. Since 1987, Yucca Mountain in Nevada has been intended as a permanent disposal location for spent nuclear material.

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Approximately 6.63 grams of sulfide can be converted into zinc oxide using 2.64 L of oxygen gas measured at 21°C and 101 kPa.

The balanced equation is:2 ZnS(s) + 3 \(O_2\)(g) → 2 ZnO(s) + 2 S\(O_2\)(g)

The stoichiometric coefficient of ZnS is 2, while that of \(O_2\)is 3. So, the number of moles of \(O_2\)required to react with 1 mole of ZnS is given by (3/2) moles (i.e. 1.5 moles).

At STP (i.e. standard temperature and pressure), 1 mole of any gas occupies a volume of 22.4 L.

So, at 21°C and 101 kPa, the volume of 2.64 moles of oxygen gas is given by:

V = (n x R x T)/P= (2.64 x 8.31 x 294)/101= 62.7 L

Approximately 62.7 L of oxygen gas is needed to react completely with the sulfide and convert it into zinc oxide.

Therefore, to find the mass of sulfide that can be converted into zinc oxide using 2.64 L of oxygen gas measured at 21°C and 101 kPa, we first convert 2.64 L to moles of \(O_2\):

PV = nRTn = PV/RTn = (101 kPa)(2.64 L) / (8.31 L kPa/mol K)(294 K)= 0.102 moles of \(O_2\)

Since 3 moles of \(O_2\)re needed to react with 2 moles of ZnS, then the moles of ZnS required would be:

(2/3)(0.102 mol) = 0.068 mol ZnS.

To find the mass of ZnS, we use its molar mass:MM of ZnS = 97.47 g/molmass of ZnS

= (0.068 mol)(97.47 g/mol)mass of ZnS = 6.63 g

Hence, approximately 6.63 grams of sulfide can be converted into zinc oxide using 2.64 L of oxygen gas measured at 21°C and 101 kPa.

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Answer:

2500 meters per second

Explanation:

The two gas samples that have the same total number of molecules are gases A and C.

The number of molecules of a substance can be calculated by multiplying the number of moles in the substance by Avogadro's number (6.02 × 10²³).

However, the number of moles can be calculated using the following formula;

PV = nRT

Where;

According to this question, four gas samples were given in a table that shows their respective temperature, pressure and volume.

Based on the above table, gases A and C have the same volume, temperature and pressure. Hence, they will have the same number of moles and molecules.

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The correct answer is "d. there are a greater number of H2O molecules per unit of volume in liquid water than ice."

The density of a substance is defined as its mass per unit volume. In general, liquids are more dense than solids because the molecules in a liquid are more closely packed together and have more freedom to move than the molecules in a solid. When ice (a solid) melts to form liquid water, the water molecules are no longer held in a fixed arrangement and can move more freely. This increased mobility results in a more compact packing of the molecules, leading to an increase in the density of the liquid water compared to ice.In other words, there are more H2O molecules per unit of volume in liquid water than in ice, making liquid water more dense than ice.

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Answer:

the answer is A

Explanation:

Hopefully u get the answer right

Answer:

A

Explanation:

give me thanks not stars

The first ionization energy (IE1) of transition metals remains relatively constant due to their electronic configuration.

Transition metals have a partially filled d-orbital which is energetically closer to the valence shell than the s-orbital, resulting in a higher shielding effect.

This means that the attraction between the positively charged nucleus and the valence electrons is reduced, making it easier to remove the electrons and lower the IE1.

However, since the d-orbital is partially filled, there is a strong repulsion between the electrons in this orbital, making it more difficult to remove the valence electrons.

As a result, the effect of shielding is balanced by the repulsion effect, leading to a relatively constant IE1 across the transition metals.

Additionally, the nuclear charge also increases across the period, which further balances the effect of shielding and repulsion on IE1.

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Answer:

43.84 g/mol

Explanation:

We use the ideal gas law to find the number of moles of gas present.

So PV = nRT where P = pressure of gass = 0.757 atm, V = volume of gas = 220 mL = 0.22 L, T = temperature of gas = 25 °C = 273 + 25 = 298 K and R = molar gas constant = 0.082 L atm mol⁻¹K⁻¹.

So, n = PV/RT = 0.757 atm × 0.22 L/(0.082 L atm mol⁻¹K⁻¹ × 298 K) = 0.16654 L atm/24.436  L atm mol⁻¹ = 0.00682 mol.

Since mass of gas m = 0.299 g

and n = m/M where M = molar mass of gas

So, M = m/n

\= 0.299 g/0.00682 mol

= 43.84 g/mol

So, the molar mass of the gas is 43.84 g/mol

Before the development of electrophoresis to separate macromolecules, high-speed centrifugation was used to isolate DNA.

A laboratory procedure called electrophoresis is used to divide DNA, RNA, or protein molecules according to their size and electrical charge. The molecules are moved by an electric current through a gel or other matrix. The technology of electrophoresis is crucial for the separation and examination of nucleic acids. At the lab bench, cloned DNA fragments are frequently isolated and worked with using nucleic acid electrophoresis.

High-speed centrifugation employs centrifugal force to separate particles with various densities or masses suspended in a liquid. High-speed rotation of the solution inside the tube causes each particle's angular momentum to experience centrifugal forces inversely proportionate to its mass.

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Answer: This lab's goal is to investigate the absorbance patterns created by recently discovered moons and planets.

The first moon consists of Lithium and carbon, the second moon consists of sodium and nitrogen. Moving onto the planets, the first planet consists of hydrogen and carbon, and lastly, the second planet is consistent with helium and carbon.

How to explain the lab report

The theory was right; there have been no flaws in the outcome. The astronomical item observed by the spectrometer is the independent variable. The spectrum of any astronomical object is the dependent variable.

Space consists of bodies with different types of the electromagnetic spectrum. This includes high-energy bodies emitting radiation in short wavelengths and extremely short wavelengths such as in UV spectrum, X rays, and gamma rays. Conversely, other bodies might be emitting radiations in the longer wavelengths such as Microwaves and Radio waves.

The element missing from the moons and the planets would be Oxygen. It is to be remembered that Oxygen forms the base of the sustenance of life forms on Earth and forms an indispensable part of the carbon cycle. In the absence of oxygen, these planets and moons remain lifeless.

Stars emit heat and light. Along with the heat and light, radiations are emitted by the star. These radiations travel outward from stars and work as the signature of the stars. By analyzing the radiations from the stars, scientists back on Earth could deduce the physical conditions in the heart of a star including its constitution, temperature, and surface conditions.

The knowledge of the constitution of the elements making up the moon or planet is necessary to ascertain the life-sustaining capability of the same.

Answer: This lab's goal is to investigate the absorbance patterns created by recently discovered moons and planets.

The first moon consists of Lithium and carbon, the second moon consists of sodium and nitrogen. Moving onto the planets, the first planet consists of hydrogen and carbon, and lastly, the second planet is consistent with helium and carbon.

How to explain the lab report

The theory was right; there have been no flaws in the outcome. The astronomical item observed by the spectrometer is the independent variable. The spectrum of any astronomical object is the dependent variable.

Space consists of bodies with different types of the electromagnetic spectrum. This includes high-energy bodies emitting radiation in short wavelengths and extremely short wavelengths such as in UV spectrum, X rays, and gamma rays. Conversely, other bodies might be emitting radiations in the longer wavelengths such as Microwaves and Radio waves.

The element missing from the moons and the planets would be Oxygen. It is to be remembered that Oxygen forms the base of the sustenance of life forms on Earth and forms an indispensable part of the carbon cycle. In the absence of oxygen, these planets and moons remain lifeless.

Stars emit heat and light. Along with the heat and light, radiations are emitted by the star. These radiations travel outward from stars and work as the signature of the stars. By analyzing the radiations from the stars, scientists back on Earth could deduce the physical conditions in the heart of a star including its constitution, temperature, and surface conditions.

The knowledge of the constitution of the elements making up the moon or planet is necessary to ascertain the life-sustaining capability of the same.

Answer:

a: cells

Explanation:

just did it. your welcome have a nice day

answer :- The smallest unit of life that conducts all life function are cell

A precipitation reaction occurs when 50. 0 mL of 0. 50 M BaCl₂ is mixed with 75. 0 mL of 0. 75 M Na₂CO₃ (aq). The only precipitate is the BaCO₃ (s) formed. (a) The balanced chemical equation is BaCl₂ + Na₂CO₃ → BaCO₃ + 2NaCl. (b) The limiting reagent is Na₂CO₃.

The balanced chemical equation is the equation in which the number of atoms on the reactant side is equal to the number of atoms on the product side in an equation.

Now we have to write the balanced equation

BaCl₂ + Na₂CO₃ → BaCO₃ + 2NaCl

To calculate number of moles when molarity and volume are given as:

Number of moles = Molarity × Volume

Now,

Number of moles of BaCl₂ = Molarity  × Volume

                                             = 0.50 M  × 0.05 L         [1 ml = 0.001 L]

                                             = 0.025 moles

Number of moles of Na₂CO₃ = Molarity  × Volume

                                                = 0.75 M × 0.075 L     [1 ml = 0.001 L]

                                                = 0.05625 moles

The limiting reagent is Na₂CO₃ here.

Thus from the above conclusion we can say that A precipitation reaction occurs when 50. 0 mL of 0. 50 M BaCl₂ is mixed with 75. 0 mL of 0. 75 M Na₂CO₃ (aq). The only precipitate is the BaCO₃ (s) formed. (a) The balanced chemical equation is BaCl₂ + Na₂CO₃ → BaCO₃ + 2NaCl. (b) The limiting reagent is Na₂CO₃.

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Disclaimer: The question was given incomplete on the portal. Here is the complete question.

Question: A precipitation reaction occurs when 50. 0 mL of 0. 50 M BaCl₂ is mixed with 75. 0 mL of 0. 75 M Na₂CO₃ (aq). The only precipitate is the BaCO₃ (s) formed.

a) Write the balanced equation that describes this reaction.

b) Which chemical is the limiting reactant

After calculating EMF  of the following cell we conclude:

EMF of the cell = 1.471 V.

Given, we have  two half cells,

Ag+1(aq)  + e-1  --->  Ag(s)  reduction  Eo = 0.80 V

Zn+2(aq)  + 2e-1  ---> Zn(s)  oxidation  Eo = -0.76

The net cell reaction is  2 Ag+1(aq) + Zn(s) ---- > 2Ag(s)  + Zn+2(aq)

As, reduction potential of Zn is lower, it undergoes oxidation.

We know, Ecell = Eo reduction - Eo oxidation  = 0.80 - (-0.76)  = 1.56 V

Now. we know    EMF = Eo cell - (0.0591 / n) log[anode]/[cathode], where n is number of electrons transferred

EMF = 1.56 - (0.0591 /2) log0.1/(0.01)^2 = 1.56 - (0.0591 /2) log10^3

EMF = 1.56 - (0.0591/2) *3  = 1.56 - 0.08865  = 1.471 V

What is EMF?

Electromagnetic fields are referred to as EMFs.

These are a kind of energy produced by the motion of electrically charged particles.

The earth's magnetic field and other natural sources, including the sun, as well as man-made ones like electrical wiring, appliances, and electronic devices, all contribute to the presence of EMF in our environment.

The potential negative effects of EMF exposure on health are still being discussed.

According to certain research, prolonged exposure to high EMF levels may raise the risk of developing cancer, neurological conditions, and other illnesses.

Other research, however, has not discovered any solid proof of negative effects.

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According to specific heat capacity, 846.93 kilojoules of heat are required to heat 3. 7 kg of water from 25 Celsius to 79.5° Celsius.

Specific heat capacity is defined as the amount of energy required to raise the temperature of one gram of substance by one degree Celsius. It has units of calories or joules per gram per degree Celsius.

It varies with temperature and is different for each state of matter. Water in the liquid form has the highest specific heat capacity among all common substances .Specific heat capacity of a substance is infinite as it undergoes phase transition ,it is highest for gases and can rise if the gas is allowed to expand.

It is given by the formula ,

Q=mcΔT, on substitution it gives Q= 3.7×10³×4.2×54.5=846.93 kilojoules.

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A solution at pH 1 has more hydrogen ions than a solution at pH 4. The pH of a solution refers to the hydrogen ion concentration.

The concentration of hydrogen ions and the pH of a solution are inversely proportional. This means that the higher the hydrogen ion concentration, the lower the pH, and vice versa.

A solution at pH 1 will have more hydrogen ions than a solution at pH 4.The pH of a solution is defined as the negative logarithm of the hydrogen ion concentration. The equation for calculating the pH of a solution is given as follows:

\($$pH = -\log_{10}[H^+]$$\)

In this equation, [H⁺] is the hydrogen ion concentration in moles per liter (mol/L) of solution. A change of 1 pH unit corresponds to a 10-fold change in the hydrogen ion concentration.

Therefore, if a solution has a pH of 1, it has a hydrogen ion concentration of 0.1 mol/L.

If a solution has a pH of 4, it has a hydrogen ion concentration of 0.0001 mol/L. Thus, a solution at pH 1 has more hydrogen ions than a solution at pH 4.

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Answer:

Longest wavelength visible: red

Shortest wavelength visible: violet

The cosine function of a chemical reaction that occurs at temperatures between 40 and 180 degrees Celsius is \(f (t) = -70\cos \left(\frac{\pi}{6}\right)t+110\).  Option c is the correct expression.

A cosine function's amplitude is equal to half the vertical distance between its highest and lowest points. The distance between the tallest point and the center line is equal to this.  This is of the form f (t) = A cos (bt)+k where A is the wave amplitude, t is the time period, and k is the vertical displacement.

In this problem, the temperature is measured by f(t), which ranges from 40 to 180 degrees Celsius. Then the temperature is not negative. The amplitude will be,

\(A=\frac{|180-40|}{2}=70\)

Given the time period is 12 hours.

\(\begin{aligned}\text{Period}&= \frac{2\pi}{b}\\12&= \frac{2\pi}{b}\\b&= \frac{2\pi}{12}\\b&=\frac{\pi}{6}\end{aligned}\)

When, t = 0, the wave must be at its lowest point. Then, f(t)=40. Find k using this.

\(\begin{aligned}f(t=0)&=40\\40&=-70\cos\left(\frac{\pi}{6}\times 0\right)+k\\40&=-70+k\\k&=110\end{aligned}\)

The required cosine function will be of the form, \(f (t) = -70\cos \left(\frac{\pi}{6}\right)t+110\)

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The optimal beverage for replacing fluids during exercise depends on the duration and intensity of the activity. For shorter and low-intensity exercises, water is generally a good choice. However, for longer and more intense exercise sessions, sports drinks that contain electrolytes and carbohydrates can be beneficial.

During exercise, it is crucial to stay hydrated to maintain performance and prevent dehydration. The optimal beverage for replacing fluids during exercise depends on several factors.

For shorter duration and low-intensity activities, water is generally a good choice for hydration. It is easily accessible, inexpensive, and helps to quench thirst. Water is also calorie-free, making it suitable for individuals who are watching their calorie intake.

However, for longer and more intense exercise sessions, sports drinks can be beneficial in replenishing fluids, electrolytes, and energy. Sports drinks contain electrolytes such as sodium and potassium, which are lost through sweat during exercise. These electrolytes help to maintain proper fluid balance in the body and prevent muscle cramps. Additionally, sports drinks provide carbohydrates in the form of sugars, which serve as a source of fuel for the muscles.

It is important to note that individual needs may vary. Factors such as sweat rate, exercise duration, and personal preferences should be considered when choosing the optimal beverage for fluid replacement during exercise. It is recommended to consult with a healthcare professional or sports nutritionist for personalized advice.

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Water is the optimal beverage for replacing fluids during exercise. In certain cases of prolonged or intense exercise, sports drinks or electrolyte-enhanced beverages can be beneficial.

Water is generally considered the optimal beverage for replacing fluids during exercise. It is essential for maintaining hydration and regulating body temperature. Water helps replenish the fluids lost through sweating during physical activity. For most people engaging in moderate-intensity exercise, water is sufficient to meet their hydration needs.

However, in certain cases, especially during prolonged and intense exercise or in hot and humid environments, electrolytes and carbohydrates may also need to be replaced. In such situations, sports drinks or electrolyte-enhanced beverages can be beneficial. These beverages provide a combination of fluids, electrolytes (such as sodium and potassium), and carbohydrates, which can help replenish lost nutrients and provide energy.

It's important to note that individual hydration needs may vary based on factors such as body size, sweat rate, and exercise intensity. It's always a good idea to listen to your body's signals and drink when you feel thirsty. Additionally, consulting with a healthcare professional or sports nutritionist can provide personalized recommendations based on your specific exercise routine and needs.

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By performing the necessary calculations and comparing the Q/K ratios, we can determine whether calcite or dolomite would form first in the given water sample with [Mg2+]∼0.10 mmol/L.

To determine which mineral, calcite or dolomite, would form first in the given water sample with [Mg2+]∼0.10 mmol/L, we need to calculate the saturation index (SI) for each mineral by comparing the Q/K ratios. The mineral with the higher SI will be more likely to precipitate first.

The saturation index (SI) is calculated by comparing the ion activity product (Q) with the equilibrium constant (K) for a particular mineral. In this case, we have the equilibrium reaction: CaMg(CO3​)2​⇌Ca2++Mg2++2CO3​2−.

For calcite, the Q/K ratio can be calculated using the concentration of Ca2+ and CO3​2− ions in the water sample. Since dolomite contains both Ca2+ and Mg2+ ions, we need to consider the concentration of Mg2+ as well.

By comparing the Q/K ratios for calcite and dolomite, we can determine which mineral has a higher saturation index (SI). The mineral with the higher SI will be more likely to precipitate first.

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Answer:

please mark brainliest!

Explanation:

The element Nickel (Ni) is one of the few ferromagnetic metals. Ferromagnetic means they are attracted to magnets and can be magnetized themselves. Most metals aren't magnetic with the exception of iron, nickel, cobalt, gadolinium, neodymium and samarium.

Answer: ummmmmm

Explanation:

The additional information required to calculate the cost of the drive has been distance between the two cities. Thus, option B is correct.

The distance traveled by the object set the cost per unit has been given by the product of the distance and the cost.

The given question has known cost of the fuel per gallon.

The mileage of the car has been known.

The distance traveled by the car has not been known. Thus, to calculate the cost of the drive, the distance between the two points has to be known. Thus, option B is correct.

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Answer:

7.325 mol.

Explanation:

use the formula n=m/mr

so that makes:

234.4/16*2

which is 7.325 mol.