write two uses of echoes

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Answer:

The balloon will burst before reaching maximum altituted

There is a golden role of solubility, polar solute dissolve in polar solvent and non polar solute dissolve in non polar solvent. Therefore, it was unable to diffuse through the 20 MWCO membrane.

Solutions are a homogeneous mixture of two or more substances. A solution is a homogeneous mixture of solvent and solute molecules. Solvent is a substance that is in large amount in solution. solute is the substance which is in small amount in a solution. There are two types of mixture that is homogeneous and heterogeneous. Solution is a homogeneous solution.

Lee molecular weight of urea is 60.07 . It was unable to diffuse through the 20 MWCO membrane due to urea being unable to fit through the pores of the membrane.

Therefore, it was unable to diffuse through the 20 MWCO membrane.

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Benedict's test should be done to prove it.

Glucose is the main sugar which is mainly found in our blood. it is present in carbohydrate products. People with fructose intolerance should avoid peas because it contain a lot of fructose

Benedict's test is a test where chemicals are used to check the presence of sugar in a particular substance. The sugar that is present in the substance will react with the reducing sugar present in the substance on heating. the positive result is shown by the colour change from clear blue to brick red precipitate.

Pea contains a lot of fructose and it can be proved by doing benedict test.

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The molarity of 0.560 g Mg(NO₃)₂ in 250.0 ml of solution is 0.010 M.

To calculate the molarity of the given solution, we need to first convert the mass of Mg(NO₃)₂ to moles using its molar mass. The molar mass of Mg(NO₃)₂ is 148.31 g/mol, so:
0.560 g Mg(NO₃)₂ x (1 mol Mg(NO₃)₂ / 148.31 g Mg(NO₃)₂ = 0.00377 mol Mg(NO₃)₂
Next, we need to calculate the volume of the solution in liters:
250.0 ml = 0.250 L
Finally, we can calculate the molarity using the formula:
Molarity = moles of solute / volume of solution in liters
Molarity = 0.00377 mol / 0.250 L = 0.015 M
Therefore, the molarity of the given solution is 0.010 M.

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Answer:

the method is fractional distillation

1) a) The apparatus that can be used to separate a mixture of ethanol and water is called a fractional distillation apparatus. It consists of the following components:

b) The method of separation used in this apparatus is called fractional distillation.

2) In fractional distillation, the fractionating column provides additional surfaces for the vaporized components to condense and revalorize.

Distillation flask: This is a round-bottomed flask where the mixture of ethanol and water is initially placed.

Fractionating column: A long column with several glass beads or plates. It provides a large surface area for the vaporized components to condense and revalorize, aiding in the separation process.

Thermometer: It is placed at the top of the fractionating column to monitor the temperature during the distillation process.

Condenser: It is a coiled glass tube connected to the fractionating column. Cold water flows through the condenser, causing the vaporized components to condense back into liquid form.

Receiver flask: This is where the separated components are collected. The receiver flask is placed at the end of the condenser.

b) The method of separation used in this apparatus is called fractional distillation. Fractional distillation is employed when the components of a mixture have similar boiling points. In the case of ethanol and water, they form an azeotropic mixture with a boiling point of around 78.2°C. Simple distillation would not effectively separate these two components because they would boil together and vaporize simultaneously.

In fractional distillation, the fractionating column provides additional surfaces for the vaporized components to condense and revaporize. This repeated condensation and revalorization process allows for more efficient separation. The higher surface area in the fractionating column helps to achieve better separation of the ethanol and water, resulting in a more concentrated sample of ethanol in the distillate collected in the receiver flask.

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Answer:

What can be said about these common forms of sulphur is that;

(B) They will exhibit same chemical properties

Explanation:

Allotropy is the property of an element to exist in two or more forms in the same physical state

Allotropes have several similar chemical  properties but differ in their physical properties, such as the white, pale yellow to totally colorless diamond and the gray graphite

Sulphur can exist in several allotropic forms, and carbon is the only element that has more allotropes than sulphur

The sulphur allotropes includes S₂, S₆, and S₅ have similar chemical properties but different physical properties.

The correct option is;

What can be said about these common forms of sulphur is that they have the same chemical properties

Taking into account the reaction stoichiometry, 109.09 grams of Ag₂S₂O₃ are formed when 125 g AgBr reacts completely.

In first place, the balanced reaction is:

2 AgBr + Na₂S₂O₃ → Ag₂S₂O₃ + 2 NaBr

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

The molar mass of the compounds is:

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

The following rule of three can be applied: if by reaction stoichiometry 375.54 grams of AgBr form 327.74 grams of Ag₂S₂O₃, 125 grams of AgBr form how much mass of Ag₂S₂O₃?

\(mass of Ag_{2} S_{2} O_{3} =\frac{125 grams of AgBrx327.74 grams of Ag_{2} S_{2} O_{3}}{375.54 grams of AgBr}\)

mass of Ag₂S₂O₃= 109.09 grams

Then, 109.09 grams of Ag₂S₂O₃ are formed when 125 g AgBr reacts completely.

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Answer:

This answer I think it is Al,F

Answer:

the forces i think

Explanation:

The absorption of a free moving neutron by the atoms nucleus

(A P E X)

Given what we know, we can confirm that when forming an expanded octet, selenium hexafluo ride will hold 6 pairs of shared electrons around its center selenium atom.

Therefore, given that during an expanded octet formation, the central atom is capable of holding more than 8 valence electrons in its outer shell, the central atom of a selenium hexafluo ride compound will have 12 electrons being shared, which results in 6 pairs, making C the correct answer.

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The fourth ionization energy of zirconium can be represented by the equation Zr⁺³(g) → Zr⁺⁴(g) + e⁻, where Zr⁺³ and Zr⁺⁴ denote gaseous ions with charges +3 and +4, respectively.

The fourth ionization energy of zirconium can be expressed through the following chemical equation:

Zr⁺³(g) → Zr⁺⁴(g) + e⁻

In this equation, Zr⁺³ represents the gaseous ion with a +3 charge, and Zr⁺⁴ represents the gaseous ion with a +4 charge. The arrow indicates the direction of the reaction, and the e⁻ represents an electron.

During the process of the fourth ionization of zirconium, a Zr⁺³ ion gains an additional electron, resulting in the formation of a Zr⁺⁴ ion. This transition from Zr⁺³ to Zr⁺⁴ requires energy, which is referred to as the fourth ionization energy of zirconium.

It's important to note that the ionization energy represents the energy required to remove an electron from a gaseous atom or ion. The gaseous phase is indicated by the (g) notation for both Zr⁺³ and Zr⁺⁴. Overall, the chemical equation above represents the fourth ionization energy of zirconium in the gaseous phase.

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Answer:

3.2 micro gram

Explanation:

because

1kg=1000g

32×10^-10kg=?

=3.2×10^-6g

1g=10^-6micro gram

3.2×10^-6g=?

=3.2 micro gram.

where g- gram

kg- kilogram

Answer:

Mass = 32.69 g

Explanation:

Given data:

Mass of copper = 32 g

Mass of zinc formed = ?

Solution:

Chemical equation:

Cu + Zn(NO₃)₂     →       Cu(NO₃)₂ + Zn

Number of moles of copper:

Number of moles = mass/molar mass

Number of moles = 32 g/ 63.55 g/mol

Number of moles = 0.5 mol

now we will compare the moles of zinc with copper.

           Cu          :           Zn

            1            :            1

          0.5          :         0.5

Mass of Zn:

Mass = number of moles × molar mass

Mass = 0.5 mol  × 65.38 g/mol

Mass = 32.69 g

The dot structure of the compound that is referred to here is shown in  the image attached.

A dot structure, often called a Lewis structure or an electron dot structure, depicts how atoms and valence electrons are arranged in a molecule or ion. Around the atomic symbols, valence electrons are represented by dots.

Each atom's symbol in a dot structure is surrounded by dots that stand in for the atom's valence electrons. The electrons in an atom's outermost shell known as valence electrons participate in chemical bonding.

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Answer:Ocean currents act much like a conveyor belt, transporting warm water and precipitation from the equator toward the poles and cold water from the poles back to the tropics.

Explanation:

Answer:

Explanation:

Ocean currents act much like a conveyor belt, transporting warm water and precipitation from the equator toward the poles and cold water from the poles back to the tropics. 

hope it helps!

Answer: penlalalalaooooaaaaaaaaaaa

Explanation: pen

Answer:

its totally d

Explanation:

Answer:

The volume of the balloon will decrease.

Explanation:

I had some leftover liquid nitrogen so I tried it in my pool.

Answer:

organic chemistry

Explanation:

There are many branches of chemistry. Some of them are physical chemistry, analytical chemistry, inorganic chemistry and organic chemistry.

A chemist is testing the quality of a wine produced by a vineyard. It means he will test the structure, properties, and preparation of wine. All these tests comes under organic chemistry.

Hence, the correct option is (d) "organic chemistry"

Answer:

analytical chemistry

Explanation:

I took the test

Answer:

Tungsten

Explanation:

Answer:

we know that it was the vinegar and baking soda because gas had been created, the gas was held within the bubbles. the gas that was created was called Carbon Dioxide or CO2

If a fatty acid has 20 carbons, ATP will it produce after it completely breaks down into co2 and water would be approximately 129 ATP

During beta-oxidation in the mitochondria, the fatty acid is broken down into two-carbon units called acetyl-CoA, which enters the citric acid cycle to produce ATP. Each round of the citric acid cycle produces 1 ATP, 3 NADH, and 1 FADH2, which enter the electron transport chain to produce more ATP.

Since one fatty acid with 20 carbons produces 10 acetyl-CoA units, it goes through the citric acid cycle 10 times, therefore, it produces 10 ATP, 30 NADH, and 10 FADH2. The NADH and FADH2 produced from beta-oxidation produce more ATP through oxidative phosphorylation in the electron transport chain, producing approximately 2.5 ATP per NADH and 1.5 ATP per FADH2. So, the total ATP produced from the complete breakdown of a fatty acid with 20 carbons would be approximately 129 ATP (10 from the citric acid cycle and 119 from the electron transport chain).

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Answer:

B

Explanation:

B

An aqueous solution of sodium bisulfate (NaHSO4) is acidic. Sodium bisulfate dissociates in water to form the bisulfate ion (HSO4-) and the sodium ion (Na+). This reaction can be represented by the following chemical equation:

NaHSO4 (s) → Na+ (aq) + HSO4- (aq)

The bisulfate ion is a weak acid, and it dissociates further in water to form the sulfate ion (\(SO4^{2-}\)) and the hydrogen ion (H+):

HSO4- (aq) → H+ (aq) + SO42- (aq)

This additional dissociation of HSO4- increases the concentration of H+ ions in the solution, making the solution acidic. The presence of H+ ions in the solution means that the solution has a pH of less than 7, which is the definition of an acidic solution.

What is an aqueous solution?

An aqueous solution is a sort of mixture in which one or more solutes have been dissolved in water as the solvent. Any kind of material, including salts, acids, bases, and sugars, can serve as solutes. The word "aqueous" describes a solution's water content. These kinds of solutions are prevalent in biology and chemistry and are essential to numerous industrial and natural processes.

An aqueous solution is one in which water serves as the solvent. In chemical equations, it is often represented by adding to the appropriate chemical formula. For instance, Na⁺ + Cl⁻ might be used to depict a solution of table salt, or sodium chloride, in water.

Water, which makes up around 70% of the mass of the human body and is necessary for life, serves as the solvent in aqueous solutions.

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Answer:

The difference between normal salt and acid salt is that acid salt is basically made up of strong acid and also including a weak base. However normal salt is practically made up of strong base or even a weak acid and also a weak base. Acid salt or in a more logical term known as acidic salt ionises into a type of form of H + ions which is more than OH- ions, which is in a water solution. But even than normal salt ionises into a form of eqaul number of H+ ions and OH- ions in this so called water solution.

Answer: it's group 14

Explanation:

The common group name for carbon is Group 14 (IVa) on the periodic table.

Answer:

A. The total mass of the reactants in a reaction equals the total mass of the product(s).

Explanation:

The law of conversation of matter tells us that in a chemical reaction, matter is never created or destroyed, it's simply converted from one form to another. So the mass of reactants should always equal the mass of the products in a chemical reaction.