Why is red the only color seen after white light passes through the filter?InformationAn illustration shows white light passing through a color filter and exiting as red light.Answer options with 5 optionsA.The color filter adds red color to the light.B.The color filter absorbs all colors except red light.C.The color filter absorbs the red color.D.Only primary colors are absorbed by filters.E.Red light has the longest wavelength.

No, Ag₂SO₄ will not precipitate when 100ml of .050M AgNO3 is mixed with 10ml of 5x10-2 m Na₂SO₄ solution because the precipitate is made only in an aqueous solution.

Precipitation is the solid extract that is collect in a place. Precipitate is the concentration of the substance in a solution in a specific place.

Thus, No, Ag₂SO₄ will not precipitate when 100ml of .050M AgNO3 is mixed with 10ml of 5x10-2 m Na₂SO₄ solution because the precipitate is made only in an aqueous solution.

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Answer: D

Explanation: for question 2 the answer is D and for 3 it is A. That is very easy and the muscular systen has nothing to do with breathing.

Answer:

2: d

3: b

i think, im not too sure

The heat released by 100g of the compound is  2.8 x10^3 kJ .

We know that the process of combustion is the process that enables a substance to be burnt in air. Heat and light can be produced in the process of the combustion.

Number of moles of the Methylhydrazine =  mass/ molar mas = 100.0g/46 g/mol = 2.17 moles

If from the balanced reaction equation;

1 moles of Methylhydrazine produces 1.30x10^3 kJ

Then 2.17 moles of Methylhydrazine produces  2.17 moles *  1.30x10^3 kJ/1 mole

= 2.8 x10^3 kJ of heat.

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Answer:

The answer of the scientific STATEMENT is" Appears That Ants Live In Colonies."

The control objective of a morning shower is to provide a comfortable and refreshing start to the day, and the manipulated variables at your disposal can be adjusted to achieve this objective.

What is Measurement?

Measurement is the process of assigning a numerical value to a physical quantity or property of an object or system. Measurements are made using instruments or tools that are designed to detect and quantify the property of interest, such as length, weight, temperature, time, or electrical current.

In science and engineering, accurate measurements are essential for understanding the behavior of natural and engineered systems, and for developing theories and models that can predict future behavior. Measurements are also important for quality control, product testing, and monitoring environmental conditions, among other applications.

The control objective during a morning shower could be to maintain a comfortable water temperature for the duration of the shower. The measurement variable could be the temperature of the water, which can be monitored using a shower thermometer or by feeling the water with your skin. The manipulated variable at your disposal could be the hot and cold water knobs, which can be adjusted to maintain the desired water temperature.

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Answer:

Rock A will have far more chemical weathering than Rock B due to the rise in area effect

Explanation:

Rock A undergoes both Physical and Chemical weathering. So, thanks to physical weathering there'll appear cracks within the rock, which can, in turn, increase the area of rock on which weathering is occurring. So, Chemical weathering will happen much faster now as there's a rise in the area. within the case of Rock B, there's only chemical weathering therefore the increase in the area won't be that very much like compared to Rock A.

Answer:

41826.05 Calories

Explanation:

1 J = 0.239006 Calories

175 KJ

= 175 x 1000 J

= 175000 J

175000 J to Calories

= 175000 x 0.239006

= 41826.05 Calories

Answer: 41.8

Explanation:

Acellus verified ✅

Answer:

2.34x108 I guess!!

Explanation:

check ittt

The general equation for this reaction is as follows: CO3^2- + 2H+ → CO2 + H2O.

The test for trioxocarbonate (IV), also known as carbonate (CO3) ions, involves the reaction with an acid. When carbonate ions react with an acid, carbon dioxide gas (CO2) is produced, which can be observed through effervescence or bubbling. The general equation for this reaction is as follows:

CO3^2- + 2H+ → CO2 + H2O

In this equation, CO3^2- represents the carbonate ion, and H+ represents the hydrogen ion from the acid. The reaction produces carbon dioxide gas (CO2) and water (H2O).

For example, if hydrochloric acid (HCl) is used in the test, the reaction equation would be:

CO3^2- + 2HCl → CO2 + H2O + 2Cl-

In this case, the carbonate ions react with hydrochloric acid to produce carbon dioxide gas, water, and chloride ions.

It's important to note that the specific acid used in the test may vary depending on the experimental setup. Common acids used include hydrochloric acid (HCl), sulfuric acid (H2SO4), or acetic acid (CH3COOH).

The reaction equation remains the same, with the acid being consumed in the reaction and contributing to the formation of water and an anion corresponding to the acid used (such as chloride, sulfate, or acetate ions).

By observing the effervescence or bubbling produced during the reaction, we can confirm the presence of carbonate ions in the sample being tested.

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Answer:

Cation

Anion

Cation

Cation

Explanation:

If an atom, or atoms, has a balanced number of electrons (negative charge) and protons (positive charge) they are neutral overall. However, if they are not balanced, they will be charged. These charged species are called ions.

What is an anion?

An anion has more electrons than protons, consequently giving it a net negative charge. For an anion to form, one or more electrons must be gained, typically pulled away from other atoms with a weaker affinity for them. The number of electrons gained, and so the charge of the ion, is indicated after the chemical symbol, e.g. chlorine (Cl) gains one electron to become Cl-, whilst oxygen (O) gains two electrons to become O2-.

What is a cation?

A cation has more protons than electrons, consequently giving it a net positive charge. For a cation to form, one or more electrons must be lost, typically pulled away by atoms with a stronger affinity for them. The number of electrons lost, and so the charge of the ion, is indicated after the chemical symbol, e.g. silver (Ag) loses one electron to become Ag+, whilst zinc (Zn) loses two electrons to become Zn2+.

Source: Cation vs Anion: Definition, Chart and the Periodic Table By  

Karen Steward (PhD)

Answer:

C) Mass

Explanation:

Answer:

F2 (g)

Explanation:

Edg 2021

Answer:

F2 g

Explanation:

Answer: D

Explanation: I took the quiz! Module 04.06! Have a good day!

Answer: Water level remains same as there is no difference in concentration gradient.

Explanation: When concentration inside and outside of the cell membrane is the same, no transport takes place and the levels will remain the same.

Answer:

CH3CH2CH2CH2CH2I > CH3CH2CH2CH2I > CH3CH2CH2I > CH3CH2I

Explanation:

The magnitude of London dispersion forces increases with increasing molecular mass and chain length. This is as a result of increase in the surface area of the molecule.

Hence, boiling points of molecules increase with increase in magnitude of London dispersion forces. This is the reason behind the ordering of molecules in the answer above.

CH₃CH₂CH₂CH₂CH₂I > CH₃CH₂CH₂CH₂I > CH₃CH₂CH₂I > CH₃CH₂I

The magnitude of London dispersion forces increases with increasing molecular mass and chain length. If there is an increase in chain length, there will be an increase in the strength of electrostatic attractions between molecules. This is as a result of increase in the surface area of the molecule.

Thus, boiling points of molecules increase with increase in magnitude of London dispersion forces.

Therefore, the order for boiling point will be as follows:

CH₃CH₂CH₂CH₂CH₂I > CH₃CH₂CH₂CH₂I > CH₃CH₂CH₂I > CH₃CH₂I

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Answer:

milliliter

Explanation:

smallest form of measuring volume from all the available choices

The element that has chemical properties most similar to sodium is d. rubidium.

What is rubidium?

Rubidium is in the same group (group 1) as sodium in the periodic table and has similar chemical properties, such as reactivity with water and the tendency to form ionic compounds with halogens. Magnesium, oxygen, and phosphorus are not in the same group as sodium and have different chemical properties.

What is periodic table?

The periodic table is a tabular display of all known chemical elements, arranged according to their atomic structure and properties. It is arranged in rows and columns, with elements placed in order of increasing atomic number, which is the number of protons in an atom's nucleus. The periodic table is a powerful tool for predicting the chemical behavior of elements and for understanding the relationships between different elements. It is used extensively in chemistry, physics, and other sciences to help understand the properties and behavior of different elements, and to guide research and development in many different fields.

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Answer:

nCl= 0,062x3/2=0,093(mol)

Explanation:

H2O - Tetrahedral with four electron pairs and three atoms. The shape is bent and the compound is polar

SF2 -  Tetrahedral with 18 electron pairs and three atoms. The shape is bent and the compound is polar.

NI3 -  Tetrahedral with 12 electron pairs and three atoms. The shape is trigonal pyramidal and the compound is polar

SiBr4 -  Tetrahedral with 16 electron pairs and three atoms. The shape is tetrahedral and the compound is non polar

SO3 -  Tetrahedral, The shape is bent and the compound is polar

CO2 - Tetrahedral, The shape is linear and the compound is non polar

Diagrams known as "electrode diagrams" display an atom's valence electrons as dots scattered around the symbol of the element.

Lewis Dot Structure is another name for the electron dot diagram. It is a figure that depicts the distribution of electrons (both lone pairs and shared pairs) between the atoms in a molecule.

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The statement that correctly describes the quantum number n is, "an electron with n = 2 is at a higher energy level than any other energy levels.

Generally, the set of numbers that is used to locate the position and energy of the electron in an atom are known as quantum numbers. Basically, there are four types of quantum numbers, which are named as, principal, azimuthal, magnetic and spin quantum numbers.

In any atom, there are a total of four quantum numbers: the principal quantum number (n), the orbital angular momentum quantum number (l), the magnetic quantum number (ml), and the electron spin quantum number (ms) which generally describes the characteristic properties of an atom.

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Answer:

To find the pH of a solution that contains a strong acid like HCl, you can use the equation:

pH = -log[H+]

Where [H+] is the concentration of hydrogen ions in moles per liter. In this case, you know the concentration of HCl and the volume of water, so you can calculate the concentration of hydrogen ions by using the equation:

[H+] = (0.0425 moles HCl) / (6.50 liters water) = 0.0653846 moles/liter

Finally, you can calculate the pH:

pH = -log[0.0653846 moles/liter] = 1.18

So the pH of the solution is 1.18.

Explanation:

Do you want to know shot trick also?

According to the concept of stoichiometry and balanced chemical equation,165 g of carbon dioxide is produced on burning of 120 g of methanol.

It is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.

Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.

According to the given chemical equation, as 64 g of methanol produces 88 g of carbon dioxide .

∴120 g of methanol produces 120×88/64=165 g of carbon dioxide.

Thus, 165 g of carbon dioxide is produced by 120 g of methanol.

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Potential energy is stored energy that is affected by the relative location of different components of a system. When a spring is squeezed or expanded, its potential energy increases.

Potential energy is the energy retained by an object as a result of its location relative to other objects, internal stresses, electric charge, or other variables.  Although it has ties to the ancient Greek scholar Aristotle's idea of potentiality, the word potential energy was coined by the 19th-century Scottish engineer and physicist William Rankine.

The gravitational potential energy of an object, the elastic potential energy of a stretched spring, and the electric potential energy of an electric charge in an electric field are all examples of common kinds of potential energy. The joule, denoted by the sign J, is the measure of energy in the International System of Units (SI).

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Magnesium reacts quickly with HCl while iron reacts more slowly with HCl. Copper does not react at all with HCl.

We have to  recall that the reactivity of metals is determined by the position of the metal in the electrochemical series. This is an  arrangement of metals from more reactive to least reactive.

Magnesium and iron  reactwith dilute HCl to give hydrogen gas but the rates of reaction differ. Magnesium reacts fastest with HCl followed by iron but copper does not react with HCl at all.

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Concentration of solution having pH 6.45 is 3.55 * 10 -7 M. Concentration of solution having pH 5.28 is 1.90 * 10 -9 M and pH of the solution is 5.45.

pH of a solution is the measure of hydrogen ion concentration, which in turn is a measure of its acidity. Pure water dissociates slightly into equal concentrations of hydrogen and hydroxyl (OH−) ions.

Concentration of a solution is a measure of the amount of solute that has been dissolved in a given amount of solvent or solution. A concentrated solution is one that has a relatively large amount of dissolved solute. A dilute solution is one that has a relatively small amount of dissolved solute

a.   The pH of a solution is 6.45

     pH = 6.45

     pH= -log [H+]

      = \(10^-6.45\)

    [H+] = 3.55 * 10 -7 M

b. A solution has a pH of 5.28, find the [H+] and [OH-] concentration.

    pH = 5.28

    pH= -log [H+]

    = \(10^-5.28\)

    [H+] = 5.25 * 10 -6 M

    As [H+] [OH-} = 10-14

     [OH-] = 10-14 / [H+]

               = 10 -14 /  5.25 * 10 -6

                = 1.90 * 10 -9 M

   As pH is less than 7 the solution is acidic.

c.  If a solution has a concentration of 3.5 . 10-6 M

    here calculated pH = 5.45

    As pH is less than 7, the solution is acidic.

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The bactericidal activity of sanitizers prepared from the water will be reduced if the hardness or pH of the water used to prepare EO water or bleach solutions are increased.

Temperature, pH, relative humidity, and water hardness are other physical and chemical variables that affect disinfection processes. For instance, most disinfectants become more active as the temperature rises, but there are some exceptions.

The harder your water is, the less effective cleaning products will be since it will be difficult to make a soapy lather. Scale, which are crusty deposits made by hard water, can build up in your dishwasher or washing machine. Detergent works effectively when used with soft water.

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When fossil fuels burn, several forms of energy are produced, including:

Heat energy: The primary form of energy released during fossil fuel combustion is heat. Fossil fuels contain chemical energy stored for millions of years, and when they burn, this energy is released in the form of heat. The heat energy can be harnessed for various purposes, such as heating buildings or generating steam to drive turbines.

Light energy: Burning fossil fuels can also produce light energy in the form of flames or glowing embers. This light energy is a byproduct of combustion.

Mechanical energy: Heat generated by burning fossil fuels can be converted into mechanical energy. This is typically achieved by using heat to produce steam, which drives a turbine connected to a generator. The rotating turbine converts the heat energy into mechanical energy, which is further transformed into electrical energy.

Electrical energy: Through the process described above, burning fossil fuels can ultimately generate electrical energy. The mechanical energy produced by the turbine is converted into electrical energy by the generator. Electrical energy can power various devices, appliances, industries, and infrastructure.

It's critical to note that while burning fossil fuels can produce useful forms of energy, it also results in the release of carbon dioxide and other greenhouse gases. This contributes to climate change and environmental concerns. As a result, there is a global shift towards cleaner and renewable energy sources to mitigate these negative impacts.

To prepare a 0.12 M solution of FeCl₃, the amount of solid FeCl₃ to be dissolved in a given volume of solvent will be 9.72 grams.

Given,

Molarity of FeCl₃ (M)= 0.12 M

The molecular weight (m) of FeCl₃ is  = 162 gm

The volume of the solution (V) to be prepared is =500 ml

The amount of FeCl₃ to be dissolved to make a 0.12 M solution is= x

So,

MV= x ÷ m × 1000

0.12× 500 = x ÷ 162 × 1000

x = 60 × 162 ÷ 1000

x= 9.72 gm

So 9.72 grams of FeCl₃ is dissolved to make 500 ml of 0.12 M solution.

For preparing 0.4 M HCl from 4M HCL:

If we need to make 500 ml of solution with 0.4M of HCL, then we use the formula:

M₁V₁= M₂V₂

0.4 × 500= 4 × x

x= 50 ml

So 50 ml of 4M HCL is taken to make 0.4 M HCL.

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The kind of substance which the original white powder that is isolated from lemon juice is: A an acid.

pH simply refers to an abbreviation for the power of hydrogen ions and it can be defined as a measure of the molar concentration of hydrogen ions in a particular chemical substance or solution.

This ultimately implies that, a pH scale can be used to measure and specify the acidity, neutrality or basicity (alkalinity) of any chemical substance or solution.

On a pH scale, a chemical substance or solution with a pH of 7 is neutral, a chemical substance or solution with a pH below 7 is acidic, and a chemical substance is basic (alkaline) when it's pH is above 7.

In this scenario, this original white powder is an acid because it has a pH of 3.0.

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Answer:

the molarity of the solution is 0.25 M.

Explanation:

To calculate the molarity of a solution, we need to know the amount of solute in moles and the volume of the solution in liters.

The first step is to calculate the amount of KOH in moles using its molar mass. The molar mass of KOH is the sum of the atomic weights of potassium (39.1 g/mol), oxygen (16.0 g/mol), and hydrogen (1.0 g/mol):

Molar mass of KOH = 39.1 g/mol + 16.0 g/mol + 1.0 g/mol = 56.1 g/mol

The amount of KOH in moles is:

moles of KOH = mass of KOH / molar mass of KOH

moles of KOH = 42.1 g / 56.1 g/mol

moles of KOH = 0.750 moles

Now that we know the amount of KOH in moles, we can calculate the molarity of the solution:

Molarity = moles of solute / liters of solution

Molarity = 0.750 moles / 3.0 L

Molarity = 0.25 M

Therefore, the molarity of the solution is 0.25 M.

Answer: 9.23 moles of solute

Explanation: It's a hard explanation so you can just have the answer.