Which of the following is incorrect regarding So2?
-it is a respiratory irritant
-it can adversely affect plant tissue
-it has only anthropogenic sources
-it results from the combustion of coal and oil
-it is a corrosive gas

Answer:

1043

Explanation:

Convert 104.3 Centimeter to Millimeters (cm to mm) with our conversion calculator and conversion tables. To convert 104.3 cm to mm use direct conversion formula below.

104.3 cm = 1043 mm.

Answer:

1043

Explanation:

Multiply 104.3 by 10

Answer:

Low pressure ; stormy

Explanation:

The question is incomplete; the complete question is;

A company is trying to design new carbon monoxide detectors that register carbon monoxide at a level of 5 parts per million (ppm). The company engineers decide that the detector needs improvement and start designing new versions. They develop each new version based on new ideas and the features that worked in the previous one. They continue testing each new version in the process. Which process does this best describe?

making trade-offs

the iterative design process

process and system optimization

evaluating advantages and disadvantages

Answer:

the iterative design process

Explanation:

The Iterative design is a circular design process which comprises of models that are regularly evaluated and improved  based on the results of testing of previous models or versions.

Hence, when the company is involved in developing a new version of the carbon monoxide detector by evaluating the older  versions and continue testing each new version, they are involved in the circular process of iterative design.

Answer:

Burning of paper is not a physical change.It is chemical change as ash is formed in the process which is new compound and oxides of carbon are also released during the process!

(b) Acetic acid and sοdium acetate, Ka = 1.8 x 10-5. Acetic acid, also known as ethanoic acid, is a byproduct of fermentation and gives vinegar its odor. It can cause skin burns and is used in laboratory settings and as glacial acetic acid. It forms a buffer system with sodium acetate for a pH of 5.0.

Acetic acid is alsο knοwn as ethanοic acid, ethylic acid, vinegar acid, and methane carbοxylic acid. Acetic acid is a byprοduct οf fermentatiοn, and gives vinegar its characteristic οdοr. Vinegar is abοut 4-6% acetic acid in water.

Mοre cοncentrated sοlutiοns can be fοund in labοratοry use, and pure acetic acid cοntaining οnly traces οf water is knοwn as glacial acetic acid. Dilute sοlutiοns like vinegar can cοntact skin with nο harm, but mοre cοncentrated sοlutiοns will burn the skin. Glacial acetic acid can cause skin burns and permanent eye damage, and will cοrrοde metal.

Acetic acid and sοdium acetate fοrm a buffer system with a pKa value clοse tο the desired pH οf 5.0. The pKa value οf acetic acid is arοund 4.75, which is in the range οf the desired pH. This makes it the best chοice fοr preparing a buffer with a pH οf 5.0.

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One kilogram over 1000 grams is the valid conversion factor. So the correct option is D.

Unit conversion is the expression of the same feature in a different unit of measurement. Time, for example, can be stated in minutes rather than hours, and distance can be translated from miles to kilometers, feet, or any other length measurement.

Measurements are frequently stated in one set of units, such as feet, but need alternative units, such as chains. A conversion factor is a numerical equation that allows for the equal exchange of feet and chains.

The AA conversion factor is a number that is used to multiply or divide one set of units into another. When converting to an equivalent value, the proper conversion factor must be utilized. To convert inches to feet, for example, the suitable conversion value is 12 inches equal to 1 foot. The suitable conversion value for minutes to hours is 60 minutes = 1 hour.

Therefore, the correct option is D.

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Answer:

one kilogram over 1,000 grams

Explanation:

I got it right on the test.

It is possible to recover 44.01 g of iron from a 115 g sample of Fe2(CO3)3.

We need to first calculate the molar mass of Fe2(CO3)3.

The formula below can be used to determine the molar mass of Fe2(CO3)3:

2 x atomic mass of Fe + 3 x (atomic mass of C + 3 x atomic mass of O)

= 2 x 55.85 g/mol + 3 x (12.01 g/mol + 3 x 16.00 g/mol)

= 2 x 55.85 g/mol + 3 x (12.01 g/mol + 48.00 g/mol)

= 2 x 55.85 g/mol + 3 x 60.01 g/mol

= 2 x 55.85 g/mol + 180.03 g/mol

= 291.73 g/mol

Therefore, the molar mass of Fe2(CO3)3 is 291.73 g/mol.

Next, we need to calculate the amount of Fe2(CO3)3 in moles, which can be calculated as follows:

moles of Fe2(CO3)3 = mass of Fe2(CO3)3 / molar mass of Fe2(CO3)3

= 115 g / 291.73 g/mol

= 0.394 mol

Finally, we may use stoichiometry to determine the weight in grams of iron. We know that there are two moles of Fe for every one mole of Fe2(CO3)3 based on the chemical formula for Fe2(CO3)3. Consequently, the quantity of iron in moles is:

moles of Fe = 2 x moles of Fe2(CO3)3

= 2 x 0.394 mol

= 0.788 mol

The molar mass of iron is 55.85 g/mol. Therefore, the mass of iron in grams is:

mass of Fe = moles of Fe x molar mass of Fe

= 0.788 mol x 55.85 g/mol

= 44.01 g

Therefore, It is possible to recover 44.01 g of iron from a 115 g sample of Fe2(CO3)3.

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Objects feels warmer because more light is absorbed

Object appears white because all light is reflected

Object appears black because all light is absorbed

Object feels cooler because less light is absorbed

Reflection of light can affect the color of the material seen in several ways, depending on the properties of the material and the angle of incidence of the light.

When light strikes a surface, some of it is absorbed by the material, while the rest is reflected. The reflected light can be either specular, meaning it reflects at a single angle, or diffuse, meaning it reflects in multiple directions. The color of the material seen depends on the wavelengths of light that are reflected back to the observer.

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The pressure inside the vessel would be 15 atm if we increased the temperature of the vessel to 450 K at constant volume. As a result, Option D is right.

According to the Ideal Gas Law, the pressure inside the vessel is directly proportional to the temperature (Kelvin) and the number of moles of gas present in the vessel, if the volume is kept constant. In other words, if we increase the temperature of the gas, the pressure inside the vessel will also increase.

The Ideal Gas Law equation is:

Where:

Given that V is constant, we can rearrange the equation to solve for P:

Assuming that n and V are constants, then P is directly proportional to T. So, if the temperature increases by a factor of T2/T1, the pressure will increase by the same factor.

Let's say the initial pressure was 10 atm, and the initial temperature was 400 K. Then P1/T1 = 10 atm/400 K.

When the temperature is increased to 450 K, the pressure will become:

So, when the temperature of the vessel is increased to 450 K at constant volume, the pressure inside the vessel will increase, and the answer is "d. 15 atm".

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Answer:

#1

The temperature that this happens is called the freezing point and is the same temperature as the melting point. As more energy is put into the system, the water heats up, the molecules begin moving faster and faster until there is finally enough energy in the system to totally overcome the attractive forces.

Explanation:

#2

Heating a liquid increases the speed of the molecules. An increase in the speed of the molecules competes with the attraction between molecules and causes molecules to move a little further apart. ... A decrease in the speed of the molecules allows the attractions between molecules to bring them a little closer together.

A) Out of the given options, Pyruvate is the compound that is not a component of the citric acid cycle.

The citric acid cycle, also known as the Krebs cycle or the tricarboxylic acid (TCA) cycle, is a central metabolic pathway that occurs in the mitochondria of cells. It is responsible for the oxidation of acetyl-CoA derived from various fuel sources, generating energy in the form of ATP and producing NADH and FADH2.

Pyruvate, which is a product of glycolysis, serves as the starting point for the citric acid cycle. It enters the cycle by being converted into acetyl-CoA through a series of enzymatic reactions.

On the other hand, the compounds α-Ketoglutarate, Succinate, and Malate are all intermediates of the citric acid cycle. They are involved in various steps of the cycle, participating in the generation and transfer of energy-rich electrons and the production of ATP and reduced coenzymes.

Therefore, out of the given options, Pyruvate is the compound that is not a component of the citric acid cycle.

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Hello,

I hope you and your family are doing well!

The nuclear reactions that occur in the Sun are fusion reactions.

Please rate this 5 stars and brainliest if you find it helpful.

Happy Holidays!

According to the claim, the substance in question is barium chloride, also known as BaCl₂.

For the purpose of overcoming these unfavorable design patterns, the SOLID tenets were created. Reducing dependencies allows engineers to alter one component of software without affecting others, which is the main objective of the SOLID principles. They are also meant to make designs simpler to comprehend, update, and expand.

A solid is distinguished by its rigidity and tolerance to external forces. A solid substance, unlike a liquid, doesn't quite flow to conform to the form of its containers or, like a gas, expand to cover the entire space.

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The complete question is-

You are presented with a white solid and told that due to carless labeling it is not clear if the substance is barium chloride, lead chloride or zinc chloride. When you transfer the solid to a beaker and add water the solid dissolves to give a clear solution. Next a Na2SO4 (aq) solution is added and a white precipitate forms. What is the identity of the unknown white solid?

a). BaCl₂

b). CaCO₃

c). MgCl₂

Answer:

F = 130 N

Explanation:

We use the formula F = ma  

∴ F is force, m is mass and a is acceleration

F = ?

m = 65 kg

a = 2 m/\(s^{2}\)

Substituting the values in the equation:

F = 65 x 2

F = 130 N

Answer:

Cell Y Only

Explanation:

Answer:

0.62 moles

Moles of potassium sulfide is 0.62 moles

Explanation:

please mark me as brainlist

The correct option for the limiting reactant in an equation is; The reactant that is present in the least amount and will therefore dictate how much product is able to be made. Option B is correct.

The limiting reactant is the reactant that is completely consumed first during a chemical reaction. It determines the maximum amount of product that can be formed. The reactant present in the least amount restricts the reaction because the reaction can only proceed until that reactant is completely used up. The other reactants may be left over or in excess after the reaction is complete.

The reactant with the lowest number coefficient in front of it and the reactant that has the lowest molecular weight are not accurate definitions of the limiting reactant. The coefficients in front of the reactants represent the stoichiometric ratio, and the molecular weight of a reactant does not determine its limiting nature in a reaction. The limiting reactant is solely determined by the amount of each reactant present in the reaction.

Hence, B. is the correct option.

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--The given question is incomplete, the complete question is

"What is the limiting reactant in an equation? A) the reactant with the lowest number coefficient in front of it. B) the reactant that is present in the least amount and will therefore dictate how much product is able to be made. C) the reactant that has the lowest molecular weight.

Valence electrons are the electrons present in the outermost shell of an atom and participate in chemical bonding. The number of valence electrons in bromine is 7, and in these molecules and ions, bromine is bonded with other elements through covalent bonds.

1. In BrF, there is one bromine atom and one fluorine atom. The bromine atom has 7 valence electrons, and it shares one electron with the fluorine atom. Thus, the bromine atom has 6 pairs of valence electrons.
2. In BrF+2, there are two fluorine atoms bonded with one bromine ion. Bromine has lost two electrons and has 5 valence electrons now. Each fluorine atom shares one electron with the bromine ion. Thus, the bromine ion has 5 pairs of valence electrons.
3. In BrF+6, there are six fluorine atoms bonded with one bromine ion. Bromine has lost six electrons and has only one valence electron now. Each fluorine atom shares one electron with the bromine ion. Thus, the bromine ion has only one pair of valence electrons.
4. In BrF−2, there are two fluorine atoms bonded with one bromine ion. Bromine has gained two electrons and has 9 valence electrons now. Each fluorine atom shares one electron with the bromine ion. Thus, the bromine ion has 7 pairs of valence electrons.
5. In BrF5, there are five fluorine atoms bonded with one bromine atom. The bromine atom has 7 valence electrons, and each fluorine atom shares one electron with it. Thus, the bromine atom has 5 pairs of valence electrons.
In summary, the number of pairs of valence electrons in the bromine atoms varies in different molecules and ions, depending on the number of atoms bonded with it and the number of electrons gained or lost by the bromine atom.

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In any chemical reaction, the mass of the products must equal the mass of the reactants. The mass of product B is the same as the combined mass of Reactant A and H₂O.

Answer:

sh5barch shougi

Explanation:

Answer:

An atom of Sulfur

Explanation:

i did a Quick search and im trying to get pass the "help a person first"

Answer:

• A collection of atoms of Sulfur

Explanation:

I'll assume the notation is written as \(S_{8}\).  A subscript after an element symbol represent the number of individual atoms of the symbol.  In this case \(S_{8}\) is telling us we have 8 sulfur atoms that are somehow connected to each other.  That is in contrast with 8S, which means we have 8 different sulfur atoms.  A chemical formaula, such as \(CH_{4}\) tells us we have a molecule containing 1 carbon atom and 4 hydrogen atoms.

Answer:

Rem is used to measure biological risk, and rad is used to measure absorbed radiation.

Explanation:

Answer:

Rem is used to measure biological risk, and rad is used to measure absorbed radiation.

Explanation:

Here is an image to prove that this is correct. Did on Edge

The molar solubility of PbBr2 at 25°C is 1.0102 mol/L.

We need to calculate Ksp and express the answer using two significant figures.

Ksp (solubility product) is the product of the concentrations of the ions in a saturated solution of an ionic compound raised to the power of their respective stoichiometric coefficients.

The solubility product expression for PbBr2 is:

PbBr2(s) ⇌ Pb2+(aq) + 2Br−(aq)

The KSP expression is then given by:

Ksp = [Pb2+][Br−]^2

Let x be the molar solubility of PbBr2.

Therefore,[Pb2+] = x M[Br−]

= 2x M

Now substituting the values in the Ksp expression,

Ksp = x(2x)^2= 4x^3

Since the molar solubility of PbBr2 is given as 1.0×10−2 mol/L,

By substituting the value of x in the expression for Ksp, we get:

Ksp = 4(1.0×10−2)^3Ksp

= 4 × 1.0 × 10^−6Ksp

= 4.0 × 10^−6

Therefore, the solubility product (Ksp) of PbBr2 is 4.0  106.

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Answer:

Yes, a chemical reaction has occurred

Explanation:

A chemical change is known to lead to the appearance of a new substance. Another name for chemical change is chemical reaction.

The new substance is formed when the bonds in the reactants are being rearranged to yield the products of the reaction.

In this case, two clear liquids were mixed and the contents of the system interacted briefly to yield a new product which appears as the white powder suspended in a clear,  colorless liquid.

Answer:

Zinc Carbonate

Zinc Nitrate

Explanation:

The correct answer is: Most of the free energy available from the oxidation of glucose is used in the production of ATP in glycolysis.

During glycolysis, which is the initial step of glucose metabolism, glucose is oxidized to pyruvate, producing a small amount of ATP and NADH in the process. The NADH is then used in the later stages of cellular respiration to generate more ATP through oxidative phosphorylation. The free energy released from the oxidation of glucose is primarily used to produce ATP in glycolysis because ATP is the primary energy currency of the cell and is required for various cellular processes. Only a small portion of the free energy is used to reduce NAD+ to NADH, resulting in the production of a limited amount of NADH during glycolysis.

This is why only two molecules of NADH are formed during this process. Most of the free energy available from the oxidation of glucose remains in pyruvate, one of the products of glycolysis, which can be further metabolized to extract more energy. Additionally, there is no \(CO_{2}\) or water produced as products of glycolysis because these products are formed in the later stages of cellular respiration.

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All of the following are characteristics of a Wittig  chemical reaction except it involves an SN² reaction between a carbanion and an aldehyde or ketone.

Chemical reactions are defined as changes which occur when a substance combines with another substance to form a new substance.Alternatively, when a substance breaks down or decomposes to give new substances it is also considered to be a chemical reaction.

There are several characteristics of chemical reactions like change in color, change in state , change in odor and change in composition . During chemical reaction there is also formation of precipitate an insoluble mass of substance or even evolution of gases.It involves SN¹ or SN²reactions.

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Answer:

sea urchins

Explanation:

Answer:

sea urchins

Explanation:

i took the test

Answer:

Yes, Copper (Cu) in its pure form is a reddish-brown metallic element with high ductility and malleability that is an excellent conductor of heat and electricity: atomic weight 63.54; atomic number 29; density 8.94 g/cm3; melting point 1083°C; and boiling point 2595°C.

Answer:

no ,its not malleable

Explanation:

copper II sulphate is a blue compound , which is brittle solid , crystalline .

copper metal is malleable and ductile

As there are 1,000,000 kg in 1 Mg, we must multiply by 1,000,000 to convert from Mg (megagrams) to kilogrammes. Therefore:

8.12 × 107 kg or 81.2 Mg is equal to 81.2 x 1,000,000 kg.

8.12 x 107 kilos, or in scientific notation, are contained in 81.2 Mg.

, I apologize for my mistake in the previous response. The conversion from Mg to kg is indeed done by multiplying by 1,000,000. Thank you for providing the correct calculation and explanation. The answer is:

81.2 Mg = 81.2 x 1,000,000 kg = 8.12 x 10^7 kg

Expressed in scientific notation, there are 8.12 x 10^7 kilograms in 81.2 Mg.

8.12 x 107 kilos, or in scientific notation, are contained in 81.2 Mg.

8.12 x 107 kilos, or in scientific notation, are contained in 81.2 Mg.

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