which is the mass of kcl produced when 24.51 grams of kclo3 reacts compleately to produce 9.60 grams of o2

Valine is a non-polar amino acid that has a branched side chain. The side chain of Valine is of isobutyl group and has a non-polar aliphatic structure. Therefore, the correct option that describes the side chain of valine is non-polar.

Amino acids are organic compounds that are the building blocks of proteins. Each amino acid molecule comprises an amino group (-NH2), a carboxylic acid group (-COOH), and a side chain (-R). There are 20 naturally occurring amino acids, and their side chains vary in their chemical and physical properties.

There are four types of amino acid side chains: Non-polar side chains Polar side chains Acidic side chains Basic side chains Valine, abbreviated as Val or V, is a non-polar, aliphatic amino acid with a branched side chain. It's one of the twenty most frequent natural amino acids found in proteins.

Almost all natural amino acids have the R-configuration, which is optically active and denotes a configuration of a molecule.

Therefore, the statement "Nearly all naturally occuring amino acids have R configuration" is true.

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The reagents that can be used to accomplish each of the given ­transformations:

(a) To convert 2-methyl-2-butene into a monosubstituted alkene, we can use the reagent HBr (hydrogen bromide).

(b) To convert 2,3-dimethyl-1-hexene into a tetrasubstituted alkene, we can use the reagent diiodomethane (CH2I2) and a zinc-copper couple (Zn/Cu).

Explanation;

(a) To convert 2-methyl-2-butene into a monosubstituted alkene, one can use hydrohalogenation as the reaction. HBr in the presence of a peroxide, such as diethyl ether will result in the addition of a bromine atom to the less substituted carbon, producing 2-bromobutane. The bromine atom can then be removed using a strong base, such as sodium hydroxide (NaOH), resulting in the monosubstituted alkene 2-methyl-1-butene.

(b) To convert 2,3-dimethyl-1-hexene into a tetrasubstituted alkene, you can use the Simmons-Smith reaction. This reaction involves the use of diiodomethane (CH2I2) and a zinc-copper couple (Zn/Cu) as reagents. This will lead to the formation of a cyclopropane ring, which can then be dehydrohalogenated using a strong base, such as potassium tert-butoxide (t-BuOK), to yield the desired tetrasubstituted alkene.

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The molecules with a net dipole moment are (CH₃)₂O and CH₂Cl₂.  (CH₃)₂O and CH₂Cl₂ have a net dipole moment due to their asymmetrical molecular structure and uneven distribution of electron density.

A molecule has a net dipole moment when there is an uneven distribution of electron density, resulting in a molecule with a positive and negative end. In BF₃, the boron trifluoride molecule has a trigonal planar structure with symmetrical electron distribution, resulting in no net dipole moment. CCl₄, carbon tetrachloride, has a tetrahedral structure with evenly distributed electron density, also resulting in no net dipole moment.

CO₂, carbon dioxide, is a linear molecule with symmetrical electron distribution, having no net dipole moment. In contrast, (CH₃)₂O (dimethyl ether) and CH₂Cl₂ (dichloromethane) have asymmetrical molecular structures, leading to uneven electron distribution and a net dipole moment.

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Explanation:

Number 1

Q = 4280J

mass = x

∆∅ = 34.5 - 22

∆∅ = 12.5°C

Specific heat capacity of water = 4200J

Q = mc∆∅

4280 = x(4200)(12.5)

4280 = 52500x

x = 4280/52500

x = 0.0815kg

Number 2

c = x

Q = 3750

m = 315g

∆∅ = 78 - 28.4

∆∅ = 49.6°C

Q = mc∆∅

3750 = 315×x×49.6

3750 = 15624x

x = 3750/15624

x = 0.2400J(g°C)-¹

Number 3

c = 0.448

Q = 35000

m = 454g

∆∅ = x

Q = mc∆∅

35000 = 454(0.448)(x)

35000 = 203.392x

x = 35000/203.392

x = 172.0815

∅2 - ∅1 = ∆∅

∅2 = ∆∅ + ∅1

∅2 = 172.0815 + 24

∅2 = 196.0815

∅2 = 196°C

Number 4

Q = 8750J

m = 75g = 0.075

c = 4200J/kg/°C

∆∅ = x

Q = mc∆∅

8750 = 0.075(4200)∆∅

8750 = 315×x

x = 8750/315

x = 27.7778

∅2 - ∅1 = 27.7778

∅2 = 27.7778 + ∅1

∅2 = 27.7778 + 23

∅2 = 50.7778

∅2 = 50.8°C

Number 5

Q = 38800J

c = 0.448J/(g°C)

∆∅ = 178 - 24.5

∆∅ = 153.5°C

m = x

Q = mc∆∅

38800 = x × 0.448 × 153.5

38800 = 68.768x

x = 38800/68.768

x = 564.2159

x = 564g

Answer:

Because they don't need them , cell wall which are found in cell, maintain cell shape almost as if each cell has it's own exoskeleton ame this them to stand upright without the need for bones .

Explanation:

Answer:

wind and humidity

Explanation:

ocean and tides are not charectiristics of describing the weather

Answer: A. Winds

C. Humidity

Explanation: because wind blows air and humidity is heat like warm fog or warm.

Answer:

True

Explanation:

Limiting reagent is the reactant that determines the progress of the reaction. It determines how much of the product is formed.

The equation for this reaction is;

NaCl (aq) + NH4HCO3 (aq) → NaHCO3 (aq) + NH4Cl (aq)

From the reaction, 1 mol of NaCl reacts with 1 mol of NH4HCO3 to produce 1 mol of NaHCO3

Converting to masses using; Mass = Number of moles * Molar mass

58.44g of NaCl reacts with 79.056g of NH4HCO3

If we were to  sue the whole 1.2 g of NH4HCO3 we would require xg of NaCl

58.44 = 79.056

x = 1.2

x = 0.887g

The fact that 1.2g of NH4HCO3 requires 0.887g of NaCl (which is less than the available 0.75g) means that NaCl is the limiting reagent.

Answer:

Under the earth's surface, rocks melt, metamorphize, and crystalize.

Explanation:

Metamorphic and Igneous rocks are basically dependant on the heat/pressure of the environment under the surface :) Melting, metamorphosing and crystallization all occur under earth's surface.

The specific processes in the rock cycle that occur beneath the Earth surface are :

Under the Earth surface the specific rock cycle processes that leads to the formation of the different types of rocks includes;  Melting, metamorphization and rock crystallization.

Metamorphic rocks are formed from other rocks ( sedimentary and igneous rocks)  due to the change in temperature and this process is metamorphization. while igneous rocks are formed from molten rocks caused by the melting process. Sedimentary rocks are formed by the deposition of sediments from weathering of existing rocks this is the  crystallization process.

Hence the specific process in the rock cycle that occur beneath the Earth's surface are : Melting, metamorphosing and crystallization.

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Since an acidic salt solution is produced when a strong acid neutralizes a weak base, the pH of the salt solution formed when HCl is added to R2NH will be less than 7.

A neutralization reaction is the react ion between an acid and a base to form salt and water only.

Neutralization reactions can either produce a neutral solution, an acidic solution or an alkaline solution at equivalence point.

When a strong acid is added to a weak base, the pH of the salt solution formed will be less than 7.

Therefore, the pH of the salt solution formed when HCl is added to R2NH will be less than 7.

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Answer:

same atomic number

same proton number

same electron number

shows same chemical properties

Answer:

D. Gases have weak intermolecular forces between them

Being a weak acid (Ka = 5.6x104), the nitrous acid reacts with NaOH as follows: NaOH (l) + HNO2 = NaNO2 (aq) + H2O.

A 0.15 m naoh solution is used to titrate 100 ml of 0.15 m nitrous acid (HNO2). The pH of the initial solution is 2.04, 3.85 for the equivalence point, 8.06 for the point at which 80.0 ml of the base has been added, and 11.56 for the point at which 105 ml of the base have been added. There is initially simply a 0.12M HNO2 solution. Like Ka is: Ka is equal to [H+] [NO2]/[HNO2]. When the ions [H+] and [NO2] come from the same equilibrium, [H+] = [NO2] = x, 5.6x10⁻⁴ = X² / 0.15M. 8.4x10⁻⁵ = X². X = [H⁺] = 9.165x10⁻³M. Since pH = -log [H+], pH = 2.04.

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Answer:

The answer is B

Explanation:

Answer:

Which answer gives both a positive impact and a negative impact associated with the effects of nitrogen- and phosphorus-enhanced fertilizers?

1. increased algal blooms and damage to drinking water

Right Answer 2. increased plant growth and damage to drinking water

3. increase in denitrifying bacteria and increase in plant growth

4. increase in a limiting resource and increase in denitrifying bacteria

Explanation:

Tritiated hydrogen (3H) differs from hydrogen (1H) in that -3H has 2 more neutrons than 1H.

Tritiated hydrogen (3H) is a radioactive isotope of hydrogen that contains two additional neutrons compared to the stable isotope of hydrogen, which is hydrogen-1 (1H). The atomic nucleus of hydrogen-1 consists of a single proton and no neutrons, while tritiated hydrogen (3H) has one proton and two neutrons in its nucleus.

The addition of two neutrons in tritiated hydrogen (3H) increases its atomic mass, making it heavier than hydrogen-1 (1H). The presence of extra neutrons also affects the stability and radioactive properties of tritiated hydrogen. The unstable nature of 3H leads to its radioactive decay over time, emitting beta particles in the process.

Due to its radioactive nature, tritiated.

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Water has the chemical formula H2O, making it an inorganic substance. It is the primary chemical component of the Earth's hydrosphere and the fluids of all known living things and water.

Thus, It is transparent, flavorless, odorless, and almost colorless. In spite of not providing food, energy, or organic micronutrients, it is essential for all known forms of life and water.

Its molecules are made up of two hydrogen atoms joined by covalent bonds and have the chemical formula H2O. The angle at which the hydrogen atoms are joined to the oxygen atom is 104.45°. The liquid condition of H2O at standard pressure and temperature is known as "water" as well.

Water occurs because the environment on Earth is pretty close to the triple point of water.

Thus, Water has the chemical formula H2O, making it an inorganic substance. It is the primary chemical component of the Earth's hydrosphere and the fluids of all known living things and water.

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Answer:

Magnesium, strontium, and barium belong to group 2A of the periodic table.

Answer:

Instrumental Methods.

Explanation:

Compared to simple laboratory tests, instrumental methods of analysis may give improved: speed (they are quick) accuracy (they reliably identify elements and compounds) sensitivity (they can detect very small amounts of a substance in a small amount of sample)

Have a wonderful day! :-)

Answer:

284.395332

Explanation:

1 mole= 36.46094

so multiply 36.46094 times 7.8

and you get 284.395332

hope that helped ! Please mark brainliest I only need one more.

Answer:

chicken fox

Explanation:

Total volume of the solution formed will be 32.5 liters

Given:

Molarity of solution = 0.0200 m

mass of nacl = 38.0 grams

To Find:

total volume of the solution

Solution: Molarity is defined as the amount of solute present in 1 L of solution. The equation used to determine molarity of the solution follows:

M = given mass of nacl/molar mass of nacl*1/volume of solution

volume of solution = given mass/molar mass*1/molarity

volume = 38/58.5*1/0.02 = 32.5

Hence, volume of solution = 32.5 litres

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The statement "An acetylene cylinder is filled with a monolithic filler and acetone before acetylene gas is pumped into it." is True. When storing acetylene gas, it is commonly done in specialized cylinders to ensure safety.

These cylinders are designed to contain the acetylene gas at high pressure. Prior to filling the cylinder with acetylene gas, a monolithic filler material, often porous material like diatomaceous earth, is placed inside the cylinder. The purpose of the filler material is to provide a large surface area for the acetone to be absorbed.

Acetone is then added to the cylinder. Acetone has the ability to dissolve acetylene gas more effectively than plain gas alone. It acts as a solvent and helps to stabilize the acetylene gas inside the cylinder. The presence of acetone ensures that the acetylene gas is stored safely and prevents it from becoming unstable or explosive.

Once the monolithic filler and acetone are in place, the cylinder is ready to be filled with acetylene gas. The gas is pumped into the cylinder, and due to the properties of the filler and acetone, it is absorbed and stored within the cylinder. This process allows for the safe transportation and storage of acetylene gas, reducing the risk of accidents or explosions associated with this highly reactive gas.

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Spheres of power refer to the different areas in which corporations hold influence and power, including economic, political, cultural, and social spheres.

Corporations hold significant power in modern societies, often extending beyond traditional political boundaries. Corporate power is often characterized by the ability to influence public policy, shape public opinion, and control economic markets. Different corporations wield power in different spheres, depending on their size, sector, and geographic location.

Let us consider the example of Apple Inc. to describe the power it wields in different spheres.

Economic Sphere: Apple is one of the world's largest corporations, with a market capitalization of over $2 trillion. It holds significant economic power, controlling a sizable portion of the global smartphone and computer markets. It has been able to leverage its economic power to negotiate favorable trade deals, acquire smaller companies, and invest in research and development.

Political Sphere: Apple has been able to influence public policy through lobbying efforts. For example, it has lobbied for tax breaks and incentives to promote innovation and job creation. Apple has also been involved in high-profile legal battles over privacy concerns and intellectual property rights, with the outcome of these cases having implications for other technology companies.

Cultural Sphere: Apple has a strong brand identity and is often associated with innovation, creativity, and high quality. Its products have become a symbol of status and aspiration for many people, contributing to its cultural power. Apple has also invested in the entertainment industry through its Apple Music and Apple TV+ services, further extending its cultural influence.

Social Sphere: Apple has been able to shape social norms and behaviors through its products and marketing. For example, the iPhone has revolutionized the way people communicate and interact with technology, contributing to the rise of social media and the decline of traditional forms of communication. Apple's marketing campaigns have also had a significant impact on popular culture, influencing fashion trends and consumer behavior.

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Answer:because the chemical formula is vital to the equation it tells you what creates the chemical and whats in it you can change the exponents but not the formula itself

Explanation:

Answer:

A. Instructions for inherited traits

Explanation:

Your traits (what makes who you are) are from your DNA, and the DNA sends instructions on how your body preforms to use/inherit those traits.

I don’t know a lot about DNA, but this is the best information I can provide.

Hope this helps! :)

Ernest Rutherford’s model of the atom, first proposed in 1911, is one of the most important discoveries in the history of science. This model of the atom was revolutionary, as it improved upon J.J. Thomson’s “plum pudding” model and established a new understanding of the structure of the atom.

Rutherford’s model of the atom proposed that the atom was composed of a small, positively charged nucleus surrounded by negatively charged electrons. This structure was in contrast to Thomson’s model, which proposed that the atom was a homogeneous “plum pudding” composed of positive and negative charges. Rutherford’s model also proposed that the electrons orbited the nucleus in a manner similar to the way planets orbit the sun in the solar system, although the electrons did not have set orbits.

Rutherford also established that the alpha-particles (helium nuclei) are four times as heavy as a hydrogen atom. This discovery was made through the famous Gold Foil Experiment, in which Rutherford and his team of scientists sent alpha particles through a thin sheet of gold foil. The results of this experiment led Rutherford to conclude that the atom was not homogeneous.

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Claire is buying shoes at a store with a 35% discount. To find the discount amount, a proportion can be set up. With the additional 7.5% sales tax, the final cost of the shoes can be calculated. Claire's cousin, Sara, found the same shoes at a 40% discount with a 5% sales tax. The one who paid the lower total cost can be determined by comparing the final costs.

To find the dollar amount of the discount (d) for the shoes Claire is buying, a proportion can be set up using the discount rate of 35%. The proportion can be written as (d/$64.99) = (35/100). Solving this proportion will give the discount amount.

Next, to calculate the final cost of the shoes Claire buys, the sales tax of 7.5% needs to be considered. The final cost can be determined by adding the discounted price (original price - discount) and the sales tax amount (sales tax rate * discounted price).

Regarding Sara, she found the same pair of shoes at a 40% discount from a regular price of $67.00. To compare the total costs, the same process as above needs to be followed, considering Sara's 5% sales tax rate. The final costs for both Claire and Sara can be calculated, and by comparing the totals, it can be determined who paid the lower amount.

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Answer:

2-carbohydrate

Explanation:

Sucrose belongs to the carbohydrate family. It is a disaccharide which is derived from the condensation of glucose and fructose.

Sucrose is a specific type of organic compound classified as a carbohydrate and the correct option is option 2.

Carbohydrates are essential biomolecules made up of carbon, hydrogen, and oxygen atoms. Sucrose, also known as table sugar, is a disaccharide formed by the chemical bonding of one glucose molecule and one fructose molecule.

Plants produce sucrose through photosynthesis and use it as a readily available source of energy. When consumed by animals, including humans, sucrose is broken down into its constituent monosaccharides to provide fuel for various cellular processes.

Thus, the ideal selection is option 2.

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