In a chromatography experiment, a student calculated an rf value for alanine of 0.70 and 0.91 for leucine. Which amino acid traveled higher on the chromatography paper? Explain your reasoning

The molar mass of citric acid (c6h8o7) is 192.124g/mol

The molar mass of baking soda (nahco3) is 84.007g/mol

The molar mass of a chemical compound is defined as the mass of a sample of that compound divided by the amount of substance in that sample and is measured in moles. Molar mass is a mass property, not a molecular property of a substance.

Molar mass is the mass of 1 mole of the sample. To find the molar mass, add up the atomic masses (atomic weights) of all the atoms in the molecule. Use the masses listed in the periodic table or atomic weight table to determine the atomic mass of each element.

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The molar mass of citric acid (C6H8O7) : 192.12 g/mol

The molar mass of citric acid (C6H8O7) : 84.007 g/mol

Baking soda is a monosodium salt of carbonic acid with alkalizing and electrolyte substitution properties. When dissociated, baking soda forms sodium and bicarbonate ions. Ion formation increases plasma bicarbonate and buffers excess hydrogen ion concentration, resulting in an increase in blood pH.

Citric acid is a naturally occurring weak acid in all citrus fruits. If you've ever sunk your teeth in a lemon, you've tasted citric acid. Manufacturers add artificial versions of it to processed foods. Drugs containing citric acid treat health problems such as kidney stones.

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Answer:

Explanation:

By definition 3 moles of water molecules. Or about 3 * 6.022140E23 water molecules = 1.806642E24 water molecules.

hope this is right..

Answer: Simply multiply Avogadro's number(6.02x10^23) by 3 and that's your answer. Use a scientific calculator

Explanation:

Answer:

Mass = 917.4 g

Explanation:

Given data:

Number of molecules = 3.00 ×10²⁴ molecules

Mass in gram = ?

Solution:

1 mole contain 6.022 × 10²³ molecules

3.00 ×10²⁴ molecules × 1 mol /  6.022 × 10²³ molecules

0.5×10¹ mol

5 mol

Mass in gram:

Mass = number of moles  × molar mass

Mass = 5 mol  × 183.48 g/mol

Mass = 917.4 g

The ratio of hydrocodone answer for cherry seasoning in the compound can be composed as:

1:2.

The proportion of hydrocodone answer for cherry enhancing in the compound is 1:2. This implies that how much hydrocodone arrangement is utilized is half of how much cherry enhancing is utilized. Proportions are an approach to looking at least two amounts, and they are commonly communicated as a small portion or with a colon. For this situation, the proportion is communicated utilizing a colon to isolate the two amounts. Proportions can be utilized in various settings, from cooking to science to back. In this particular case, the proportion is utilized to guarantee that the perfect proportion of every fixing is being utilized to make the ideal compound.

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Answer:

Explanation:

4

The balanced net ionic equation is:

Ag⁺(aq) + ClO₄⁻(aq) + Al³⁺(aq) + 3Cl⁻(aq) → AgCl(s) + AlCl₃(aq)

The balanced net ionic equation for the reaction between silver perchlorate and aluminum chloride in aqueous solution is shown above. In this reaction, the silver ion (Ag⁺) and perchlorate ion (ClO₄⁻) from silver perchlorate (AgClO₄) react with the aluminum ion (Al³⁺) and chloride ion (Cl⁻) from aluminum chloride (AlCl₃) to form solid silver chloride (AgCl) and aluminum chloride in aqueous solution (AlCl₃).

The net ionic equation shows only the species that participate in the reaction and are involved in the formation of the product (AgCl), while the spectator ions (Cl⁻ and Al³⁺) are omitted.

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The Waterfall process is a well-known model in software engineering for software development.

It is a linear sequential approach and follows a sequential order that progresses in phases, making it a systematic and highly organized approach to software development.One advantage of the Waterfall process is that it is a well-organized and structured approach to software development.

This systematic approach aids in the identification and resolution of problems that arise during the software development process. Also, it allows for easy monitoring and evaluation of progress at each stage of development.On the other hand, the Waterfall process's major disadvantage is that it is a rigid approach, and it is not suitable for complex software development projects. This inflexible nature makes it difficult to adjust to changes as the project progresses, especially when the client's requirements change midstream or new information becomes available that wasn't available when the project began.

The Waterfall approach has advantages and disadvantages. As a result, project managers must carefully assess their project requirements and decide whether to use the Waterfall process or a more suitable alternative approach that is appropriate for their project.

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The number of molecules of H₂O produced from 6.23g of C₂H₆ in the above reaction is 3.75 × 10²³ molecules.

Stochiometry is the study and calculation of quantitative (measurable) relationships of the reactants and products in chemical reactions (chemical equations).

According to this question, the following reaction occurs;

2 moles of ethane produces 6 moles of water

6.23 g, which is equivalent to 0.21 moles of ethane will produce 0.623 moles of water.

no of molecules of water produced = 0.623 mol × 6.02 × 10²³

no of molecules = 3.75 × 10²³ molecules

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According to stoichiometry as 162.955 g of phosphorous pentanitride has 92.919 g of phosphorous , thus 245 g of phosphorous pentanitride   will have 139.7 grams of phosphorous.

Stoichiometry 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.It is important as it helps the chemical reactions to obey law of conservation of mass.

As  162.955 g of phosphorous pentanitride=92.919 g of phosphorous

∴ 245 g of phosphorous pentanitride   =245×92.919/162.955=139.702 g.

Thus, 139.702 g  of phosphorus can be recovered from 245.0 g triphosphorus pentanitride.

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The correct answer is option (c) Ti4+.

The species which are attracted to a magnetic field are known as paramagnetic species. If we talk about the given options, then we can see that there are only 3 species that are given. Out of these three, only Ti4+ is paramagnetic. How can we determine whether a species is paramagnetic or not? The species which contain unpaired electrons are paramagnetic in nature. If there are all paired electrons, then the species are diamagnetic. If we talk about Ti4+, then it contains 2 unpaired electrons, which makes it paramagnetic. This is the reason why the correct answer is Ti4+.In Ar, all the electrons are paired, which makes it diamagnetic. In O, there are 2 unpaired electrons, which makes it paramagnetic. How can we determine whether a species is paramagnetic or not? The species which contain unpaired electrons are paramagnetic in nature. If there are all paired electrons, then the species are diamagnetic.

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Answer:

4 ClO-

Explanation:

Bond length ∝ 1/ Bond order

Bond order of ClO − =1,

Bond order of ClO 2− =1.5,

Bond order of ClO 3− =1.66 ,

Bond order of ClO 4− =1.75.

Thus the order of bond length is

ClO 4− <ClO3− <ClO2−

<ClO −

Answer:

resources that come from the ground or eath naturally which also means that those minerals like coal take hundreds of years to be created

The compound with the most exothermic lattice energy in each of the following pairs of ionic substances is Ca3N2.

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Answer:

kenetic

Explanation:

Answer:

Explanation:

activation energy

The minimum amount of energy needed for a reaction to take place is called the activation energy .

We can predict that magnesium would not react with KCl solution.

Here are some examples of balanced chemical equations for reactions that might have occurred:

a) Zinc + Hydrochloric acid → Zinc chloride + Hydrogen gas

Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g)

b) Magnesium + Nitric acid → Magnesium nitrate + Hydrogen gas

Mg(s) + 2HNO3(aq) → Mg(NO3)2(aq) + H2(g)

c) Copper + Silver nitrate → Copper nitrate + Silver

Cu(s) + 2AgNO3(aq) → Cu(NO3)2(aq) + 2Ag(s)

To list the metals in order of increasing activity based on experimental data, we need to observe and compare their reactivity towards a certain reaction or set of reactions. For example, we can immerse different metals in the same solution and observe which ones react and which ones don't, or we can compare the rate or extent of their reactions.

Assuming that we have data from an experiment involving different metals and a solution or compound, we can rank the metals in order of increasing activity as follows:

copper

Zinc

Magnesium

The order is based on the observation that copper did not react with the solution, while zinc and magnesium did. Zinc reacted faster and more vigorously than magnesium, indicating that it is more active.

Based on the ranking of metals in question 2, we can predict that zinc would react with KCl solution, while magnesium would not. Zinc is more active than magnesium, so it can displace magnesium from its compounds. KCl is a soluble salt, so we can write the balanced chemical equation for the reaction between zinc and KCl as:

Zn(s) + 2KCl(aq) → ZnCl2(aq) + 2K(s)

This reaction releases metallic zinc and forms zinc chloride, while the potassium ions in KCl remain in solution. Magnesium, on the other hand, is less active than zinc, so it cannot displace zinc from its compounds. Therefore, we can predict that magnesium would not react with KCl solution.

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Answer:

The average atomic mass of an element is the sum of the masses of its isotopes, each multiplied by its natural abundance (the decimal associated with percent of atoms of that element that are of a given isotopе). An element does not have an absolute atomic mass.

Hope this helps :)

Answer:

grinding up the salt

Explanation:

this is just what I think so take with a grain of salt (pun unintended) if its finer then it should dissolve faster because there is less volume per grain to undergo diffusion

Answer:

C. Power plant

Explanation:

Answer: fossil fuels like coal and oil 

Explanation:

a) bubble chamber.A bubble chamber is a device that allows scientists to observe the motion and interactions of charged particles as they travel through a superheated liquid, like liquid hydrogen. The bending of particle trails occurs due to the influence of a magnetic field, which helps researchers identify the properties of the particles.

A bubble chamber is a tool used in particle physics to watch how subatomic particles behave. A superheated liquid, usually liquid hydrogen or helium, is contained in a container. Bubbles are left behind by particles as they move through the liquid; these bubble trails can be captured on camera and investigated. The charge and mass of the particles can be determined from the bending of these particle trails in the presence of a magnetic field.

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The given reaction is already balanced, that is to say tha the number of atoms in the reactants matches the number of atoms in the products. In the reaction, we can see the relationship between CaC2 and H2O. For each mole of CaC2 two moles of H2O react.

So, if 4.8 moles of CaC2 are consumed the moles of H2O needed will be:

Mol of H2O = Mol of CaC2 x 2

Mol of H2O = 4.8 x 2 = 9.6 mol of H2O

Now, to calculate the grams of H2O we will use the following equation and the mass molar of H2O.

Mass molar of H2O =18.01 g/mol

So, if 4.8 moles of CaC2 are consumed in this reaction, 172.9 g of H2O are needed

Answer:

Nuclear Fission is a nuclear reaction or a Radioactive decay progress in which the necleus of an atom splits into two or more smaller, lighter neclei

The mass of 7,00 × 10²² NaOH molecules is 4,64 gram. 7,00 × 10²² NaOH molecules equal 0.116 moles NaOH.

To find out the mass of 7,00 × 10²² NaOH molecules you can use the following steps

Step 1: The first step is to calculate the number of moles of the compound.

mol = number of particles ÷ Avogadro's number

      = 7,00 × 10²² ÷ 6,022 × 10²³

      = 0,116 mol

Step 2: The next step is to calculate the mass of the molecules.

mass = mol × relative molecular mass

         = 0,116 mol × 40 gram/mol

          = 4,64 gram

So the mass of 7,00 × 10²² NaOH molecules is 4,64 gram.

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Answer: 40.3 L

Explanation:

To calculate the moles :

\(\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}\)

\(\text{Moles of} Sb_2O_3=\frac{175g}{291.5g/mol}=0.600moles\)

\(Sb_2O_3+3C\rightarrow 2Sb+3CO\)  

According to stoichiometry :

1 moles of \(Sb_2O_3\) produces = 3 moles of \(CO\)

Thus 0.600 moles of \(Sb_2O_3\) will produce=\(\frac{3}{1}\times 0.600=1.80moles\)  of \(CO\)

Volume of \(CO=moles\times {\text {Molar volume}}=1.80moles\times 22.4L/mol=40.3L\)

Thus 40.3 L of CO is produced.

Flash point alone cannot establish the identity of a petroleum product. CNG can be piped for transportation due to its gaseous state, while LNG requires cryogenic storage. Shale oil extraction has adverse environmental impacts. Low-temperature heat recovery systems face challenges. Controlled fission reactions generate electricity in nuclear reactors.

1. No, the flash point alone cannot establish the identity of a particular petroleum product. The flash point is the temperature at which a substance's vapor can ignite when exposed to an open flame.

While different petroleum products may have different flash points, there can be overlapping ranges, making it insufficient to determine the specific identity of a product. Other characteristics such as chemical composition, boiling point, and density are needed for accurate identification.

2. CNG (Compressed Natural Gas) can be piped for transportation because it remains in a gaseous state at normal temperature and pressure. It can be compressed and stored in high-pressure tanks, allowing for convenient pipeline transportation.

On the other hand, LNG (Liquefied Natural Gas) needs to be stored and transported at cryogenic temperatures below its boiling point (-162 °C or -260 °F). This requires specialized infrastructure and storage facilities, making pipeline transportation less practical.

3. Shale oil extraction, whether in-situ or ex-situ, is associated with adverse environmental impacts. In both methods, hydraulic fracturing (fracking) is typically used to extract oil from shale formations.

This process involves injecting large volumes of water, chemicals, and sand underground, which can contaminate groundwater and pose risks to ecosystems. Additionally, the extraction and processing of shale oil generate greenhouse gas emissions, contribute to habitat destruction, and can cause air and water pollution.

4. Low temperature heat recovery systems may not be widely adopted due to various reasons. First, the implementation and maintenance costs of such systems can be high, which may deter their widespread adoption. Second, the efficiency of low-temperature heat recovery is lower compared to higher temperature systems, resulting in lower energy recovery potential.

Lastly, there may be limited applications or industries where low-temperature heat recovery is feasible and economically viable, further limiting its acceptance.

5. Controlled fission reactions in nuclear reactors generate electricity through a process called nuclear fission. In a nuclear reactor, typically fueled by uranium or plutonium, the nucleus of a heavy atom is bombarded with neutrons, causing it to split into smaller fragments and releasing a large amount of energy.

This energy is converted into heat, which is used to generate steam. The steam then drives a turbine connected to a generator, producing electricity. The fission process is carefully controlled to prevent uncontrolled chain reactions and ensure a steady and safe production of heat and electricity.

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Answer:

fuse

Explanation:

fuses are made by metal alloys , have low melting point

Methane (CH4) is being considered as an alternative automotive fuel to replace gasoline. To determine the volume of 655 g of CH4 at 20°C (293 K) and 750 torr, use Ideal Gas Law: PV=nRT.

First we need to convert the mass of CH4 (655 g) to moles. The molar mass of CH4 is approximately 16 g/mol, so 655 g of CH4 is about 40.94 moles (655/16). Next, we need to convert the pressure from torr to atm. 1 atm = 760 torr, so 750 torr = 0.987 atm (750/760). Now, we can apply the Ideal Gas Law: (0.987 atm)(V) = (40.94 moles)(0.0821 L atm/mol K)(293 K). Solving for V, we get V ≈ 1046 L. Therefore, 655 g of methane at 20°C and 750 torr occupies a volume of approximately 1046 liters.

According to the Ideal Gas Law, when gases are at the same temperature, pressure, and volume (but not mass), they all have the same number of molecules. Keep in mind that the Ideal Gas rule does not apply when the temperature and pressure are just below the point at which a substance will become a liquid or solid. The combined gas law is made up of the three previously recognised laws:

Boyle's law PV = K,

Charles's law V/T = K,

Gay-law Lussac's P/T = K.

The combined ideal gas law's equation is therefore PV/T = K, where P is pressure, T is temperature, V is volume, and K is a constant.

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