propene. what does the name of this hydrocarbon tell you about its molecular structure? a. there are two carbon atoms and four hydrogen atoms in a single-bond linear chain. b. there are three carbon atoms and six hydrogen atoms in a single-bond linear chain. c. there are three carbon atoms and six hydrogen atoms in a double-bond linear chain. d. there are five carbon atoms and six hydrogen atoms in a triple-bond linear chain.

Answer:

they use echos to communicate

Explanation: dolphins make echos in order to signal there partners, and others in there pod. or they can use it to signal for prey, or signal that they are in trouble.

Answer: A good example for this one is bats.

Explanation: While a couple of bats are known to emanate the beats through their nose, most bats will in general express them. The recurrence is estimated to be around 200 heartbeats each second, nonetheless, the time frame can fluctuate with the types of a bat. Credits: Adi Ciurea/Shutterstock A bat's squeaks are more rewarding than Ben's on the grounds that with higher recurrence comes higher-goal or more distinctive detail – they are equipped for evading deterrents no more extensive than a human hair! They use it to find and explore towards prey, for example, a hurrying bug.   As the distinguished sound waves that structure the pictures are basically echoes, they should adjust to a standard — the recovered train of heartbeats should be sufficiently noisy to get back to the sender, yet short sufficient with the end goal that the reverberation of the sender returns before the following one withdraw.

Answer:

a proton turns into an atom that goes kabloey into fission products and other neutrons.

Explanation:

Gold will have the highest final temperature because it has the lowest specific heat.

The lower the specific heat, the less heat that is needed to change the temperature. So, the heat will have cause the greatest temperature change for gold, since it has the smallest specific heat. The temperature change for platinum will be close to that of gold since their specific heats are so similar.

The chemical element gold has the atomic number 79 and the symbol Au (derived from the Latin aurum). As a result, it is among the naturally occurring elements with a higher atomic number. In its purest form, it is a bright, somewhat orange-yellow, dense, soft, malleable, and ductile metal. Gold is a transition metal and a group 11 element in terms of chemistry. One of the least reactive chemical elements, it is solid under normal circumstances.

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Answer:

P = 9800 Pa

Explanation:

Given that,

The mass of a box, m = 30 kg

Length of the box, l = 0.2 m

The width of a box, b = 0.15 m

We need to find the pressure it exerted on the floor. Pressure is equal to force acting per unit area. So,

\(P=\dfrac{F}{A}\\\\=\dfrac{mg}{lb}\\\\=\dfrac{30\times 9.8}{0.2\times 0.15}\\\\P=9800\ Pa\)

So, 9800 Pa of pressure is exerted on the floor.

Answer:

+1

Explanation:

Electrochemistry. In oxidation–reduction (redox) reactions, electrons are transferred from one A redox reaction is balanced when the number of electrons lost by the reductant Hg(l)∣Hg2Cl2(s)∣Cl−(aq) ∥ Cd2+(aq)∣Cd(s).

As is evident from the Stock number, mercury has an oxidation state of +1. This makes sense, as chlorine usually has an oxidation state of -1.

The  oxidation state of Hg in Hg₂Cl₂ compound is +1 as both subscripts of elements are eliminated.

Compound is defined as a chemical substance made up of identical molecules containing atoms from more than one type of chemical element.

Molecule consisting atoms of only one element is not called compound.It is transformed into new substances during chemical reactions. There are four major types of compounds depending on chemical bonding present in them.They are:

1)Molecular compounds where in atoms are joined by covalent bonds.

2) ionic compounds where atoms are joined by ionic bond.

3)Inter-metallic compounds where atoms are held by metallic bonds

4) co-ordination complexes where atoms are held by co-ordinate bonds.

They have a unique chemical structure held together by chemical bonds Compounds have different properties as those of elements because when a compound is formed the properties of the substance are totally altered.

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Answer:

Certain breeds of fish will often clean bigger fish. The cleaner fish gets food, the bigger fish gets a cleaning.

I'm not too sure.

Good luck! <3

The  dichloromethane (DCM) a good organic solvent to solubilize benzoic acid and acetanilide because of the polarity of dichloromethane.

The DCM is a good organic solvent because it is volatile and have the ability to dissolve a wide range of the organic compound. the solubility of the benzoic acid and the acetanilide  in the dichloromethane is due the polarity. the like dissolves like. the DCM is less polar solvent.

The DCM dissolves the non ionic compounds and the slightly polar compounds. the water is the polar compound and it dissolves the ionic compound and the polar compounds. this is the reason dichloromethane (DCM) a good organic solvent to solubilize benzoic acid and acetanilide.

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We have to find formulas of the compunds

#a

Just observe the bonds and write

\(\\ \sf\longmapsto CH_3-CH_2-CH_3\)

#b

\(\\ \sf\longmapsto CH_2=CH-CH_2-CH_3\)

#c

\(\\ \sf\longmapsto CH\overline{=}C-CH_2-CH_3\)

Answer:

a.) CH₃ - CH₂ - CH₃

b.) CH₂ = CH - CH₂ - CH₃

c.) CH ≡ C - CH₂ - CH₃

Explanation:

In this compound there are 3 Carbon atoms and 8 Hydrogen atoms

Here, there is single bond between Carbon atom so it's known as Alkane

The Rational Formula:

CH₃ - CH₂ - CH₃

In this compound there are 4 Carbon atoms and 8 Hydrogen atoms

Here, there are double bond between Carbon atom so it's known as Alkene

The Rational Formula:

CH₂ = CH - CH₂ - CH₃

In this compound there are 4 Carbon atoms and 6 Hydrogen atoms

Here, there are triple bond between Carbon atom so it's known as Alkyne

The Rational Formula:

CH ≡ C - CH₂ - CH₃

-TheUnknownScientist

Answer:

5

Explanation:

Answer:

1) B- use the alkene general formula to decide which one is an alkene

2)A

3)D

Answer:

I'm pretty sure its D

Explanation:

they have uncontrolled growth

Answer: The four seasons happen because of the tilt of the Earth's axis. At different times of the year, the sun's rays hit different parts of the globe more directly. The angle of the Earth's axis tilts the Northern Hemisphere towards the sun during the summer.

Explanation: I am not gonna tell u what exactly to pick but this should give an idea okai? Hope I can help u :)

Answer:

so whats the answer?

Explanation:

a) The hydroxide ion concentration is 10 M

b) The number of moles of the hydrogen ions is 1 * 10^- 13 moles

c) The pH of the solution is 4.

We know that the pH of the solution has to do with the amount of the hydrogen ions that we have in a solution. Looking at the fact that the number of the hydrogen or the hydroxide ions that is in the solution is the basis that we can use to decide whether the solution can be said to be acidic or not.

a) If the pH has been given for the solution as 13 then

Hydrogen ion concentration = Antilog (-13) = 1 * 10^-13 M

It then follows that; \([OH^-] [H^+] = 1 * 10^-14\)

Then \(OH^-\) = 1 * 10^-14/1 * 10^-13 M

= 10 M

The number of moles per liter of the hydrogen ions would be;

Concentration * volume

= 1 * 10^-13 M * 1 L

= 1 * 10^-13 moles

If the hydrogen ion concentration is  1.0 × 10^–4 then the pH of the solution = - log( 1.0 × 10^–4)

= 4

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Answer:

Use Table B in your Student Guide to answer the questions about ion concentrations.

A solution with a pH = 13 has approximately how many moles of OH– ions per liter?  ⇒ 0.1

How many moles of H+ would this same solution have per liter?

⇒ 0.0000000000001

(Use the decimal form of your answer.)

A different solution with an H+ concentration of 1.0 × 10–4 would have a pH = 4.

Explanation:

he is right on the last question but not the rest

Answer: 84 g of N2 reacts completely to form 102 g of NH3.

Explanation: Change over the mass of N2 from grams to moles utilizing its molar mass:

84 g N2 × (1 mol N2 / 28 g N2) = 3 moles of N2

Utilize stoichiometry to calculate the number of moles of NH3 delivered, knowing that 3 moles of H2 are required to respond with 1 mole of N2:

3 moles of N2 × (2 moles of NH3 / 1 mole of N2) = 6 moles of NH3

Change over the number of moles of NH3 to grams utilizing its molar mass:

6 moles of NH3 × (17 g NH3 / 1 mol NH3) = 102 g NH3

The molarity of the KMnO4 solution is 0.532 M (rounded to three decimal places).

To calculate the molarity of the KMnO4 solution, we need to use the stoichiometry of the reaction and the volume of the KMnO4 solution used in the titration.

Given:

Mass of H2O2 solution = 1.0 g

Concentration of H2O2 solution = 30 wt% (weight percent)

Volume of KMnO4 solution used = 22.143 mL

Molar mass of H2O2 = 34.01 g/mol

Step 1: Calculate the moles of H2O2 in the solution.

Moles of H2O2 = (Mass of H2O2 solution) / (Molar mass of H2O2)

= 1.0 g / 34.01 g/mol

= 0.0294 mol

Step 2: Calculate the moles of KMnO4 based on the stoichiometry of the reaction.

According to the balanced equation, the ratio of KMnO4 to H2O2 is 2:5.

Therefore, moles of KMnO4 = (Moles of H2O2) * (2/5)

= 0.0294 mol * (2/5)

= 0.01176 mol

Step 3: Calculate the molarity of the KMnO4 solution.

Molarity (M) = (Moles of KMnO4) / (Volume of KMnO4 solution in liters)

= 0.01176 mol / 0.022143 L

= 0.5316 M

Therefore, the molarity of the KMnO4 solution is 0.532 M (rounded to three decimal places).

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Answer:

7,540,000 mg

Explanation:

1 kg = 1,000,000 mg

7.54 kg x 1,000,000= 7,540,000 mg

The concentration of the HBr solution is approximately 0.129 mol/L.

The concentration of a solution is the amount of solute dissolved in a given volume of solvent. In this case, the solution is HBr (hydrobromic acid) and it is being titrated by NaOH (sodium hydroxide). To find the concentration of HBr, we can use the formula:

Concentration (in moles/L) = moles of solute / volume of solution (in L)

First, let's find the moles of NaOH using the formula:

moles of NaOH = concentration (in moles/L) * volume of NaOH solution (in L)

moles of NaOH = 0.200 mol/L * 0.035 L

= 0.007 mol

Since HBr and NaOH react in a 1:1 ratio, the moles of HBr are also 0.007 mol.

Now, let's find the volume of the HBr solution in L:

volume of HBr solution (in L) = 54.10 mL * (1 L / 1000 mL) = 0.05410 L

Finally, let's calculate the concentration of HBr:

Concentration of HBr = 0.007 mol / 0.05410 L ≈ 0.129 mol/L

Therefore, the concentration of the HBr solution is approximately 0.129 mol/L.

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If the compounds are arranged from left to right as A to E then teh order is;

C > E > B > D> A

The order of reactivity toward electrophilic aromatic substitution (EAS) is as follows:

Activated aromatic rings: Aromatic rings that have electron-donating groups (such as -NH2, -OH, -OCH3, -NHCOCH3, etc.) attached to them are more reactive towards EAS reactions because these groups increase the electron density of the ring, making it more nucleophilic and better able to attack electrophilic reagents.

Unsubstituted aromatic rings: These rings have moderate reactivity towards EAS reactions because they are not electron-rich or electron-poor, but rather they have moderate electron density.

Deactivated aromatic rings: Aromatic rings that have electron-withdrawing groups (such as -NO2, -CN, -COOH, -SO3H, etc.) attached to them are less reactive towards EAS reactions because these groups decrease the electron density of the ring, making it less nucleophilic and less able to attack electrophilic reagents.

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Answer:

Nuclear energy powers our businesses, homes and military. America’s 95 operating nuclear reactors generate approximately 20% of our nation’s electricity and provide over half of our carbon-free energy. They also create good-paying jobs at power plants and uranium mines. Wyoming produced 87% of America’s domestic uranium supply in 2018.

Today, nuclear energy faces serious hurdles. Regulatory costs and subsidies for renewable energy technologies are forcing America’s nuclear power plants to close at an alarming rate.

Russia and China are subsidizing their government-owned nuclear companies to assert their energy influence around the world. China is searching the globe for uranium reserves and investing heavily in the countries where it’s found. They want to secure more nuclear fuel for themselves and increase their control of the global supply.

Meanwhile, American nuclear power plants have come to rely on cheap Russian imports of uranium to meet their nuclear fuel needs. Right now, roughly 40% of the uranium coming into the United States originates in Russia or its satellite states of Kazakhstan and Uzbekistan. Russian-backed companies are developing fuel that can be placed directly in American reactors.

Explanation:

Answer: c = 2.99792458 x 108m/s

Explanation: This equation is the speed of light in a medium having an index n, and c represents the speed of light in vacuum.

The change in internal energy of the gas is 1505.86 J.

Initial volume = V₁ = 3.20 x 10⁻² m³

Final volume = V₂ = 4.50 x 10⁻² m³

Pressure = P = 2.50 atm

Number of moles = n = 3 mol

Gas constant = R = 8.31 J/mol K

(a) Initial and Final Temperature

The temperature of the gas is given by the ideal gas law:PV = nRT

Initial Temperature :T₁ = PV₁/nR = (2.5 atm x 3.20 x 10⁻² m³) / (3 mol x 8.31 J/mol K) = 321.68 K

Final Temperature:T₂ = PV₂/nR = (2.5 atm x 4.50 x 10⁻² m³) / (3 mol x 8.31 J/mol K) = 458.83 K

(b) Work Done by the gasThe work done by the gas during the expansion can be calculated using the following equation:W = -P∆V

Where ∆V = V₂ - V₁W = -2.50 atm x (4.50 x 10⁻² m³ - 3.20 x 10⁻² m³) = -0.18125 J(c) Heat added to the gas

The first law of thermodynamics relates the change in internal energy (U) of a system to the heat added (Q) to the system and the work done (W) on the system.

∆U = Q - W

where ∆U = change in internal energy = 3/2 nR (∆T) = (3/2) x 3 mol x 8.31 J/mol K (458.83 K - 321.68 K)∆U = 1505.86 JQ = ∆U + WQ = 1505.86 J + (-0.18125 J) = 1505.67875 J(d) Change in Internal Energy

The change in internal energy of the gas can be calculated as:∆U = (3/2) nR (∆T)∆U = (3/2) x 3 mol x 8.31 J/mol K (458.83 K - 321.68 K)∆U = 1505.86 J

Therefore, the initial and final temperatures of the gas are 321.68 K and 458.83 K, respectively.

The work done by the gas during the expansion is -0.18125 J.The amount of heat added to the gas is 1505.67875 J.

The change in internal energy of the gas is 1505.86 J.

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Vapor density is defined as the amount of weight of a gas or vapor in comparison to air.

The relative weight of a gas or vapor in comparison to air, which has an arbitrary value of one, is defined as vapor density. If a gas's vapor density is less than one, it will rise in air. When the vapor density exceeds one, the gas will normally sink in air.

Vapor density is only a broad concept used to estimate where vapors might be discovered when released. This physical parameter, however, is not absolute and can be influenced by:

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The functional groups that are introduced as substituents on an aromatic ring by Friedel-Crafts alkylation and acylation reactions are an alkyl chain and an acyl group. Thus, the correct options are C and D.

Friedel-Crafts alkylation is a method of synthesizing an alkylbenzene from an arene and an alkyl halide using a Lewis acid catalyst, such as aluminum trichloride or ferric chloride. Similarly, Friedel-Crafts acylation is a chemical reaction that involves introducing an acyl group to an aromatic ring in the presence of a Lewis acid catalyst such as aluminum chloride, ferric chloride, or zinc chloride.

The following are the functional groups that are introduced as substituents on an aromatic ring by Friedel-Crafts alkylation and acylation reactions: An alkyl chain and an acyl group.

Therefore, the correct options are C and D i.e. an alkyl chain and a ketone.

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The number of moles in container 2 is 33.3moles when the container has 27.32L of gas inside it

The number of moles of gas in container 2 can be calculated using the Ideal Gas Law:  

n = PV/RT  

where n is the number of moles of the gas with known volume,

P is the pressure (assumed to be 1 atm for ideal gases),

V is the volume (27.32 liters),

R is the ideal gas constant (0.0821 L·atm/mol·K) and

T is the temperature (assumed to be 273.15 K).  

Plugging in the values, we get:  

n = (1 atm)(27.32 L)/(0.0821 L·atm/mol·K)(273.15 K)

n = 33.3 mol  

Therefore, there are 33.3 moles of gas in container 2.

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The rate at which atoms of radioactive sources, or radionuclides, disintegrate is measured in curies. A curie is a unit of measure for the amount of radioactive material present. It represents the amount of radioactive material in which 37 billion atoms disintegrate per second.

The disintegration of radionuclides produces ionizing radiation, which can be measured in rems or roentgens.

A rem is a unit of measurement for the amount of ionizing radiation absorbed by living tissue, while a roentgen is a unit of measurement for the amount of ionizing radiation in the air.
In summary, the rate at which atoms of radioactive sources disintegrate is measured in curies, while the amount of ionizing radiation produced by the disintegration can be measured in rems or roentgens. It is important to understand these units of measurement in order to properly monitor and regulate exposure to ionizing radiation, as it can have harmful effects on living organisms.

The rate at which atoms of radioactive sources (radionuclides) disintegrate is measured in curies (c).
To explain further, radioactive sources contain unstable atoms, called radionuclides. These radionuclides undergo disintegration or decay, during which they emit radiation. To quantify this process, we use various units.
Curies (Ci) is a unit of measurement specifically used to express the activity of a radioactive substance, or how quickly atoms in the radioactive source are disintegrating. One curie represents 37 billion disintegrations per second.

It's important to note the other units you mentioned:
- Rems (roentgen equivalent in man) is a unit used to measure the biological impact of ionizing radiation on human tissue.
- Roentgens (R) is a unit used to measure the exposure to ionizing radiation, specifically the amount of radiation that produces a certain amount of ionization in air.
- Rods is not a unit related to radioactivity, but might be confused with control rods, which are used in nuclear reactors to control the rate of nuclear reactions.

In summary, the appropriate unit for measuring the rate at which atoms of radioactive sources disintegrate is curies.

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Horner-Wadsworth-Emmons (HWE) reaction is an important synthetic reaction in organic chemistry. It is widely used for synthesizing various compounds. The reaction is between an aldehyde or ketone and a phosphonate or phosphonate ester in the presence of a strong base.

The Horner-Wadsworth-Emmons reaction is one of the most convenient and well-known methods of constructing carbon-carbon double bonds. The reaction proceeds via the formation of an ylide intermediate. The HWE reaction is particularly useful for the synthesis of compounds with a Z-configuration.

The mechanism for the reaction of diethyl benzylphosphonate and 3,4-methylenedioxybenzaldehyde in the presence of aqueous NaOH, forming 3,4-methylenedioxystilbene as the product, can be explained in the following steps:

Step 1: Formation of the ylide intermediate

The reaction starts with the formation of an ylide intermediate. This is achieved by the reaction of diethyl benzylphosphonate and 3,4-methylenedioxybenzaldehyde in the presence of a strong base like NaOH or KOH. In this reaction, a deprotonated species called an ylide intermediate is generated.

Step 2: Addition of the ylide intermediate to the aldehyde

The ylide intermediate then attacks the aldehyde, leading to the formation of a betaine intermediate.

Step 3: Formation of the phosphonate ester

The betaine intermediate undergoes elimination to form the final product, 3,4-methylenedioxystilbene, and the by-product phosphonate ester.

The mechanism of the Horner-Wadsworth-Emmons (HWE) reaction between diethyl benzylphosphonate and 3,4-methylenedioxybenzaldehyde in the presence of aqueous NaOH, forming 3,4-methylenedioxystilbene as the product, is complete. This reaction is significant in organic chemistry and finds applications in the pharmaceutical industry.

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To determine the new water level in the cylinder after adding the silver and gold objects, we need to consider the displacement of water by the objects. Therefore, the new water level in the graduated cylinder would be approximately 82.85 ml.

The principle of displacement states that the volume of water displaced by an object is equal to the volume of the object itself. Therefore, we can find the new water level by adding the volumes of the silver and gold objects to the initial water level. First, let's calculate the volume of the silver and gold objects. The density of silver is approximately 10.5 g/ml, and the density of gold is approximately 19.3 g/ml. Volume of silver object = Mass of silver object / Density of silver = 50.0 g / 10.5 g/ml = 4.76 ml. Volume of gold object = Mass of gold object / Density of gold = 50.0 g / 19.3 g/ml = 2.59 ml. Now, we can calculate the total volume of the silver and gold objects: Total volume = Volume of silver object + Volume of gold object = 4.76 ml + 2.59 ml = 7.35 ml. Finally, to find the new water level, we add the total volume of the objects to the initial water level: New water level = Initial water level + Total volume = 75.5 ml + 7.35 ml = 82.85 ml. Therefore, the new water level in the graduated cylinder would be approximately 82.85 ml.

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Answer:

(CH3COO)2 + redP + Cl2 → ClCH2COOH + HCl

Explanation:

This is an example of halogenation of carboxylic acids at alpha carbon atom. In this reaction, red phosphorus and chlorine are treated with carboxylic acids having alpha hydrogen atom followed by hydrolysis to form alpha chloro carboxylic acid.