How would you draw a structure containing only carbon and hydrogen that is a chiral alkyne with six carbon atoms?

Answer:

1. Gases may be compressed

2. Gases expand when less pressure is applied.

3. Gases can be mixed.

4. Gases exert a constant pressure on its container walls.

5. Gases have low densities.

i don't know if you mean C° to F° but in F° the change would be 123.8°

The ratio of the sum of the areas of the four smaller circles to the area of the larger circle is 4r² / R².

In simple wοrds, the ratiο is the number that can be used tο express οne quantity as a fractiοn οf the οther οnes. The twο numbers in a ratiο can οnly be cοmpared when they have the same unit. We make use οf ratiοs tο cοmpare twο things.

Tο find the ratiο οf the sum οf the areas οf the fοur smaller circles tο the area οf the larger circle, let's assume the radius οf the smaller circles is "r" and the radius οf the larger circle is "R."

The area οf a circle is given by the fοrmula A = πr², where "A" is the area and "r" is the radius.

The area οf οne smaller circle is πr², and since there are fοur smaller circles, the sum οf their areas is 4πr².

The area οf the larger circle is πR².

Therefοre, the ratiο οf the sum οf the areas οf the fοur smaller circles tο the area οf the larger circle is:

(4πr²) / (πR²)

Simplifying this expressiοn, we get:

4r² / R²

Sο, the ratiο is 4r² / R².

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Create vapor pressure is behind because the molecules that leave the liquid during evaporation.

What is evaporation ?

The water cycle's crucial step is evaporation. When a liquid transforms into a gas, evaporation takes place. As rain puddles "disappear" on a hot day or when wet clothing dries in the sun, it is simple to envision. The liquid water in these instances is evaporating into a gas known as water vapor rather than actually dissipating.

What is kinetic energy ?

When an item undergoes work—the transfer of energy—by being subjected to a net force, it accelerates and acquires kinetic energy.

Therefore, Create vapor pressure is behind because the molecules that leave the liquid during evaporation.

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Answer:

CH3CH2CH2CH3

Explanation:

The boiling point of a compound depends on the nature of intermolecular interaction between the molecules of the compound.

If a molecule is nonpolar and has a low molecular mass, then its molecules are most likely held together only by weak intermolecular bonds such as dispersion forces. These forces are easily broken and the molecules move apart hence the molecule possess a low boiling point.

Polar molecules and molecules having higher molecular mass tend to have higher boiling points.

Among all the compounds listed, CH3CH2CH2CH3 is non polar and has the lowest molecular mass hence it exhibits the least boiling point.

Answer:

0.08937835168818843

Explanation:

1 grams Oxygen is equal to 0.062502343837894 mole.

Two substances that have the same pH value are ammonia and sodium bicarbonate. The reason for this is because both of these substances act as weak bases.

The pH value is a measure of acidity or alkalinity in a solution. The pH scale ranges from 0 to 14. A pH value of 7 is neutral, a pH value less than 7 is acidic, and a pH value greater than 7 is basic or alkaline. The pH value of ammonia is 11.0, and the pH value of sodium bicarbonate is 8.3.The pH value of ammonia is high because it is a basic substance. It reacts with water to form ammonium ions and hydroxide ions.

The concentration of hydroxide ions in a solution is what determines the pH value. In other words, a solution with more hydroxide ions has a higher pH value. Since ammonia has a high concentration of hydroxide ions, its pH value is high.Sodium bicarbonate is also a weak base. It reacts with water to form bicarbonate ions and hydroxide ions. The concentration of hydroxide ions in a solution is what determines the pH value. Since sodium bicarbonate has a low concentration of hydroxide ions, its pH value is low compared to ammonia.

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Answer:N

2

+ 3

H

2

-----> 2N

H

3

Explanation:

N

2

+

H

2

-----> N

H

3

Let us balance this equation by counting the number of atoms on both sides of the arrow.

N

2

+

H

2

-----> N

H

3

N=2 , H=2 N=1, H=3

To balance the number of N atom on Right Hand Side (RHS) , I will add one molecule of N

H

3

on RHS

N

2

+

H

2

-----> 2N

H

3

N=2 , H=2 N=2 , H= 6

To balance the number of H atoms on Left Hand Side (LHS) , I will add two molecules of

H

2

on LHS

N

2

+ 3

H

2

-----> 2N

H

3

N=2 , H=6 N=2 , H= 6

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Answer:

you said brainliest

Explanation:

The hybridization of the carbon atom that is double bonded to an oxygen atom is: A. sp.

To determine the hybridization of an atom in a molecule, we can follow these steps:

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Molarity

Chemists primarily need the concentration of solutions to be expressed in a way that accounts for the number of particles that react according to a particular chemical equation. Since percentage measurements are based on either mass or volume, they are generally not useful for chemical reactions. A concentration unit based on moles is preferable. The molarity (M) of a solution is the number of moles of solute dissolved in one liter of solution. To calculate the molarity of a solution, you divide the moles of solute by the volume of the solution expressed in liters.

Note that the volume is in liters of solution and not liters of solvent. When a molarity is reported, the unit is the symbol M and is read as “molar”. For example a solution labeled as 1.5 M NH 3 is read as “1.5 molar ammonia solution”.

Sample Problem: Calculating Molarity

A solution is prepared by dissolving 42.23 g of NH 4 Cl into enough water to make 500.0 mL of solution. Calculate its molarity.

Step 1: List the known quantities and plan the problem.

& underline{text{Known}} &&underline{text{Unknown}} \& text{mass}=42.23 text{g} NH_4Cl && text{molarity}= ? text{ M}\& text{molar mass} NH_4Cl=53.50 text{g} / text{mol} \& text{volume solution}=500.0 text{mL}=0.5000 text{L}

The mass of the ammonium chloride is first converted to moles. Then the molarity is calculated by dividing by liters. Note the given volume has been converted to liters.

Step 2: Solve.

42.23 text{ g } NH_4Cl times frac{1 text{ mol } NH_4Cl}{53.50 text{ g } NH_4Cl} &= 0.7893 text{ mol } NH_4Cl\frac{0.7893 text{ mol } NH_4Cl}{0.5000 text{ L}} &= 1.579 text{ M}

Step 3: Think about your result.

The molarity is 1.579 M, meaning that a liter of the solution would contain 1.579 mol NH 4 Cl. Four significant figures are appropriate.

In a laboratory situation, a chemist must frequently prepare a given volume of solutions of a known molarity. The task is to calculate the mass of the solute that is necessary. The molarity equation can be rearranged to solve for moles, which can then be converted to grams. See sample problem 16.3.

Sample Problem:

A chemist needs to prepare 3.00 L of a 0.250 M solution of potassium permanganate (KMnO 4 ). What mass of KMnO 4 does she need to make the solution?

Step 1: List the known quantities and plan the problem.

Known

molarity = 0.250 M

volume = 3.00 L

molar mass KMnO 4 = 158.04 g/mol

Unknown

mass KMnO 4 = ? g

Moles of solute is calculated by multiplying molarity by liters. Then, moles is converted to grams.

Step 2: Solve.

text{mol KMnO}_4 = 0.250 text{ M KMnO}_4 times 3.00 text{ L} &= 0.750 text{ mol KMnO}_4\0.750 text{ mol KMnO}_4 times frac{158.04 text{ g KMnO}_4}{1 text{ mol KMnO}_4} &=119 text{ g KMnO}_4

Step 3: Think about your result.

When 119 g of potassium permanganate is dissolved into water to make 3.00 L of solution, the molarity is 0.250 M.

The carbonyl stretching frequency in the infrared spectrum depends on the nature of the carbonyl group and the adjacent functional groups or substituents. Based on this, we can rank the given molecules in terms of their carbonyl stretching frequency, from highest to lowest:

2,4-cyclohexadienone > 2-cyclohexenone > cyclohexenone > cyclohexanone

In general, a carbonyl group adjacent to an electron-withdrawing group will have a higher stretching frequency compared to a carbonyl group adjacent to an electron-donating group.

In 2,4-cyclohexadienone, the two carbonyl groups are conjugated with each other and with the double bonds in the ring, resulting in a very high carbonyl stretching frequency. In 2-cyclohexenone, the carbonyl group is conjugated with the double bond in the ring, resulting in a slightly lower stretching frequency.

In cyclohexenone, the carbonyl group is adjacent to a single double bond in the ring, resulting in a lower stretching frequency compared to 2-cyclohexenone. In cyclohexanone, the carbonyl group is not conjugated with any other functional group, resulting in the lowest carbonyl stretching frequency among the given molecules.

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To determine the molar concentration of the hydrochloric acid (HCl) solution, we need to use the information provided about the mass of anhydrous sodium carbonate and the volume of HCl solution used in the titration.

Given:

Mass of anhydrous sodium carbonate: 0.338 g

Volume of HCl solution used: 15.3 mL

First, we need to convert the volume of the HCl solution to liters:

Volume of HCl solution = 15.3 mL = 0.0153 L

Next, we need to determine the number of moles of anhydrous sodium carbonate (Na2CO3) using its molar mass. The molar mass of Na2CO3 is 105.99 g/mol.

Number of moles of Na2CO3 = Mass / Molar mass

Number of moles of Na2CO3 = 0.338 g / 105.99 g/mol

Now, since the balanced chemical equation between Na2CO3 and HCl is 1:2, we can determine the number of moles of HCl required for the reaction.

Number of moles of HCl = (Number of moles of Na2CO3) * 2

Next, we calculate the molar concentration of the HCl solution using the moles of HCl and the volume of the HCl solution.

Molar concentration of HCl = (Number of moles of HCl) / Volume of HCl solution

Substituting the values:

Molar concentration of HCl = (0.338 g / 105.99 g/mol) * 2 / 0.0153 L

Calculating the value:

Molar concentration of HCl ≈ 0.442 mol/L

Therefore, the molar concentration of the hydrochloric acid (HCl) solution is approximately 0.442 mol/L.

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Answer:

2 miles per hour.

Explanation:

10/5=2

To solve this we must be knowing each and every concept related to speed  and its calculations. Therefore, the correct option is option C.

Speed may be defined as the distance traveled by an item in the amount of time it requires to travel that distance. In other words, it measures how rapidly an item travels but does not provide direction.

The Scientific unit system is most typically used to express speed. Speed is determined in metres per second, or m/s, since distance is recorded in metres while time is recorded in seconds.

Mathematically,  

speed= distance/ time

distance= 10 miles

time= 5 hours

substituting all the given values in the above equation, we get

speed=10/5

on calculations, we get

speed = 2 mph

Therefore, the correct option is option C.

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Answer:

No

Explanation:

The same amount of matter is present before and after chemical and physical changes. Matter cannot be created or destroyed

Answer:

none is created or destroyed. This concept is called the Law of Conservation of Mass.

To calculate the energy required to heat a substance, we can use the formula:

Q = mcΔT

where Q is the heat energy, m is the mass of the substance, c is the specific heat capacity, and ΔT is the change in temperature.

Given that we have 712.0 g of graphite, a specific heat capacity of 0.710 J/g-K, and a temperature change of 18.7 °C (20.7 °C - 2.0 °C)

Q = (712.0 g) x (0.710 J/g-K) x (18.7 °C)

Q = 10,965.64 J.

The energy required to heat 712.0 g of graphite from 2.0 °C to 20.7 °C is 10.965 kJ.

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Answer:

no

Explanation:

changing the number of protons will change the atomic number, and if the atomic number is changed, it will become a different element. if you give oxygen 9 protons, it would no longer be oxygen, it would be fluoride.

The balanced chemical equation for the combustion of methane is:

CH4 + 2O2 → CO2 + 2H2O

From the equation, we can see that 1 mole of methane reacts with 2 moles of oxygen to produce 1 mole of carbon dioxide and 2 moles of water.

The molar mass of methane (CH4) is:

(1 x 12.01 g/mol) + (4 x 1.01 g/mol) = 16.05 g/mol

To calculate the amount of oxygen required for the combustion of 128g of methane, we need to first convert the mass of methane to moles:

128 g CH4 ÷ 16.05 g/mol = 7.98 mol CH4

According to the stoichiometry of the balanced equation, 2 moles of oxygen are required for every 1 mole of methane that reacts. Therefore, we need:

7.98 mol CH4 x (2 mol O2 / 1 mol CH4) = 15.96 mol O2

Finally, we can convert the moles of oxygen to grams:

15.96 mol O2 x 32.00 g/mol = 511.2 g O2

Therefore, 511.2 g of oxygen are required for the complete combustion of 128g of methane.

Based on the relationship between the number of turns of the coils and the strength of an electromagnet, the true options are:

The hypothesis was supported by the results of the experiment:

The correct option is II only.

The strength of the electromagnet rises with the number of turns in the coil.

This is due to the fact that as the coil "cuts" through the magnetic field, the sum of the individual emf s created by each turn increases with the number of coils turns.

The relative speed between the coil and magnet, as well as the magnet's strength, are additional elements that influence the strength of the induced current in a dynamo in addition to the number of coils. The intensity of the generated current increases with magnet strength and relative speed.

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Conversion of 7g/dm³ of H₂O to 0.21 mol/dm³ is

Conversion is the act or process of changing something into a different state or form

Here given data is

7g/dm³ of H₂O we have to convert it into mol/dm³ = ?

Then divide by the relative formula mass

We get  H₂O then H = 1 here 2 hydrogen = 1×2 = 2 and 1 oxygen i.e 1×16 = 16 =

2×16 = 32

So,  7g/dm³/32

= 0.21 mol/dm³

7g/dm³ of H₂O to 0.21 mol/dm³

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The answer is :-

Despite concerns to their increasing contribution to ecological and human exposure, the atmospheric levels of poly- and perfluoroalkyl substances (PFASs) have been determined mainly in Europe and North America.

Explain perfluoroalkyl substances.

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The chemical formula of mentioned substances is as follows 1) SO₃ 2) K\(^+\) and NO₃\(^-\) 3) ΔH 4) Cu 5) Hg (l) 6)ZnCl₂.

Chemical  formula is a way of representing the number of atoms present in a compound or molecule.It is written with the help of symbols  of elements. It also makes use of brackets and subscripts.

Subscripts are used to denote number of atoms of each element and brackets indicate presence of group of atoms. Chemical formula does not contain words. Chemical formula in the simplest form  is called empirical formula.

It is not the same as structural formula and does not have any information regarding structure.It does not provide any information regarding structure of molecule as obtained in structural formula.

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The answer to the question is c) 80%. This is the closest percentage to the water content found in most beers.

The percentage of water in beer is an important factor to consider when brewing and analyzing the final product. In this question, we will explore the approximate percentage of water found in most beers. Water is a critical component in the brewing process, comprising the majority of the final product. Most beers have a water content ranging from 80-90% by weight. This is because water is needed to dissolve the fermentable sugars and extract flavors and aromas from the malted grains. Additionally, water plays a vital role in regulating the temperature during mashing and boiling.

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They involve a full or partial transfer of electrons from one reactant to another and Oxidation and reduction must both occur in the same reaction, are true. The correct answer is e.

Oxidation-reduction reactions, also known as redox reactions, involve the transfer of electrons between reactants.

In these reactions, one reactant is oxidized, which involves the loss of electrons, while another reactant is reduced, involving the gain of electrons. This electron transfer can be either partial or complete.

It is important to note that oxidation and reduction must occur simultaneously in the same reaction. This means that if one reactant is being oxidized, another reactant must be simultaneously reduced.

This conservation of electrons ensures that the overall charge remains balanced. Oxygen does not necessarily have to be involved in redox reactions.

While many redox reactions do involve oxygen, it is not a requirement. Redox reactions can occur with other elements or compounds, not necessarily involving oxygen.

Oxidation-reduction reactions involve the transfer of electrons and require oxidation and reduction to occur in the same reaction, but the involvement of oxygen is not a mandatory condition. The correct answer is e.

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The pH level of the sea water will goes up if we made sea water with some washing powder.

Alkali in detergents can upset the harmony of aquatic habitats by raising the pH of the water and resulting in chorological changes. Sometimes the chelating is really toxic: Because it forms exceptionally stable compounds with metals like iron or hemoglobin, EDTA (ethylene diamine tetra acetic acid) is poisonous. Bleaching agents, such as bleach and peroxides, are potent antioxidants that may also damage organic matter and produce highly harmful free radicals.

Detergents reduce the oxygenation of the water by creating foams. Their surfactant qualities enable them to disperse hazardous chemicals in aquatic environments by dissolving the molecules. Some detergents are strongly suspected of interfering with the metabolism of animals, particularly frogs (Anura, Urodela), fish, and humans. These pesticides are known as hormone-mimics (endocrine disruptors). They may result in fish and mollusk sex changes, a sharp reduction in frog populations, and a decline in human spermatogenesis.

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Answer:

Answer:

Reaction is already balanced

Explanation:

The equation in reaction 1 is given as;

CH3COOH + NaHCO3 --> CO2 + H2O +  Na+   +  CH3COO-

The reaction is already balanced. This is because the umber of atoms of elements in the reactant is equal to that of the products

Carbon

Reactant = 2 + 1 = 3

Product = 2 + 2 = 3

Hydrogen

Reactant = 3 + 1 + 1 = 5

Product = 2 + 3 = 5

Oxygen

Reactant = 2 + 3 = 5

Product = 2 +1 + 2 = 5

Sodium

Reactant = 1

Product = 1

Answer:

The reaction is already balanced because the number of atoms in the reactant is equal to the products

Explanation: