Classify each property as associated with a liquid that has strong or weak intermolecular forces.

a. high viscosity
b. low boiling point
c. low viscosity
d. high boiling point
e. high surface tension
f. low surface tension
g. low vapor pressure high vapor pressure

Answer:

A

Explanation:

But I'm not sure just my instinct

The statement that described the movement of the medium via the transverse wave should be that it should be parallel to the wave.

It is the waves in which the motion considered all the points that should be on the wave oscillate along the paths at the right angles with respect to the wave of the direction. An example of this kind of wave should be electromagnetic, etc. Here, the movement should be parallel to the wave.

Hence, the correct option is b.

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The concentration of chloride ions when 2.5 g of FeCl is dissolved in 150 mL of water is approximately 0.54 M.

To determine the concentration of chloride ions when 2.5 g of FeCl is dissolved in 150 mL of water, we need to consider the molar mass of FeCl and perform some calculations.

The molar mass of FeCl is 55.85 g/mol (for iron) + 35.45 g/mol (for chlorine), which gives a total molar mass of 91.3 g/mol for FeCl.

First, we need to calculate the number of moles of FeCl present in 2.5 g of the compound. This can be done using the formula:

moles = mass / molar mass

moles of FeCl = 2.5 g / 91.3 g/mol = 0.027 moles

Next, we convert the volume of water from milliliters (mL) to liters (L):

volume of water = 150 mL = 150/1000 L = 0.15 L

Now, we can calculate the concentration of chloride ions (Cl-) using the formula:

concentration (Cl-) = moles of Cl- / volume of water

Since FeCl dissociates into one Fe3+ ion and three Cl- ions, the number of moles of Cl- is three times the moles of FeCl:

moles of Cl- = 3 * moles of FeCl = 3 * 0.027 moles = 0.081 moles

concentration (Cl-) = 0.081 moles / 0.15 L = 0.54 M.

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Answer:

Division by zero is undefined because there is no other number to divide it by.

Explanation:

Unlike 2/2, 2/0 doesn't have anything to divide the 2 by which makes it undefined and impossible to solve.

The division by zero is undefined​, because whatever response we may give, we will then have to concur that the answer times 0 = 1, which is illogical because anything multiplied by zero is zero.

Since any attempt at definition results in a contradiction, the outcome of a division by zero cannot be defined. a=r*b. r*0=a. (1) (1) But because r*0=0 for all r, there is no solution to the equation unless a=0 (1).

Again, mathematicians have left zero divided by zero as an open problem because they are both equally valid and, to be honest, neither of them is consistent with the rest of mathematics.

Mathematically, it is impossible to divide a number by zero, just as in this illustration. Or, at the very least, there isn't currently a means to do that. Numerous attempts have been made to figure out how to divide by zero, as mathematicians are constantly looking for solutions to intriguing mathematical issues.

Thus, The division by zero is undefined​, because whatever response we may give, we will then have to concur that the answer times 0 = 1.

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Answer:

Am coming to answer you ok

5.93 moles of lithium oxide i.e. the product will be produced in the reaction.

The balanced chemical equation for the synthesis of lithium oxide from lithium and oxygen gas is:

4 Li + O₂ → 2 Li₂O

We must first compute the required volume of oxygen gas in order to determine the moles of lithium oxide that are created. Going by the stoichiometry of the reaction, 2.7 moles of lithium will produce 2 moles of lithium oxide when reacted with 0.675 moles of oxygen gas.

Therefore, the amount of lithium oxide generated can be calculated as follows, The formula is 2 moles Li₂O/0.675 moles O₂*1 = 5.93 moles Li₂O.

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Ammonia (\(NH_3\)) and ammonium chloride (\(NH_4Cl\)) mixture could be a useful buffer in a solution. Option C

A buffer is a solution that can resist changes in pH when small amounts of acid or base are added. It consists of a weak acid and its conjugate base or a weak base and its conjugate acid. The buffer system works by the principle of Le Chatelier's principle, where the equilibrium is shifted to counteract the changes caused by the addition of an acid or a base.

In option A, acetic acid (\(CH_3CO_2H\)) is a weak acid, but hydrochloric acid (HCl) is a strong acid. This combination does not form a buffer because HCl is completely dissociated in water and cannot provide a significant concentration of its conjugate base.

Option B consists of sodium hydroxide (NaOH), which is a strong base, and elemental sodium (Na), which is a metal. This combination does not form a buffer as there is no weak acid-base pair involved.

Option D contains acetic acid (\(CH_3CO_2H\)), a weak acid, and ammonia (\(NH_3\)), a weak base. Although they are weak acid and base, they do not form a buffer system together as they are both weak acids or bases and lack the required conjugate acid-base pair.

Option C, ammonia (\(NH_3\)), is a weak base, and ammonium chloride (\(NH_4Cl\)) is its conjugate acid. This combination can form a buffer system. When ammonia reacts with water, it forms ammonium ions (NH4+) and hydroxide ions (OH-).

The ammonium ions act as the weak acid, while the ammonia acts as the weak base. The addition of a small amount of acid will be counteracted by the ammonium ions, and the addition of a small amount of base will be counteracted by the ammonia, thus maintaining the pH of the solution relatively stable.

Therefore, option C, consisting of ammonia (\(NH_3\)) and ammonium chloride (\(NH_4Cl\)), is the suitable mixture that could be a useful buffer in a solution.

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Answer:

26.87g

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

2Fe + O2 —> 2FeO

Next, we shall determine the masses of Fe and O2 that reacted and the mass of FeO produced from the balanced equation.

This is illustrated below:

Molar mass of Fe =56 g/mol

Mass of Fe from the balanced equation = 2 x 56 = 112 g

Molar mass of O2 = 16x2 = 32 g/mol

Mass of O2 from the balanced equation = 1 x 32 = 32 g

Molar mass of FeO = 56 + 16 =72 g/mol

Mass of FeO from the balanced equation = 2 x 72 = 144 g

From the balanced equation above,

112 g of Fe reacted with 32 g of O2 to produce 144 g of FeO.

Next, we shall determine the limiting reactant.

This is illustrated below:

From the balanced equation above,

112 g of Fe reacted with 32 g of O2.

Therefore, 20.9 g of Fe will react with = (20.9 x 32)/112 = 5.97 g of O2.

From the calculations made above, we can see that only 5.97 g out of 9.19 g of O2 given were required to react completely with 20.9 g of Fe.

Therefore, Fe is the limiting reactant and O2 is the excess reactant.

Finally, we shall determine the mass of FeO produced from the reaction.

In this case, the limiting reactant will be used, as it will give the maximum yield of the reaction since all of it is used up in the reaction.

The limiting reactant is Fe and the maximum mass of FeO produced can be obtained as follow:

From the balanced equation above,

112 g of Fe reacted to produce 144 g of FeO.

Therefore, 20.9 g of Fe will react to produce = (20.9 x 144)/112 = 26.87g of FeO.

Therefore, the maximum mass of iron(II) oxide, FeO produced is 26.87g.

The structure of fatty acids involves long carbon-based chains with a carboxyl group (―COOH) located in the end, triglycerides phospholipids contain a phosphate group and glycerol, while steroids are cyclic and they contain C atoms linked via 4 fused rings.

Lipids are a broad category of biomolecules that include fatty acids, triglycerides phospholipids, and steroids. For example, fatty acids are long carbonated chains that contain exactly identical CH2 groups in the interior of the molecule and a carboxyl group (―COOH) located at one extreme side.

Triglycerides phospholipids are composed of three fatty acids chains linked to a glycerol backbone and also a phosphate group that may confer polar properties to the molecule.

Finally, steroids are another important class of lipids composed of several carbon-based fused rings.

Therefore, we can conclude that fatty acids, triglycerides phospholipids, and steroids are structurally different lipids that are mainly composed of carbon-based structures.

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The magnetic quantum number (ml) represents the orientation of the orbital in three-dimensional space the only possible value of the magnetic quantum number ml for a 1s electron is 0.

Quantum is the smallest possible unit of a physical quantity, such as energy or momentum. It is a fundamental concept in quantum mechanics, which is the branch of physics that deals with the behavior of matter and energy at the atomic and subatomic level.

The idea of quantization was first proposed by Max Planck in 1900, when he discovered that energy is emitted and absorbed in discrete units called "quanta" when studying the behavior of light and blackbody radiation. Later, this idea was extended to other physical quantities, such as the momentum and position of particles.

According to quantum mechanics, the behavior of particles and systems cannot be fully described using classical mechanics, which assumes that particles have definite positions and velocities at all times. Instead, the behavior of particles and systems is described using wave functions, which represent the probability of finding a particle at a given position and time.

The principles of quantum mechanics have important applications in many areas of physics, including atomic and molecular physics, condensed matter physics, and particle physics. They are also the basis.

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Answer:

1.90 M

Explanation:

To find the molarity of the solution, you need to use the molarity equation. This formula looks like this:

Molarity (M) = moles / volume (L)

To use this equation, you need to perform some conversions. You should (1) convert mL to L (by dividing by 1,000), then (2) convert grams NaNO₃ to moles (via molar mass), then (3) plug moles and volume into the molarity equation.

155 mL / 1,000 = 0.155 L

25.0 g NaNO₃           1 mole
---------------------  x  -----------------  = 0.294 moles NaNO₃
                                  85.0 g

Molarity = moles / volume

Molarity = 0.294 moles / 0.155 L

Molarity = 1.8975....

Molarity = 1.90 M

Answer:

Explanation:

The reaction between 2 chloro- 2 methyl pentane and sodium iodide takes place through SN2 mechanism . iodide ion is the nucleophile which attacks the substrate . The rate of such reaction depends upon concentration of both the nucleophile and the substrate .

Hence rate of reaction will be increased by 2 x 2 = 4 times.

option D ) is correct.

Explanation:

The given reaction represents the reaction between a tertiary alkyl halide that is 2-chloro-2-methylpentane and a nucleophile that is NaI.

This reaction favors SN1 mechanism which has order one.

So, the given reaction follows first-order kinetics.

For a first-order reaction, the rate law is:

rate =k [A]

That means the rate of the reaction is dependent on the concentration of reactants.

So, when the concentration of the reactant is doubled then, the rate of the reaction is also doubled.

Among the given options the correct answer is option B) It would double the rate.

Answer:

i feel like it will have an acid smell

Answer:

64.2 L

i watch videos about this stuff because my grades were very low now im bringing the up

Explanation:

In order to be able to calculate the volume of oxygen gas produced by this reaction, you need to know the conditions for pressure and temperature.

Since no mention of those conditions was made, I'll assume that the reaction takes place at STP, Standard Temperature and Pressure.

STP conditions are defined as a pressure of

100 kPa

and a temperature of 0∘C

. Under these conditions for pressure and temperature, one mole of any ideal gas occupies

22.7 L

- this is known as the molar volume of a gas at STP.

So, in order to find the volume of oxygen gas at STP, you need to know how many moles of oxygen are produced by this reaction.

The balanced chemical equation for this decomposition reaction looks like this

2KClO3(s]heat×−−−→2KCl(s]+3O2(g]↑⏐

Answer:

4 protect organs

Explanation:

this would be in biology category btw

Answer:

4.protect organs

Explanation:

your ribs protect your heart and lungs

The balanced equation for the dissolving of aluminum chloride into an aqueous solution with the dissociation of the ions is; AlCl3(s) → Al^3+ (aq) + 3 Cl^-(aq).

An equation is a representation of the change that occurs inside a reaction vessel. Usually, we use this tool to show on paper, a process that we can not see with or eyes.

The equation that shows the balanced equation for the dissolving of aluminum chloride into an aqueous solution with the dissociation of the ions is; AlCl3(s) → Al^3+ (aq) + 3 Cl^-(aq).

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Answer:

They are resonance contributors

Explanation:

Resonance structures are structures that differ only in the distribution or placement of electrons.

Considering the two structures, we can easily see that the two species have the same total number of bonds and electrons differing only in the distribution of these electrons.

Hence, they are resonance contributors.

The electric current is  0.025 A

Electric current refers back to the go with the flow of energy in an electronic circuit and to the amount of strength flowing through a circuit. it's far measured in amperes (A). the bigger the cost in amperes, the more energy is flowing within the circuit.

Ag+ + e¯ →Ag

1F deposits 107.87 g/mol (molecular mass) of silver

1F = 96500 C

Let, 107.87 g/mol needed = 96500 C

Number of coulombs required to deposit 0.3650 g of silver =(96500/107.87) 0.3650  

Q = 326.5 C

According to Faraday’s law, Q = I x t

I = 326.5 C / (216 x 60 s) = 0.025 A

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The mass of the ammonia that is required is  258 g.

The quantitative correlations between the reactants and products in a chemical reaction are the focus of the chemistry subfield known as stoichiometry.

We have to know that;

1 mole of CO2 produces 1 mole of urea

2.2 moles of CO2 produces 2.2 urea

Given that the number of moles of urea = 455 g/60 g/mol

= 7.58 moles

Now;

2 moles of NH3 produces 1 mole of urea

x moles of NH3 produces 7.58 moles of urea

x = 7.58 * 2/1

= 15.16 moles

Mass of the ammonia =  15.16 moles * 17 g/mol

= 258 g

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Answer:

what is the question exactly because there is no question and I don't know what you are exactly looking for

Answer:

Cygnus X-1 21 is the heaviest stellar hole to be discovered. Cygnus X-1 21 weighs 21 times as the sun's mass. Scientists previously assumed wrong, it is around 1.5 times heavier then the last estimate. Cygnus X-1 21 was discovered by scientists using VLBA (Very Long Baseline Array.) This was discovered without gravitational waves which is usually used in science.

The network is 10 radio dishes and ranges to the United States, from Hawaii to the Virgin Islands. VLBA was responsible for tracking radio-bright jets of material flowing out of Cygnus X-1’s black hole for six days straight. Cygnus X-1 is around 7,200 light-years from Earth, which contradicts the last estimate of 6,000. The measurement for this new discovery gives astronomers a tough challenge in their understanding of black holes. Theres more to come in science with each discovery made.

Explanation:

is this good?

In order to prepare the solution required by this question, we would employ the use of 375mg of protein.

Here we are given the ratio of protein to solution that we wish to achieve. Said ratio is 15mg/ml. This means that there should be 15mg of protein for every ml of solution. Since we have 25ml of the solution, we can multiply these values to reach our answer of 375mg of protein.

Therefore, we can confirm that In order to prepare the solution required by this question, we would employ the use of 375mg of protein.

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Answer:

Given total pressure of the gas mixture(hydrogen and helium) is 2.99 atm

Number of moles of hydrogen is ---- 13.2 mol

Number of moles of helium is ---- 19.1 mol

Determine the partial pressure of the helium gas.

Ratio of effusion rates of the two gases.

Explanation:

According to Dalton's law of partial pressures,

partial pressure of a component gas in a mixture is:

partial pressure of a gas = total pressure x mole fraction

mole fraction of helium gas is:

\(mole fraction of helium gas = \frac{number of moles of helium gas}{total number of mioles} \\=>mole fraction of He= \frac{19.1mol}{(19.1+13.2)mol} \\=>mole fraction of He = 0.591\\\)

Partial pressure of He gas is:

\(Partial pressure of He =mole fraction of He * total pressure\\ =0.591 x 2.99atm\\ =1.77atm\)

Effusion rate of a gas is inversely proportional to its square root of its molecular mass.

\(\frac{rate of effusion of H2 gas}{rate of effusion of He gas} =\sqrt{\frac{molar mass of He gas}{molar mass of H2 gas} } \\=> \frac{rate of effusion of H2 gas}{rate of effusion of He gas}=\sqrt{\frac{4g.}{2g} } \\=>\frac{rate of effusion of H2 gas}{rate of effusion of He gas}=1.414:1\)

Hence, rates of effusion of H2:He is 1.414:1.

Answer:

Therefore, none of the zeros is a significant figure and hence there is only one significant figure in this measurement in support G. The measurement is 0.7 minutes. Here again, zero is not a significant figure and therefore the only significant figure is one which is seven in support Edge.

Explanation:

In 0.0000003, there is only one significant figure

Significant figures are the number of digits in a value, often a measurement, that contribute to the degree of accuracy of the value.

We start counting significant figures at the first non-zero digit. Calculate the number of significant figures for an assortment of numbers.

But sometimes when zero is between two non zeros , we can say it is significant. e.g 303, the zero here is significant

Therefore, with this, since 0.0000003 has only one non zeros in the expression, we can therefore say that the expression has only one significant figure.

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At pOH value  of 6.0 the pH value of the following solution is 8.0 and the concentration of [\(H^{+}\) ] ion is \(10^{-8}\)

In this question we will apply the formula

      pH +pOH = 14 . . . . . . . . . . . . .(1)

where pH = concentration of [\(H^{+}\) ] ion

pOH = concentration of [\(OH^{-}\) ] ion

As per the question

pOH =6.0

Putting the value of pOH in equation (1) we get the value of pH

              pH + 6.0 =14

             pH = 14 -6.0

             pH  = 8.0

 The value of pH if the pOH value is 6.0 is 8.0

To find the concentration of \(H^{+}\) ion we will use the following formula

This is calculated by the formula

                                 [\(H^{+}\)} = \(10^{-pH}\)

where we will write the values of pH

Hence the concentration of [\(H^{+}\)} ion is \(10^{-8}\)

Therefore at  pOH of 6.0 the pH value of the following solution is 8.0 and the concentration of [\(H^{+}\) ] ion is \(10^{-8}\)

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The complete question is -

What is the pH value and concentration of [\(H^{+}\) ] ion of the following if the pOH value of the solution is 6.0 ?

The pressure of the environment affects the liquid's boiling point. The boiling point of the liquid is higher when it is under high pressure than when it is under normal atmospheric pressure. For a given pressure, various liquids have different boiling points.

The temperature at which a liquid's vapour pressure equals the surrounding atmosphere is known as the boiling point of the liquid. This temperature causes the liquid to become a vapour.

The temperature of the liquid, the pressure of the atmosphere, and the pressure of the vapour all affect its boiling point.

We know that change in temperature of a system is given by the following formula:

Initial boiling point (T₁) = 80.1 °C

ΔT = T₂ - T₁

2.25 = T₂ - 80.1

T₂ = 82.35  °C

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Answer:

82.35

Explanation:

acellus

Answer:

✔ habitat destruction

Explanation:

the 3 reasons are:

hunting

habitat loss

introduced predators

summed up its habitat destruction

Answer:

Neutrons

Explanation:

Subatomic particles are components atoms, and they include protons, electrons and neutrons. In different isotopes of an atom, the number of neutrons that the atom contains is what changes.

I hope this helps!

The static charge is created by the transfer of electrons and the similar charges left in the hair repel each other resulting in the hair standing up.

Static charge is created by the transfer of electrons between objects, resulting in an imbalance of positive and negative charges.

When two objects come into contact, electrons can be transferred from one object to the other, causing one object to become positively charged by losing electrons and the other to become negatively charged by gaining electrons.

The phenomenon of hair standing up is an example of electrostatic repulsion.

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