The table below shows some data for the compounds CH2Cl and CH Br. Compound Molar Mass (g/mol) | | CHCI CH,Br 50.5 94.9 Dipole Moment Boiling Point (D) (K) 1.87 | 249 | 1.81 277 AH aporisation (kJ/mol 18.9 22.8 (i) Identify all the types of intermolecular forces that exist among molecules in CH,C1(1). (ii) In terms of intermolecular forces, explain why the boiling point of CH,Br(l) is greater than that of CH CI(I). (d) A 2.00 mL sealed glass vial containing a 1.00 g sample of CH2Cl(l) is stored in a freezer at 233 K. (i) Calculate the pressure in the vial at 298 K assuming that all the CH,CI(1) vaporizes. (ii) Explain why it would be unsafe to remove the vial from the freezer and leave it on a lab bench at 298 K.

Answer:

Jeniah's calculation of the molar mass of hydrogen peroxide is correct.

Explanation:

Here is a step-by-step explanation of how she arrived at the answer:

In this case, the molar mass of hydrogen peroxide that Jeniah calculated is 18 grams per mole, which is the correct molar mass for this compound. This means that if Jeniah uses this amount of hydrogen peroxide, she will have the correct amount of the compound needed for her experiment. However, it's important to note that in addition to knowing the amount of a substance needed for an experiment, it's also important to handle the substance safely and follow all necessary precautions to avoid accidents or harm.

The total time taken by half of the oxygen to effuse through the membrane is 68.18 hours.

The rate of effusion can be calculated by :

r = V/t

r = 1.5 L/24hr

r = 0.0626 L/hr

According to Graham's Law, effusion is inversely proportional to the square root of their molar mass.

\(\frac{r1}{r2}\)  = √\(\frac{M2}{M1}\)

The molar mass of He is 4 g/mol  and molar mass of O is 32 g/ mol.

Putting the values

0.0626 L/hr ÷ \(r_{2}\) = √32/4

\(r_{2}\) = 0.022 L/hr

Therefore, the time taken for effusion of half of 3 L that is 1.5 L of oxygen is:

Time = 1.5 L/ 0.022L/hr = 68.18 hours

Hence, the total time taken by half of the oxygen to effuse through the membrane is 68.18 hours.

If you need to learn more about oxygen click here:

https://brainly.com/question/12167380

#SPJ4

What remains after the distillation are impurities and H2SO4

Pinacolone is a ketone that can be prepared by the acid-catalyzed dehydration of pinacol, which is a diol. If pinacol is reacted with an acid catalyst such as sulfuric acid, it will undergo dehydration to form pinacolone.

The product obtained after the distillation of pinacolone will depend on the purity of the starting material, the method of distillation used, and any impurities that may have been introduced during the synthesis or purification process.

Learn more about distillation :https://brainly.com/question/290371

#SPJ1

The volume of HCl that is required to prepare the solution of 0.1M of 100ml from a solution of 2M of molarity is 5ml.

The given molarity of the solution of HCl is 2M and the volume of solution that is needed to prepare is 100ml with the molarity 0.1M. Now it is required to find the volume that is to be needed to prepare the solution of 100ml with 0.1M. For that the following formula for dilution is used,

M₁V₁ = M₂V₂

By substituting the given values into the formula of dilution, we get

2 x V₁ = 0.1 x 100

2V₁ = 10

V₁ = 10/2

V₁ = 5ml

Therefore, 5ml of HCl is required to prepare a solution of 0.1M of solution of 100ml.

To know more about titration, click below:

https://brainly.com/question/186765

#SPJ4

During the oxidative phosphorylation of cellular respiration, hydrogen can be considered as a reducing agent because it loses electrons while molecular oxygen is an oxidizing agent because it accepts electrons.

Reducing and oxidizing agents are different molecules that accept and donate electrons in chemical redox reactions such as oxygen which accept and hydrogen which donates.

Therefore, with this data, we can see that reducing and oxidizing agents are related and they work together to move electrons in different redox reactions such as occur during cellular respiration.

Learn more about reducing and oxidizing agents here:

https://brainly.com/question/19599298

#SPJ1

Answer:    36.9 g

Explanation:

P4 + 5O2 = P4O10  Balanced equation

moles P4 present = 23.9 g x 1 mole/123.88 g = 0.193 moles

moles O2 present = 20.8 g x 1 mol/32 g = 0.65 moles O2

From balanced equation, mole ratio O2 : P4 is 5:1.  Is 0.65 moles O2 5x 0.193 moles?  NO.  You don't have enough O2.

O2 is limiting in this reaction.

theoretical moles of P4O10 = 0.65 moles O2 x 1 mole P4O10/5 moles O2 = 0.13 moles P4O10

mass of P4O10 produced = 0.13 moles x 283.9 g = 36.9 g

According to the give percent yield, the   observed yield of P₄O₁₀ is 9.514 g .

Percent yield is defined as the ratio of actual yield to the theoretical yield multiplied by 100. If the actual and theoretical yield are same then the percent yield is 100%.If actual yield is less than the theoretical yield then the percent yield is less than 100%.Reason of this condition arising is the incompletion of reaction or loss of sample during recovery process.

In cases where percent yield is over 100% it indicates that more sample is recovered than the predicted amount.This condition arises when there are other simultaneous reactions taking place leading to the formation of product. It can also arise if there is incomplete removal of impurities from the sample .

In the given example, observed yield is calculated by first calculating theoretical yield,which in this case is as follows, 123.88 g phosphorous gives 283.88 g of  P₄O₁₀

Hence, 6.20 g of phosphorous will produce 6.20×283.88/123.88=14.20 g.

Now, the observed yield is calculated as, percent yield×theoretical yield/100=67×14.20/100=9.514 g.

Thus, the observed yield of  P₄O₁₀ is 9.514 g.

Learn more about percent yield,here:

https://brainly.com/question/17042787

#SPJ5

A corporation has issued 10% AA rated sinking fund debentures at par. Three years later, similar issues are being offered in the primary market at 12%. The correct answer is: C) II and III

The current yield represents the annual interest payment divided by the current market price of the bond. As the market interest rates have decreased from 10% to 8%, the current yield of the outstanding 10% bond will be lower than the nominal yield. As the bond was issued at par and market interest rates have decreased, the dollar price of the bond will be at a premium to par. This is because investors are willing to pay more for a higher coupon bond (10%) when compared to similar bonds in the primary market offering a lower coupon (8%). Therefore, both statements II (The current yield will be lower than the nominal yield) and III (The dollar price of the bond will be at a premium to par) are true.

Learn more about interest payment here:

https://brainly.com/question/13914148

#SPJ11

The complete question is: A corporation has issued 10% AA rated sinking fund debentures at par. Three years later, similar issues are being offered in the primary market at 8%. Which of the following are TRUE statements about the outstanding 10% issue?

I The current yield will be higher than the nominal yield

II The current yield will be lower than the nominal yield

III The dollar price of the bond will be at a premium to par

IV The dollar price of the bond will be at a discount to par

A I and III

B I and IV

C II and III

D II and IV

Answer:

sorry I don't know the answer hope you understand

A potential disadvantage of an enzyme having a very high affinity for its substrate, other things being equal, is that the enzyme-substrate complex will be in a deep energy well (option C).

This means that the enzyme-substrate complex will be more stable, which could potentially slow down the rate of the reaction as it takes more energy for the complex to transition to the product state.

Option A is not accurate, as pulling the substrate out of the solution does not necessarily decrease the driving force for the forward reaction.

Option B is also not accurate, as high affinity does not inherently cause spatial distortion of the enzyme.

Option D is incorrect, as tight binding does not necessarily result in a higher energy transition state complex.

Therefore, the correct answer is not E, as not all of the options are accurate.

The most suitable answer is option C: The enzyme-substrate complex will be in a deep energy well, meaning that the enzyme-substrate complex will be more stable.

To know more about enzymes, refer here:

https://brainly.com/question/31385011#

#SPJ11

Answer:

what help.....

i don't understand your question what help....

can you told me what help...

Answer: 45

Explanation:

mass number = number of protons and neutrons

atomic number = number of protons

to find neutrons subtract atomic number from mass number

so 80 - 35 = 45 neutrons

Answer:

0.000000000402000 in scientific notation is  4.02000 × 10-10

I- (aq) + 6H₂O(l) + 6H+(aq) → IO₃-(aq) + 3H₂O(l) + 2e-; 2 electrons are needed and the reaction is an oxidation.

The half-reaction is:

i- (aq) → IO₃- (aq)

To balance this half-reaction of Iodine, we need to add water and hydrogen ions on the left-hand side and electrons on one side to balance the charge. In acid solution, we will add H₂O and H+ to the left-hand side of the equation. The balanced half-reaction in acid solution is:

I- (aq) + 6H₂O(l) + 6H+(aq) → IO₃-(aq) + 3H₂O(l) + 2e-

Therefore, 2 electrons are needed to balance this half-reaction.

The half-reaction involves iodine changing its oxidation state from -1 to +5, which means that it has lost electrons and undergone oxidation. Therefore, this half-reaction represents an oxidation process.

In summary, the balanced half-reaction in acid solution for the oxidation of iodide to iodate is I- (aq) + 6H₂O(l) + 6H+(aq) → IO₃-(aq) + 3H₂O(l) + 2e-. This process involves the loss of two electrons, representing an oxidation process.

Learn more about Iodine

brainly.com/question/16867213

#SPJ11

In the given reaction: Mg(s) + 2 HCl(aq) → MgCl(s) + H2(g) The correct statement about the reaction is: B) H is the reducing agent because it loses electrons.

Let's break down the given reaction and analyze the oxidation and reduction processes involved.

The reaction is: Mg(s) + 2 HCl(aq) → MgCl(s) + H2(g)

In this reaction, magnesium (Mg) reacts with hydrochloric acid (HCl) to produce magnesium chloride (MgCl) and hydrogen gas (H2).

To determine the oxidizing and reducing agents, we need to identify the species undergoing oxidation and reduction by looking at the changes in their oxidation states.

Oxidation involves an increase in oxidation state, while reduction involves a decrease in oxidation state.

Let's examine the oxidation states of the relevant elements:

Now, let's analyze the reaction:

Mg(s) + 2 HCl(aq) → MgCl(s) + H2(g)

Based on these observations, we can conclude the following:

Therefore, the correct statement is:

B) H is the reducing agent because it loses electrons.

To learn more about oxidation and reduction, Visit:

https://brainly.com/question/13892498

#SPJ11

Step 1:

ok we have to use the formula PV=nRT

p=Pressure (must be converted to atm)= 780 mmHg

1 amt= 760 mmHg use this as a conversion factor

780 mmHg (1 atm/760 mmHg)= 1.026

V= Volume= 5.00 mL = o.5 L

n=number of moles which we have to find first

R= 0.0821

T(convert to Kelvins by adding 273.15 to the celsius temperature)= 135 C + 273.15= 408.15 k

Now plug in->

(1.026 atm)(o.5 L)= n(0.0821)(408.15 K)

(1.026 atm)(0.5 L)= n(33.509115)

(0.513)= n(33.509115)

n(number of moles)= 0.01532 mol

Now we have to convert to moles using Avagodro's number which states that 1 mol = 6.022 x 10^23 molecules or atoms

So 0.01532 mol (6.022 x 10^23 number of molesules)/ (1 mol) = 9.225704 x 10^21 = 9.226 x 10^21 colecules

Step 2

You must transfer pressure into pascals, 780 mm Hg = 103991 Pa

135*C = 408.15 k

then from the equation pV = nRt

n = pV / RT (T in Kelvins, V in M^3)

n = 103991 x 500 x 10^-6 / (8.314 x 408.15)= 0.015322 moles of N2

1 mol of everything is 6.022 x 10^23 particles, so 0.15322 moles is 0.15322 x 6.022 x 10^23 = 9.2269084 x 10^21 molecules

Explanation:

Hope this helps :)

Explanation:

COMPONENTS OF ENVIRONMENT

Environment mainly consists of atmosphere, hydrosphere, lithosphere and biosphere. But it can be roughly divided into two types such as (a) Micro environment and (b) Macro environment. (a) Micro environment refers to the immediate local surrounding of the organism.

Answer:

The basic component of the Environment are water,forest,living beings,e.t.c

Answer:

chemical knowledge

Explanation:

The pursuit of chemical knowledge for its own sake, no set goal Applied chemistry Research that is directed toward a practical goal or application, geared toward a specific goal

Answer: applied research

Explanation:

A Straight line sloping upward (atmospheric CO2 levels would not seasonally oscillate, but would have increased over time).

A straight line up the graph means it has a positive slope, meaning that even though atmospheric carbon dioxide levels would not oscillate through the seasons, in this case in tropical environments in the northern and southern hemisphere Earth, that is, the climate close to the equator, the positive slope indicates that carbon dioxide levels would increase over time.

Photosynthesis is the process through which green plants and certain other organisms make their food using carbon dioxide and water in the he presence of Sunlight.

During photosynthesis, energy conversion from light energy into chemical energy takes place.

Photosynthesis is one of the major processes that helps to eliminate and reduce the quantity of carbon dioxide in the atmosphere,it also serve to make oxygen present in the atmosphere.

To learn more about Photosynthesis  visit:https://brainly.com/question/29776072

#SPJ4

The balanced chemical reaction will be H₂O₂=H₂+O₂

Decomposition is as a chemical reaction in which one reactant breaks down into two or more products

Example   AB=A+B

The decomposition reaction of hydrogen peroxide can be written as:

                                        H₂O₂=H₂+O₂

According to law of conservation of mass, mass can neither be created nor be destroyed. Thus the number of atoms of each element must be same on reactant and product side

Therefore, the balance the equation for the decomposition reaction is

H₂O₂=H₂+O₂

To know more  about Decomposition reaction visit the link

https://brainly.com/question/21272450

#SPJ1

Answer:

C

Explanation:

No reaction because not enough moles of silver are present for the reaction to occur.

The wavelength of a 2.99 Hz wave is approximately 114.38 meters.

To determine the wavelength of a wave, you need to know the wave's frequency (in hertz, Hz) and the speed of the wave. The relationship between wavelength (λ), frequency (f), and speed (v) is given by the equation:

v = λ * f

Where:

v = speed of the wave (in meters per second, m/s)

λ = wavelength of the wave (in meters, m)

f = frequency of the wave (in hertz, Hz)

Substituting the given frequency of 2.99 Hz into the formula, we get:

wavelength = 343 m/s / 2.99 Hz

wavelength = 114.38 meters

Therefore, the wavelength of a 2.99 Hz wave is approximately 114.38 meters.

Learn more about wavelength ,

https://brainly.com/question/31143857

#SPJ4

The samples that will conduct electricity are: Solid NaCl and NaCl solution.

:When a substance dissolves in water, it forms ions that can conduct electricity. Solid sugar and sugar solution don't conduct electricity.

When electricity is passed through sugar solution or solid sugar, it will not conduct electricity. Similarly, NaCl is a salt that conducts electricity because it forms ions when dissolved in water.

NaCl solution conducts electricity due to the movement of these ions.

Here is the summary:The substances that can conduct electricity are those that are able to dissolve in water and form ions. Solid sugar and sugar solution do not conduct electricity because they are unable to form ions in water. Solid NaCl and NaCl solution are able to form ions in water and therefore can conduct electricity.

Learn more about electricity click here:

https://brainly.com/question/776932

#SPJ11

Answer:did h find the answer

Explanation:

A 30-day supply of Levoxyl at a dosage of one 13 μg tablet per day contains 0.39 mg of Levoxyl.

For a patient taking one 13 μg tablet of Levoxyl per day, the total amount of levothyroxine they are receiving is 13 micrograms. To calculate the total amount in a 30-day supply, we simply multiply this amount by 30.

13 μg/tablet x 1 tablet/day x 30 days = 390 μg

Note that the microgram (μg) is a unit of mass equal to one millionth of a gram, while the milligram (mg) is a unit of mass equal to one thousandth of a gram. To convert μg to mg, we divide by 1000:

390 μg / 1000 = 0.39 mg

Levoxyl is a medication used to treat hypothyroidism, a condition where the thyroid gland doesn't produce enough hormones to regulate the body's metabolism. The active ingredient in Levoxyl is levothyroxine sodium, which is a synthetic form of the hormone thyroxine (T4).

Levoxyl tablets are available in several strengths, ranging from 25 mcg to 300 mcg. The recommended dosage depends on the patient's age, weight, and the severity of their hypothyroidism. In general, adults with normal thyroid function usually require about 1.6 mcg of levothyroxine per kilogram of body weight per day.

For more question on Levoxyl click on

https://brainly.com/question/29924433

#SPJ11

Answer:process of cellular respiration allows plants to break down glucose into ATP. ... Although plants use photosynthesis to produce glucose, they use cellular respiration to release energy from the glucose.

Explanation:

Answer:

What can cause excessive pressure on the high side of an active self-contained recovery device? A closed recovery tank inlet valve or excessive air or other non condensables in the recovery tank (either A or B) Portable refillable tanks or containers used to ship recovered refrigerants must meet what standard(s)?

Explanation:

please mark me as brainliest thank you

Based on the data provided:

The variables in an experiment are those factors or quantities that can be changed or controlled by the researcher while conducting the research.

There are three types of variables in an experiment:

An experiment usually states a hypothesis that is tested.

Learn more about independent and dependent variables at: https://brainly.com/question/25223322

#SPJ1

Answer:

289.8g

Explanation:

Using the formula as follows:

mole = mass/molar mass

Molar mass of SnF = 119 + 19

= 138g/mol

Using mole = mass/molar mass

2.1 = mass/138

mass = 2.1 × 138

mass = 289.8g