Explain why a random copolymer is obtained when 3,3-dimethyl-1-butene undergoes cationic polymerization.

Answer:

The answer will have to be A

To solve this, we must know each and every concept related to surface tension and viscosity as well. Therefore, mx will be less than my at liquid air interface.

The tendency to reduce surface area produced by the tension of a liquid's surface film as a result of the surface layer's particles being drawn to the liquid's bulk is called  surface tension.

Surface tension is caused by a net inward force that makes the surface operate like an elastic membrane on which objects may float freely. This net inward force is caused by a stronger cohesion between liquid molecules than adhesion between liquid and air molecules.

There is less surface tension in liquid x. As a result, it is unable to contain as many wax particles on its surface as liquid Y can. The liquids will combine uniformly. It is possible to combine two liquids with viscosities that are either lower or greater than the initial liquids.

Therefore, mx will be less than my at liquid air interface.

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Answer:

4 mol B

Explanation:

Step 1: Write the balanced generic equation

2 A + 4 B → 2 C

Step 2: Establish the appropriate molar ratio

According to the balanced equation, the molar ratio of B to C is 4:2.

Step 3: Calculate the moles of B needed to produce 2 moles of C

2 mol C × 4 mol B/2 mol C = 4 mol B

Answer:

[tex]3.99x10^6 \mu L[/tex]

Explanation:

Hello there!

In this case, for this units conversion problem, it turns out necessary to write the equivalence statement for liters and quarts as follows:

1 qt = 0.946353 L

Thus, the conversion set up turns out to be:

[tex]4.22qt*\frac{0.946353 L}{1qt} \\\\=3.99L[/tex]

Next, we convert to microliters as follows:

[tex]3.99L*\frac{1\mu L}{10^{-6}L}\\\\=3.99x10^6 \mu L[/tex]

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Answer:

9E , Badagry road , off marine road , apapa , Lagos State

Explanation

Answer:

Ammonium chloride

Explanation:

because is a salt which is highly soluble in water than potassium

Answer:

c = π/T*R

c = 0.199M

Explanation:

Is measured to be 5.1 atm at an absolute temperature of 312. K. Write an equation that will let you calculate the molarity c of this solution. Your equation should contain only symbols. Be sure you define each symbol other than R.

The osmotic pressure of a solution, π, is defined as:

π = c*T*R

As we know osmotic pressure π = 5.1atm, T = 312K and R = 0.082atmL/molK

we can replace in the equation as follows:

π= c*T*R

c = 5.1atm/312K*0.082atmL/molK

Answer:

Newly discovered star is a younger star

Explanation:

The composition of the newly discovered star is Hydrogen, Lithium, Neon, Sodium, Mercury

It consists of both hydrogen and helium of which the old stars are not made up of as they are heavier than the new stars.

Considering the above fact, it can be stated that the new star is a young star.

Answer:

A newly discovered star is a younger star because the composition of the newly discovered star is Hydrogen, Lithium, Neon, Sodium, and Mercury. And also further consists of both hydrogen and helium of which the old stars are not made up of, as they are heavier than the newer stars. And by considering that fact; it can be stated that the new star is a young star.

Explanation:

I did the lab

Answer:

See explanation and image attached

Explanation:

When 1 mole of hydrogen is added to 3-hexyne, the addition occurs on the same face or side of the triple bond to yield cis-2-hexene in the presence of lindlar catalyst which prevents further hydrogenation. This is known as syn addition.

The syn addition is achieved because the hydrogen molecule is first adsorbed on the surface of the palladium metal and is subsequently attached to the same face of the triple bond in 3-hexyne as shown in the image attached to this answer.

Answer:

H 4so8 is the answer of balance the reaction

Answer:

It looses an electron

Explanation:

We must remember that sodium chloride is an ionic compound. In an ionic compound, a metal is often bonded to a non metal.

The metal looses electron(s) and the nonmetal accepts electron(s). The metal forms its cation while the non metal forms its anion.

Thus an ionic compound is basically a pair of ions held by electrostatic interaction.

Thus, when chlorine becomes part of sodium chloride, it gains one electron from sodium and becomes Cl^-

Answer:

30.3 g

Explanation:

At STP, 1 mol of any gas will occupy 22.4 L.

With the information above in mind, we calculate how many moles are there in 32.0 L:

Then we calculate how many moles would there be in 16.6 L:

The difference in moles is:

Finally we convert 0.689 moles of CO₂ into grams, using its molar mass:

Answer:

The external atmospheric pressure decreases and so does the boiling point of the liquid.

Explanation:

We know that pressure decreases with height. Thus atmospheric pressure decreases at higher elevation.

The implication of this is that, if I take a liquid from sea level to a higher elevation, the external atmospheric pressure on the liquid will decrease and so does its boiling point.

Hence, the liquid boils at a lower temperature when placed at a higher elevation. For this reason, the boiling point of a liquid is lower on the mountain.

Answer:

The correct answer is 1.498.

Explanation:

Based on the given information, the volume of NaOH needed for the titration is 14.53 ml, and the concentration of NaOH given is 0.1031 M.

The volume of NaOH, that is, 14.53 ml can also be written as 14.53 × 10⁻³ L.

The concentration of NaOH, that is, 0.1031 M can also be written as 0.1031 moles/Litre.

Molarity (M) is determined as,

M = No of moles/Volume in litres

No of moles = Molarity × Litres

No of moles = 0.1031 moles/Litres × 14.53 × 10⁻³ L

No of moles = 1.498 × 10⁻³ L

Now, number of millimoles = 1.498 × 10⁻³ L × 1000 (millimoles = moles × 1000)

Number of millimoles = 1.498

The number of millimoles of NaOH required for the titration is 1.50 mmol

From the question,

We are to determine the number of millimoles of NaOH required for the titration

From the given information

The titration required 14.53 mL of 0.1031 M NaOH solution

From the formula

Number of moles = Concentration × Volume

Concentration of the NaOH = 0.1031 M

Volume of the NaOH = 14.53 mL

∴ Number of millimoles of NaOH required = 0.1031 × 14.53

Number of millimoles of NaOH required = 1.498043 mmol

Number of millimoles of NaOH required ≅ 1.50 mmol

Hence, the number of millimoles of NaOH required for the titration is 1.50 mmol

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Answer:

Mass of HCl leftover = 6.4 g

Explanation:

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

NaOH + HCl —> NaCl + H₂O

Next, we shall determine the masses of NaOH and HCl that reacted from the balanced equation. This can be obtained as follow:

Mass of NaOH = 23 + 16 + 1

= 40 g/mol

Mass of NaOH from the balanced equation = 1 × 40 = 40 g

Molar mass of HCl = 1 + 35.5 = 36.5 g/mol

Mass of HCl from the balanced equation = 1 × 36.5 = 36.5 g

SUMMARY:

From the balanced equation above,

40 g of NaOH reacted with 36.5 g of HCl.

Next, we shall determine the mass of HCl required to react with 7 g of NaOH. This can be obtained as follow:

From the balanced equation above,

40 g of NaOH reacted with 36.5 g of HCl.

Therefore, 7 g of NaOH will react with = (7 × 36.5)/40 = 6.4 g of HCl.

Thus, 6.4 g of HCl is required for the reaction.

Finally, we shall determine the leftover mass of HCl. This can be obtained as follow:

Mass of HCl given = 12.8 g

Mass of HCl that reacted = 6.4 g

Mass of HCl leftover =?

Mass of HCl leftover = (Mass of HCl given) – (Mass of HCl that reacted)

Mass of HCl leftover = 12.8 – 6.4

Mass of HCl leftover = 6.4 g

The complete question is as follows: Which statement describes the way in which energy moves between a system reacting substances in the surroundings.

A) molecule Collisions transfer thermal energy between the system and its surroundings

B) The thermal energy of the system and it’s surroundings increase

C) The potential energy of the system and it’s surroundings increases

D) molecular collisions create energy that is then released into the surroundings

Answer: The statement, molecule Collisions transfer thermal energy between the system and its surroundings describes the way in which energy moves between a system reacting substances in the surroundings.

Explanation:

When there will occur an increase in kinetic energy of molecules then there will occur more number of collisions.

When kinetic energy between these molecules tends to decrease then they will release heat energy into their surroundings.

As a result, it means that molecule collisions transfer thermal energy between the system and its surroundings.

Thus, we can conclude that the statement molecule Collisions transfer thermal energy between the system and its surroundings describes the way in which energy moves between a system reacting substances in the surroundings.

_________

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Answer:

The graph shows a directly proportional relationship between volume and temperature and represents Charles' Law.

Explanation:

The relation between volume and temperature is given by :

Ideal gas law, PV = nRT

Where

P is pressure

V is volume

R is gas constant

T is temperature

As volume and temperature have direct relationship. Charles law states that there is a direct relationship between volume and temperature. The correct option is (a).

Answer:

AgCl

Explanation:

The reaction that takes place is:

The precipitate (meaning a solid substance) formed is silver chloride, AgCl.

All salts formed with silver and a halogen (F, Cl, Br, I) are insoluble in water, meaning that when working with aqueous solutions they will be precipitates.

Answer:

The diluted solution have an absorbance less than the original solution

Explanation:

As you can see in the graph, the absorbance of a substance is directly proportional to the concentration of the substance (Lambert-Beer law). That means a solution more concentrated than another will have an absorbannce greater than the more diluted solution.

In the problem, you are diluting the original sample by the addition of 10mL of distilled water, that means,

Answer:

»Climatic change leads to malnutrition.

e.g when its cold season, osmoregulation decreases and rate of metabolism declines.

This is because the enzymes lack that optimum temperature for their catalytic activity to take place hence improper digestion.

»Leads to promotion of predation in ecosystem.

such as reptiles e.g snakes, lizards get away from shelters on cold days since they are cold blooded, hence their predators such as animals, birds increase.

Given :

A 3.82L balloon filled with gas is warmed from 204.9K to 304.8 K.

To Find :

The volume of the gas after it is heated.

Solution :

Since, their is no information about pressure in the question statement let us assume that pressure is constant.

Now, we know by ideal gas equation at constant pressure :

[tex]\dfrac{V_1}{V_2} = \dfrac{T_1}{T_2}\\\\\dfrac{3.82}{V_2}= \dfrac{204.9}{304.8}\\\\V_2 = \dfrac{304.8}{204.9} \times 3.82\\\\V_2 = 5.68 \ L[/tex]

Hence, this is the required solution.

Answer:

Jodi is violating two rules; She is not wearing any safety equipment and managed to catch fire to herself. She is also not wearing gloves or safety goggles like the other two. Kimberly is leaving fire unattended, and can cause many accidents and if chemicals come in contact in the wrong way, it could be catastrophic. Kimberly is also carelessly using a fire extinguisher carelessly and chemicals in the can cause accidents.

Explanation:

I hope this helps <3

Answer:

A chemical Reaction Takes place when New bonds are formed between atoms to create new compounds

Explanation:

There are four signs that a chemical reaction has occurred: a change in color, a change in temperature, formation of a gas or formation of a precipitate. A precipitate is a solid that forms when two liquid solutions are mixed.

Answer:

1. dependent clause

2. Independent clause

3. Independent clause

4. Dependent clause

Explanation:

In English language, there are two types of clauses (a group of words that contain subject and predicate) viz; independent clause and dependent clause.

INDEPENDENT CLAUSE is a clause that can stand alone to form a complete sentence, possessing a subject and a predicate.

On the other hand, a DEPENDENT CLAUSE cannot stand alone to form a complete and meaningful sentence, but instead depends on another sentence to make sense. It is often recognizable as they start with subordinating conjunctions such as while, because, when etc.

According to this question, the following are examples of independent and dependent clauses:

1. Because he cannot pick up our son - dependent clause

2. I am typing on the computer - independent clause

3. They will have gone to Disney World - independent clause

4. Before we arrive in Florida - dependent clause

Answer:

Correct option is

D

1 g of B(s)

Larger is the number of moles, larger is the number of molecules.

As molar mass of B is lowest (=11 g), it will have larger number of moles. Hence, its 1 g will have highest number of molecules and moles.

Answer:d

Explanation: