Write the dissociation reaction for each of the following
(If anyone can help me with 14 at most) please and thank you

Answer:

D.  The reaction described by curve B is occurring with a catalyst.

Explanation:

The peak in the curve is the activation energy.  According to this graph, the activation energy was lowered.  A catalyst is what you can use to lower the activation energy.

The most likely accounts for the difference between curve A and curve B on the energy diagram is the reaction described by curve B is occurring with a catalyst,  therefore  option (d) is correct.

A catalyst is a chemical substance which alters the rate of a reaction without itself undergoing any permanent chemical change.

A catalyst does not initiate a chemical reaction. A catalyst does not be consumed in the reaction.

Catalysts tend to react with reactants to form intermediates and at the same time facilitate the production of the final reaction product. After the whole process, a catalyst can regenerate.

Catalysts encourage molecules to react and make the whole reaction process easier and efficient.

The most likely accounts for the difference between curve A and curve B on the energy diagram is the reaction described by curve B is occurring with a catalyst,  ,hence option (d) is correct.

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Answer:

D. For the atoms lower in the periodic table, the valence electrons are in higher energy levels and farther from the nucleus.

Explanation:

Atomic radius increases down the group because down the group, there an increase in the number of principle energy levels occupied. Now, these higher principal energy levels are made up of orbitals that are larger than the orbitals from the lower energy levels in size.

Therefore, the effect of this is that the greater number of principal energy levels will outweigh the increase in nuclear charge since nuclear charge also increases down the group and this in turn makes the atomic radius to increase as we go down the group.

Answer: C. For the atoms lower in the periodic table, the balance electrons are in higher energy levels and farther from the nucleus.

Explanation: As the valance electrons orbit farther from the nucleus the energy level increases from the top to the bottom of the periodic table. So the atoms lower in the periodic table, the balance electrons are in higher energy levels and farther from the nucleus, which result in an increase in the atomic radius.

Answer:

Nose

Explanation:

Because every time I touch it's nose, it will hide itself into the shell faster than other places

Hi!the main weakness of the tortoise is it's shell.The most shell of tortoise are so hard that most animals can't even make a scratch on it But flip one over and getting up will be a huge problem. They can suffer from dehydration or get picked off by predators. And even though reptiles are sun loving, they still can't regulate their body temperature and this could lead to over heating and death.

Answer:the opposite charge attracts like magnets

Explanation:

Answer:

The correct answer is h20

Explanation:

i got it right on an exam.

Answer:

nitrous oxide

Explanation:

Answer:

a) Neutral

b) Basic

c) Acidic

d) Acidic

e) Basic

f) Neutral

g)

Explanation:

a) KCl is a neutral salt because K ion in solution form produces both acid and base (KOH)

b) NaClO produces basic solution because ClO− is the conjugate base of a weak acid

c) Al(ClO4)3 will produce acidic solution because ClO4 is component of strong acid

d)  NH4Cl will produce acidic solution because NH4+  ion is a strong conjugate acid of the weak base and Cl- is a weak conjugate base of the strong acid

e) Basic

f) Neutral salt

g) Acidic

Answer:

its a polymer

Explanation:

Answer:

The answer is "Greater than zero, and greater than the rate of the reverse reaction".

Explanation:

It applies a rate of reaction to the balance, a forward response dominates until it reaches a constant. This process is balanced before 52 mmol of the reactant[tex]HC H_{3} \ CO_2[/tex], to which 3 is added. In balance, that rate of the forward reaction was its rate with forwarding reaction, both of which are higher than 0 as the response has achieved balance so that both species get a level greater than 0.

Answer:

[tex]2LiCl +Br_2 \rightarrow 2LiBr +Cl_2[/tex]

Single displacement reaction.

Explanation:

Hello!

In this case, by firstly rearranging the chemical reaction as shown below:

[tex]LiCl +Br_2 \rightarrow LiBr +Cl_2[/tex]

It is also necessary to balance it at follows:

[tex]2LiCl +Br_2 \rightarrow 2LiBr +Cl_2[/tex]

Thus, since bromine and chlorine are being exchanged as a result of the atoms rearrangement, we infer this is a single displacement reaction.

Best regards!

Answer: The energy of a mole of photon associated with this frequency is [tex]49.5\times 10^{-20}J[/tex]

Explanation:

The energy and frequency are related by :

[tex]E=N\times h\times \nu[/tex]

E = energy of photon

N = number of moles = 1

h = planks constant = [tex]6.6\times 10^{-34}Js[/tex]

[tex]\nu[/tex] = frequency = [tex]7.5\times 10^{14}Hz[/tex]

[tex]E=1\times 6.6\times 10^{-34}Js\times 7.5\times 10^{14}s^{-1}=49.5\times 10^{-20}J[/tex]

The energy of a mole of photon associated with this frequency is [tex]49.5\times 10^{-20}J[/tex]

Answer: C. All atoms of one kind share common properties.

Explanation:

if i am correct the volume of nitrogen gas has to equal to molecules density, making the substance 1.27 liters :)

Answer:

20.9grams

Explanation:

Using the formula:

Q = m × c × ∆T

Where;

Q = amount of heat (joules)

m = mass of substance (g)

c = specific heat of water (4.184 J/g°C)

∆T = change in temperature (°C)

According to the provided information;

Q = 3.5kJ = 3.5 × 1000 = 3500J

m = ?

c of water = 4.184 J/g°C

∆T = 66°C - 26°C = 40°C

Using Q = m × c × ∆T

m = Q ÷ (c × ∆T)

m = 3500 ÷ (4.184 × 40)

m = 3500 ÷ 167.36

m = 20.9

mass = 20.9grams

Answer:

no idea with the answer pls check with otherr

Answer:

140 L (3 sig-figs; includes the zero)*

Explanation:

PV = nRT => V = nRT/P

P = 0.800atm

V = ?

n = 5 moles

R =0.08206 L·atm/mol·K

T = -1°C = (-1 + 273)K = 272K

V = nRT/P = (5mol)(0.08206 L·atm/mol·K)(272K)/(0.800atm) = 139.5 L

*=> 140 Liters (3 sig-figs) => zero is a sig-fig b/c it was result of rounding 139.5 Liters to obtain 140 Liters.

Answer:

lol i know this isnt the best but Your comic strip can be about how when you put smores in a campfire, the smores become burnt  that is example of energy transfer because energy is traveling as heat to another object.

Explanation:

Answer:

Renewable Energy Source. Among all the benefits of solar panels, the most important thing is that solar energy is a truly renewable energy source

Reduces Electricity Bills

Diverse Applications

Explanation:

Answer:

7.2 mol * (6.02*10^23)= 4.3*10^24 atoms

Explanation:

The number of atoms in one mole of chlorine contains 6.022 × 10²³ . Therefore the number of Cl atoms in 7.2 moles is 4.3 × 10²⁴.

One mole of every substance contains 6.022 × 10²³ atoms. This number is called Avogadro number. One mole of every elements contains Avogadro number of atoms.

Chlorine is 17th element in periodic table. Cl is a non-metal with high electronegativity. The atomic mass of Cl is 35.5 g. Thus, 35.5 g contains Avogadro number of Cl atoms.

One mole of Cl contains  6.022 × 10²³  atoms. Tus, number of atoms in 7.2 mol is Avogadro number times the number of moles.

no.of atoms =  6.022 × 10²³  × 7.2 =  4.3 × 10²⁴ atoms.

Therefore, 7.2 moles of Cl contains 4.3 × 10²⁴ atoms.

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Answer:

7) C. Sodium

8) G. 1 valence electron

Explanation:

Answer:

C

Evaporation happens when a liquid substance becomes a gas. When water is heated, it evaporates. The molecules move and vibrate so quickly that they escape into the atmosphere as molecules of water vapor.

Answer:

32000 kilometers

Explanation:

In order to convert from miles to kilometers, we need to use a conversion factor. In other words, we put miles in the denominator and kilometers in the numerator, as follows:

That way the units for miles cancel each other, leaving the equivalent amount in kilometers.

Answer:

b. in the middle

Explanation:

your answer choice is correct!

Answer: Frequency

Explanation: Without a doubt my answer is Frequency, none of the other options have nothing to do with sound waves so Frequency is my best bet.

Answer:

gain

Explanation:

Answer:

Hydrogen gas (H2) and oxygen gas (O2) react to form liquid hydrogen peroxide (H2O2). The atoms of the reactants have combined to form a new substance. The new substance has its own set of properties that is different from the properties of each reactant.

Explanation:

Answer:

d.

Explanation:

It is a force that occurs when surfaces touch each other.

Answer:

a. 5.36x10⁻⁴ g/mL

b. 4.29x10⁻⁵ g/mL

Explanation:

As the units for concentration are not specified, I'll respond using g/mL.

a. We divide the sample mass by the final volume in order to calculate the concentration:

b. We can use C₁V₁=C₂V₂ for this question: