Compounds with a ring of resonance bonds are called

Answer:

D

Explanation:

While scientific laws more accurately forecast natural events, scientific theories are beliefs that explain natural happenings. So, the correct option is D.

Scientific laws are explanations for why certain occurrences occur or explanations of the phenomenon occurring itself. The outcomes or the causes of such phenomena are not explained. By stating a link verbally or mathematically, it only clarifies the situation and makes the underlying "science" simpler to comprehend.

On the other hand, scientific theories are those that make an effort to define or clarify why a phenomenon occurs. Its foundation is observation. Before drawing a conclusion, there is still a process of learning or discovery. It is a conceptual framework for explaining and projecting new information.

Thus, the correct option is D.

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Answer:

New pressure = 42216.66 Pa

Explanation:

Given that,

Initial volume, V₁ = 5 m³

Final pressure, P₁ = 101320 Pa

Final volume, V₂ = 12 m³

We need to find the final pressure of the gas. We know that the relation between pressure and volume is given by :

[tex]P\propto \dfrac{1}{V}\\\\P_1V_1=P_2V_2\\\\P_2=\dfrac{P_1V_1}{V_2}\\\\P_2=\dfrac{101320 \times 5}{12}\\\\P_2=42216.67\ Pa[/tex]

So, the new pressure is equal to 42216.66 Pa.

Answer:

lets say your doing a frog

it jumps it speeds up and then slows down

Explanation:

Answer:

P1=1.10atm

V1=2.00L

T1=30.0+273=303

P2=2.40atm

V2=?

T2=80.0+273=353

Explanation:

V2=1.10*2.00*353=776.6

2.40*303=727.2

776.6/727.2=1.0679L

The new volume occupied by the of gas as its temeprature and pressure is raised is 1.07L.

Combined gas law put together both Boyle's Law, Charles's Law, and Gay-Lussac's Law. It states that the ratio of the product of volume and pressure and the absolute temperature of a gas is equal to a constant.

It is expressed as;

P₁V₁/T₁ = P₂V₂/T₂

Given the data question;

To calculate the new volume that the gas occupy, we subtsitute our given values into the expression above.

P₁V₁/T₁ = P₂V₂/T₂

P₁V₁T₂ = P₂V₂T₁

V₂ = P₁V₁T₂  / P₂T₁

V₂ = ( 1.10atm × 2.00L × 353.15K )  / ( 2.40atm × 303.15K )

V₂ = 776.93LatmK / 727.56atmK

V₂ = 1.07L

Therefore, The new volume occupied by the of gas as its temeprature and pressure is raised is 1.07L.

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Answer:

[tex]\boxed {\boxed {\sf 3.94 *10^{23} \ molecules \ C_6 H_ {14} }}}[/tex]

Explanation:

1 mole of any substance has the same number of particles: 6.022 * 10²³. This number is as Avogadro's Number.

The particles can be molecules, atoms, formula units, etc. For this problem, the particles are molecules of C₆H₁₄ or hexane.

We can set up a ratio using Avogadro's Number.

[tex]\frac {6.022 *10^{23} \ molecules \ C_6H_{14}}{1 \ mol \ C_6H_{14}}[/tex]

Multiply by the given number of moles: 0.655

[tex]0.655 \ mol \ C_6H_{14} * \frac {6.022 *10^{23} \ molecules \ C_6H_{14}}{1 \ mol \ C_6H_{14}}[/tex]

The moles of hexane will cancel, because one is the "numerator" (techincally 0.655 is over 1) and the other is in the denominator of the ratio.

[tex]0.655 * \frac {6.022 *10^{23} \ molecules \ C_6H_{14}}{1 }[/tex]

[tex]0.655 * {6.022 *10^{23} \ molecules \ C_6H_{14}}[/tex]

[tex]3.94441*10^{23} \ molecules C_6H_{14}[/tex]

The original value of moles has three significant figures, so our answer must have the same. For the number we found, that is the hundredth place.

The 4 in the thousandth place tells us to leave the 4 in the hundredth place.

[tex]3.94 *10^{23} \ molecules \ C_6H_{14}[/tex]

0.655 moles of hexane is equal to approximately 3.94 *10²³ molecules of hexane.

Answer:

The chemical elements are arranged in order of increasing atomic number. The horizontal rows are called periods and the vertical columns are called groups. Elements in the same group have similar chemical properties. This is because they have the same number of outer electrons and the same valency.

Answer:

igneous to sedimentary rock

Explanation:

Answer:

ingeous rocks to sedimentary rocks

Answer:

letter b

Explanation:

I dunno if I'm right cuz I'm just a grade five sorry if this can't help

Answer:

it's natural selection

Explanation:

adaptation is when you adapt to some situation

Answer:

The tendency for water molecules to stick together causes it to causes spheres in space. ... Magnetic-like molecules on water's surface cause the surface to behave like an elastic skin. Each molecule is pulled with equal tension by its neighbors.J

Explanation:

Answer:

B.) One oceanic plate converging with one continental plate.

HOPE THIS HELPS!

Answer:

C: Two tectonic plates transforming

Answer:

The white stuff we know as sugar is sucrose, a molecule composed of 12 atoms of carbon, 22 atoms of hydrogen, and 11 atoms of oxygen (C12H22O11). Like all compounds made from these three elements, sugar is a carbohydrate

Answer:

.

Explanation:

Some of the glucose required for cellular respiration in humans is obtained by external food source which are rich in carbohydrates.

Cellular respiration is the process in which cells combines the oxygen with the foodstuff molecules, and converting the chemical energy into life sustaining activities as energy.

In the human body, we get the glucose for the cellular respiration from the external food source which are riched in carbohydrates, starch, etc. After converting the chemical energy to glucose then oxygen is absorbed in the lungs and circulate the blood through out the body by red blood cells.

Hence, we get glucose from food source.

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Answer:

We will increase the temperature for a solution to be dissolved more into water.

To form a solution, energy is required to break the particles. If more energy is required to break the bonds of solute and solvent than the energy is released, then its called endothermic reaction.

For an endothermic solution, we would have to provide heat / temperature (energy) so that more solute can be dissolved in water which can increase the rate of solution.  

Answer:

Your answer will be C. 1/32

Answer:

C. 1/32

Explanation:

Answer:

It says that the energy (E) in a system (an atom, a person, the solar system) is equal to its total mass (m) multiplied by the square of the speed of light (c, equal to 186,000 miles per second).

Explanation:

Answer:

163.940671 grams

Explanation:

You can view more details on each measurement unit: molecular weight of Na3PO4 or grams This compound is also known as Trisodium Phosphate. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles Na3PO4, or 163.940671 grams.

Answer:

Expof HCl are required to produce 7.50 moles of ZnCl2? 6. Copper ... When 9.34 g of zinc react with excess hydrochloric acid how many grams of zinc chloride will.lanation:

Answer:

it is dotted

Explanation:

Answer:

Option A, describes the endothermic reaction represented by this  graph

Explanation:

In this graph the energy released (or the potential energy) at the time of product formation is lower than the potential energy of the reactants. Hence, additional energy input will be required to form the product. Thus, energy is absorbed during the reaction.

Option A is correct

Answer: energy is given off by the reaction

Explanation:

Answer:

Answer Below

Explanation:

Your feet and hands are thin compared to the rest of your body. Thin stuff has a large surface area compared to volume. Surface area is where you lose heat and volume is where you generate heat. Because of this, they lose heat quickly and do not generate enough heat to stay warm. To fix this your body also moves heat around from your warm core to your hands and feet using your blood. Your blood is warm. It gets to be that way because it runs through areas, mostly in your torso, that are always warm

Just putting a comment here, I needed to test something

Answer:

See Explanation

Explanation:

An endothermic reaction is one in which energy is absorbed and the change in enthalpy for the reaction is positive.

If we look at the reaction 2HgO + 45kcal ----> 2Hg + O2; we will notice that

i) 45kcal of energy was taken in (absorbed) for the reaction to occur

ii) The value of the reaction enthalpy is positive

For these two reasons, the reaction is an endothermic reaction as written.

Answer:

Covalent Network Solids

Explanation:

A covalent network solid or network solid is defined as the chemical compound in which the atoms are joined by a covalent bond in continuous network and it extends all through the material.  There are no single molecules on a network solid, the whole crystal may be considered as a macromolecule.

Some of the characteristics of the covalent network solids are :

Answer:

The correct answer is making observations in his experiment. In his cathode ray tube experiment J. J. Thomson proved that the cathode rays are indeed negatively charged particles.

Answer:

shape or size? over the course of the month

Answer:

24.1 %

Explanation:

This is the reaction of oxygen between hydrogen sulfide.

The equation is:

2H₂S  +  O₂ →  2S  +  2H₂O

As the oxygen is the excess, limting reagent is the H₂S.

We convert the mass to moleS: 22g / 34.06 g/mol =

0.646 moles

Ratio is 2:2. 2 moles of sulfide can produce 2 moles of sulfur.

Then, 0.646 moles of sulfide will produce 0.646 moles of S.

We convert the moles to mass: 0.646 mol . 32.06 g/mol =

20.71 g

That's the theoretical yield.

% yield = (produced yield / theoretical yield) . 100

% yield = (5 g/ 20.71g) . 100 =  24.1 %

Answer:

The concentration of the 3.2 g of sodium chloride in 8 dm³ of water is 6.845 × 10⁻³ M

Explanation:

The concentration of a solution is given as either the ratio of mass to volume, or the ratio of volume to volume or as molarity

[tex]Concentration, C = \dfrac{Mass}{Volume} = \dfrac{Volume}{Volume} = \dfrac{Number \ of \ moles }{Liters \ of \ solution}[/tex]

The number of moles present in 3.2 g of sodium chloride, 'n', is given as follows;

[tex]n = \dfrac{Mass}{Molar \ mass}[/tex]

The molar mass of sodium chloride, NaCl = 58.44 g/mol

n = 3.2 g/58.44 g/mol = 0.0547570157 moles

8 dm³ = 8 Liters

Therefore, the concentration, C = 0.0547570157 moles/(8 liters) = 6.845 × 10⁻³ M

The concentration of the 3.2 g of sodium chloride in 8 dm³ of water = 6.845 × 10⁻³ Molar solution.