The table shows the chemical formulas for four substances. Substance Chemical Formula 1 C2H60 CH 2. "8" 18 ليبيا CH,CH_Br C.H.. 4. Which substances have the same number of carbon atoms? A Substances 1 and 2 B Substances 2, 3, and 4 C Substances 2 and 3 only D Substances 1 and 3​

Answer:

Products have more potential energy than reactants.

As shown in the image.

Answer:

The key difference between linear and bent molecules is that linear molecules have atoms bonded to each other, forming a straight molecule, whereas bent molecules have atoms arranged in a bend-shape with an angle. The terms linear molecules and bent molecules describe the shapes of different molecules.

Explanation:

bcz of molecules ............

Answer:

there is no picture, but it will be a graph that shows a mostly straight line going up to the right

Explanation:

Explanation:

hope it is helpful to you

Answer:

The mass of ammonium sulfate would be 8.86 x 1024 grams.

Explanation:

Ammonium sulfate is composed of four atoms of oxygen (O) and two atoms of nitrogen (N). Therefore, 4.43 x 1024 oxygen atoms would require 8.86 x 1024 grams of ammonium sulfate.

Ammonium sulfate is an inorganic compound composed of two nitrogen atoms (N) and four oxygen atoms (O). The molecular formula for ammonium sulfate is (NH4)2SO4.

This means that for every two nitrogen atoms, there are four oxygen atoms. Therefore, for 4.43 x 1024 oxygen atoms, there would be 8.86 x 1024 grams of ammonium sulfate required.

Answer:

Explanation:

Atomic weight of strontium ( Sr ) is 88 .

Atomic weight of Beryllium ( Be) is 9 .

Both are bivalent .

2 x 96500 coulomb is required to decompose 88 g of Sr .

88 g of Sr requires 2 x 96500 coulomb of charge

20 g of Sr will require   2 x 96500 x 20 / 88 coulomb of charge

coulomb of charge required = 43863.63 coulomb .

9 g of Be requires 2 x 96500 coulomb of charge

2 x 96500 coulomb of charge gives  9 g of Be

43863.63 coulomb .of charge gives 9 x 43863.63 / (2 x 96500 ) g of Be

= 2.04 g.

Answer: Ionization energy

Explanation:

Your welcome

Answer: I believe its two

Explanation:

Answer:

Non-polar covalent bond

Explanation:

The bond between two nonmetal atoms is always covalent.

hope my answer helps you

Answer:

0.33 moles.

Explanation:

Assuming the gas is ideal, we can solve this problem by using the following formula:

Where:

We input the data:

The answer is thus the first option, 0.33 moles.

Answer:

0.33 mole

Explanation:

Answer:

Option C, 3 molecule is correct

Explanation:

The formula is of Ferric oxide

3Fe2O3

The number 3 ahead the chemical formula represents the number of molecules of the given substance. In general the formula of iron (III) oxide is Fe2O3

Since there are three molecules of it hence the formula is written as 3Fe2O3

Option C, 3 molecule is correct

3.00 x 108 m/s should be written in scientific notation. Medical Notation (numbers less than 1.0) Add a decimal place after the decimal, to the right. To the left of the decimal point, there should only be one number. The brand-new number ranges from 1.0000 to 9.9999.

For the purpose of providing an exact result, certain elements of scientific notation must be included. In scientific notation, all numbers have the format "m x 10n. Important components for determining the scientific notation include the following:

Decimal: You move the decimal a specific number of times to the right or left of the coefficient to discover the scientific notation until it becomes a number equal to or greater than one and less than 10.

Coefficient: To calculate this value, the decimal point must move a predetermined amount of times. An amount that is one or larger and less than ten is referred to as a coefficient.

Base: The base number is always 10. The exponent comes into play when multiplying to arrive at the final solution.

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Answer:

See explanation.

Explanation:

Hello there!

In this case, considering the given information, it is not possible to figure out such order of reaction with respect to water as it is not involved in the given chemical reaction:

2E(g)+ F(g)+O(g)_

However, we can say that the order of reaction is 2 with respect to E (power of 2 in the rate law), 1 with respect to F (power of 1 in the rate law) and 0 with respect to O (power of 0 or not present in the rate law).

Regards!

Answer:

2. Redox

Explanation:

A redox reaction is that in which an element is reduced while another element is oxidized. For example, let's consider the following redox reaction.

Fe + S ⇒ FeS

Fe is oxidized because it loses electrons to form Fe²⁺, while its oxidation number increases from 0 to 2+.

S is reduced because it gains electrons to form S²⁻, while its oxidation number decreases from 0 to 2-.

Answer:

If the tank were heated to 1253ºC, the pressure of the tank would be 40,734.41 mmHg.

Explanation:

Given that a closed tank contains pure nitrogen gas at a pressure of 855 mmHg and a temperature of 26.3ºC, to determine what the pressure would be if the tank were heated to 1253 ° C the following calculation must be performed:

26.3 = 855

1.253 = X

(1,253 x 855) / 26.3 = X

1,071,315 / 26.3 = X

40,734.41 = X

Therefore, if the tank were heated to 1253ºC, the pressure of the tank would be 40,734.41 mmHg.

Answer:

Volume is how much space the object is taking up, whereas mass is the measurement of the amount of matter in the object.

Explanation:

Answer: B is correct.

Explanation:

Answer A is a chemical change because of intense changes of color and expansion.

Answer C is a chemical change, as hydrogen and water are chemically bonding together.

Answer D is a chemical change because oxidation involves loss of electrons during a chemical reaction.

On the other hand, melting is a physical change. Therefore, answer B is the correct answer.

Answer:

19.75 %

Explanation:

The percent by mass of silver nitrate in the solution can be calculated using the following formula:

As all the required data is already given by the problem, we can now proceed to calculate the percent by mass:

Answer:

Ni2+ is reduced at the cathode.

The anode reaction could be Cr -> Cr3+ + 3e-

As the cell runs, anions will migrate from the Ni2+|Ni compartment to the other compartment.

Explanation:

As we know, in a galvanic cell, oxidation occurs at the anode and reduction occurs at the cathode. Hence at the cathode, nickel is reduced as follows;

Ni^2+(aq) + 2e ----> Ni(s)

Considering the reduction potential of the Ni2+ | Ni half cell (-0.25 V) and that of the Cr3+/Cr half cell (-0.74 V), the later has a more negative reduction potential and will most likely serve as the anode of the galvanic cell.

Lastly, the reduction of Ni^2+ leads to a build up of anions in the cathode compartment. To maintain neutrality in the cell, some anions migrate to the other compartment.

The domain of the function that has been shown are all real numbers. Option D

Let us note that when we are talking about the domain of the function, we mean the areas that the function is able to have a value. We are also trying to define the areas where the actual value of the function can be determined.

It is normal that all the mathematical functions that we have must have a domain and a range. The domain of the function would depend on the kind of function that it is and that determines what its domain would be.

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The organic compound 3-hexanone can be prepared from ethylene using the second method given in the options.

3-hexanone is an organic compound classified to the ketones. Ketones are compounds with C=O group. 3-hexnone has the carbonyl group in the third carbon in the chain.

3- hexanone can be synthesized alkene sources by first converting them to alkynes. This process is oxidation. Ethylene can be oxidized to ethyne by treating with HBr and NaNH2 followed by hydrolysis.

The obtained higher alkyne or hexyne undergone acid hydrolysis in presence of sulphuric acid giving 3-hexanone.

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Limitations in making progress with Engineering Better Batteries is that electric vehicles are being prevented  to make progress in terms of size  and range , progress which is made is solid state batteries.

A solid-state battery is a battery technology that uses solid electrodes and a solid electrolyte, instead of the liquid or polymer gel electrolytes  which are found in lithium-ion or lithium polymer batteries.

While solid electrolytes were first discovered in the 19th century, several drawbacks have prevented it's widespread application. Developments in the late 20th and early 21st century have caused renewed interest in solid-state battery technologies, especially in the context of electric vehicles, starting in the 2010s.

Solid-state batteries can provide potential solutions for many problems of liquid Li-ion batteries, such as flammability, limited voltage, unstable solid-electrolyte interphase formation, poor cycling performance and strength.

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Answer:

The answer to your questions are given below

Explanation:

The answer to the questions given above can simply be obtained by writing the electronic configuration of each atom.

The electronic configuration of each atoms can be written as follow:

Fluorine, F (9) => 1s² 2s²2p⁵

Sodium, Na (11) => [Ne] 3s¹

Helium, He (2) => 1s²

Calcium, Ca (20) => [Ar] s²

Nitrogen, N (7) => 1s² 2s²2p³

Sulphur, S (16) => [Ne] 3s²3p⁴

Answer:

[tex]\boxed {\boxed {\sf 0.5 \ moles}}[/tex]

Explanation:

At standard temperature and pressure (STP), 1 mole of any gas has a volume of 22.4 liters. This applies to oxygen, so let's create a proportion.

[tex]\frac {1 \ mol}{22.4 \ L}[/tex]

Since we are trying to find the moles in 11.2 liters, we should multiply by that number.

[tex]11.2 \ L *\frac {1 \ mol}{22.4 \ L}\\[/tex]

The units of liters cancel.

[tex]11.2 *\frac {1 \ mol}{22.4 }[/tex]

Condense into 1 fraction.

[tex]\frac {11.2 }{22.4 } \ mol[/tex]

[tex]0.5 \ mol[/tex]

At STP, 11.2 liters of oxygen gas is equal to 0.5 moles of oxygen gas.

Answer:

i think thats correcr!

Explanation:

Answer:

A balanced chemical reaction is an equation where the number of atoms of each type in the response is the same on both reactants and product sides.

Explanation: Burning, and cooking are two examples. :)

Hope you are happy :)

Answer:

yes

Magnesium (Mg) combines with chlorine (Cl2) to form a new product as magnesium chloride (MgCl2). Therfore its a combination reaction and the balanced equation can be written as: Mg(s)+Cl2(g)→MgCl2(s)