What are extensive properties of Oxygen?

The relative atomic mass of atom X is 9.

The relative atomic mass of an element is the average mass of its atoms relative to 1/12th the mass of a carbon-12 atom.

Given that atom X is 9 times heavier than 1/12th the mass of a carbon-12 atom, we can calculate the relative atomic mass of X as follows:

Relative atomic mass of X = (9 × 1/12) × relative atomic mass of carbon-12

The relative atomic mass of carbon-12 is defined as exactly 12. Therefore, we have:

Relative atomic mass of X = (9 × 1/12) × 12

= 9

For more question on atomic mass click on

https://brainly.com/question/30390726

#SPJ11

\(\setlength{\unitlength}{1cm}\begin{picture}(0,0)\thicklines\put(0,3){\bf Fe}\put(0,0){\bf -3}\put(4,3){\sf O}\put(4,0){\bf -2}\put(0.2,2.9){\vector(4,-3){3.5}}\put(3.8,2.9){\vector(-4,-3){3.5}}\end{picture}\)

\(\\ \sf\longmapsto Fe_2O_3\)

\(\setlength{\unitlength}{1cm}\begin{picture}(0,0)\thicklines\put(0,3){\bf Ca}\put(0,0){\bf 2}\put(4,3){\sf OH}\put(4,0){\bf -1}\put(0.2,2.9){\vector(4,-3){3.5}}\put(3.8,2.9){\vector(-4,-3){3.5}}\end{picture}\)

\(\\ \sf\longmapsto Ca(OH)_2\)

Note:-

View the answer from web at brainly.com for complete understanding.

The pH of the buffer solution can be determined using Henderson equation. The pH is obtained as 4.51.

A buffer solution is a solution with constant pH and its maintains the pH of a solution upto a desired point. The pH of a buffer solution is determined using Henderson equation as written  below:

pH = Pka + ln [A-]/[HA]

Where, [A-] be the concentration of the salt and [HA ] be that of the acid.

Given that 10 g of acid and its salt are dissolved in 1 L solution. Thus,

no.of moles of acid = 10 g / 46  = 0.217 in L means 0.217 M

concentration of salt = 10 g/ 84 g in one L = 0.119 M.

ka = 1.8 × 10⁴

pka = log Ka = 4.25

pH = 4.25 + ln (0.119 / 0.217)

     = 4.51

Therefore, the pH of the solution is 4.51.

To find more on buffer solution, refer here:

https://brainly.com/question/24262133

#SPJ1

Answer:

The effective number of bonds in sulfate ion is 1.5

Explanation:

The number of chemical bonds between two atoms is known as the bond order.

In covalent bonds between two atoms, a single bond has a bond order of one, a double bond has a bond order of two, a triple bond has a bond order of three.

If there are more than two atoms in a molecule, the effective number of bonds can be determined by applying the following steps:

1. Draw the Lewis structure.

2. Count the total number of bonds.

3. Count the number of bond groups between individual atoms.

4. Divide the number of bonds between atoms by the total number of bond groups in the molecule.

For the sulfate ion, the resonance structure is shown in the attachment below. From the structure;

Total number of bonds = (2 × 2) + (2 × 1) = 6

Total number of bond groups = 4

Effective number of bonds = 6/4 = 1.5

Therefore, the effective number of bonds in sulfate ion is 1.5

This is due to the fact that a substance's chemical qualities, such as its molecular form, polarity, and functional groups, govern how it behaves and interacts with other substances.

By illustrating the spatial arrangement of atoms and chemical bonds within the molecule, chemical structure establishes the molecular geometry of a compound. In doing so, chemists are given a crucial visual depiction of a chemical formula.

In a chemical reaction, reactants come into contact with one another, atoms in the reactants break their connections with one another, and then the atoms reorganise and form new bonds to create the products.

To know more about molecule visit:-

https://brainly.com/question/19556990

#SPJ1

Answer:

Most similar- oxygen

Least similar- sodium

Explanation:

The complete question is shown in the image attached.

Now let us consider all the options in the questions carefully. We do know that hydrogen forms  covalent bonds with sulphur. Two hydrogen atoms form form two polar covalent bonds with one sulphur atom. The molecule is bent owing to the presence of two lone pairs of electrons on the sulphur central atom.

Oxygen is in the same group as sulphur in the periodic table. The compound between hydrogen and sulphur is strikingly similar to the compound formed between sulphur and hydrogen due to chemical similarity of compounds of elements in the same group of the periodic table. Hence H2O bears the greatest similarity to H2S.

The bond between hydrogen and halogens is also polar covalent but less similar to the bond between sulphur and hydrogen.

Lastly, the bond between hydrogen and sodium is ionic and least similar to the bond between hydrogen and sulpur. We actually have in that compound, Na^+ H^-. Sodium transfers one electron to hydrogen as is implied in the ionic formula shown.

Hence the answer above.

Answer

Solid

liquid

Gas

Explanation:

Paper used as a writing material is made of pulp (wood).

Paper is a sheet material used for writing on or printing on (or as a non-waterproof container), usually made by draining cellulose fibres from a suspension in water.

Paper is made from cellulose found in trees, which are the main source of cellulose fibre (or woodpulp). Besides woodpulp, paper can be made from other materials such as cotton, flax, esparto, straw, hemp, manilla and jute.

Wood pulp is usually a softwood, used for pulping to make paper.

Learn more about pulp at: https://brainly.com/question/23590026

#SPJ1

Answer:

Benzene must be kept away from flames.

Explanation:

Edguenuity 2020

The most accurate statement about Benzene is :  Keep Benzene away from flames.

Although your question is incomplete a general answer is provided based on the MSDS provided in the question

Benzene is a colorless gas that exhibits a high level of flammability, it also has a sweet odor just like gasoline, it is a cancer-causing agent when humans are exposed to it for too long. based on its flammability it is advisable to keep flammable materials and flammable sources ( flames ) away from Benzene. and to also reduce the rate of human exposure to benzene as well.

Therefore we can conclude that based on the MSDS provided in the question the most accurate statement about benzene is Benzene should be kept away from flames.

Learn more :https://brainly.com/question/14408817

0.065 moles are there in 2.6 grams of Argon.

What is moles?

Moles, in chemistry, are a measure of the amount of a substance. One mole is equal to 6.022 x 10^23 particles or molecules of that substance. This number is known as Avogadro's number. Moles are used to measure the amount of a substance because it is easier to work with than counting individual particles or molecules. For example, it is easier to work with the number of moles of a substance than to count the individual atoms, molecules, or ions.

No. of moles =given mass/molar mass

Or,

n=w/m ______ (1)

So in this question we are given the value of w= 2.6 g

Now, the molar mass of argon is 39.948 g/mol

m=39.948 g/mol

So, substituting these values in equation (1) we get,

n= 2.6/ 39.948 = 0.065 mol

Therefore, 0.065 moles are in 2.6 grams of Argon.

To learn more about moles from the link

https://brainly.com/question/26416088

#SPJ1

Answer:

Explanation:

The percentage error of a certain measurement can be found by using the formula

\(P(\%) = \frac{error}{actual \: \: number} \times 100\% \\ \)

From the question

actual density = 2.49g/mL

error = 2.49 - 1.47 = 1.02

We have

\(p(\%) = \frac{1.02}{2.49} \times 100 \\ = 40.96385542...\)

We have the final answer as

Hope this helps you

Explanation:

Element X naturally forms ions with a charge of +1.

Group 1A (alkali metals) forms ions with a +1 charge.

For example, Na

Na tends to lose its outermost electrons and forms Na+1.

Elements in the same group will behave similarly and will form similar compounds

------

We can have NaCl => Na+1 + Cl-1

These elements from group 1 can not gain electrons, they lose their electrons.

If X has a charge of +1, this was because it lost its outermost electron.

Answer: Elements X tends to gain one electron

\( \LARGE{ \boxed{ \rm{ \pink{Solution:}}}}\)

We know, 1 m³ of space can hold 1000 l of the substance.

⇛ 1 m³ = 1000 l----(1)

And, 1 l is 1000 times more than 1 ml

⇛ 1 l = 1000 ml------(2)

So, From (1) and (2),

⇛ 1 m³ = 1000 × 1000 ml

⇛ 1m³ = 1000000 ml

We had to find,

⇛ 1.40 m³ = 1.40 × 1000000 ml

⇛ 1.40 m³ = 140/100 × 1000000 ml

⇛ 1.40 m³ = 1400000 ml

⇛ 1.40 m³ = 14,00,000 ml / 14 × 10⁵ ml / 1.4 × 10⁶ ml

☃️ So, 1.40 m³ = 14 × 10⁵ ml / 1.4 × 10⁶ ml.

━━━━━━━━━━━━━━━━━━━━

Answer:

130 Liters

Explanation:

if 1 mol is 22.4 L, then 5.8 mol is 130 L (129.92 but use sig figs)

Answer:

0.07mol/kg

Explanation:

Given parameters:

Mass of NaCl solution  = 120g

Mass of water  = 30kg

Unknown:

Molality of the solution =?

Solution:

The molality of a solution is the number of moles of the solute per mass of the solution.

 Molality  = \(\frac{number of moles of solute}{mass of solution}\)  

  Number of moles of NaCl  = \(\frac{mass}{molar mass}\)  

 Molar mass of NaCl  = 23 + 35.5  = 58.5g/mol

   Number of moles of NaCl  = \(\frac{120}{58.5}\)   = 2.05mole

So;

  molality  = \(\frac{2.05}{30}\)   = 0.07mol/kg

Answer:

0.068

Explanation:

The options which are not true of standard cell potentials are the anode are option B, C, and D.

The standard cell potential refers to the potential difference between the cathode and anode and measures the potential of equilibrium. The standard potentials are all measured at 298 K, 1 atm, and with 1 M solutions. In a galvanic cell, current is generated when electrons flow externally through the circuit from the anode to the cathode due to a difference in potential energy between the two electrodes in the electrochemical cell. A galvanic cell generates electric current spontaneously if its cell potential is positive. Standard cell potential is determined calculated as the standard reduction potential of the cathode minus the standard reduction potential of the anode. The cathode is always the species with the greater standard reduction potential, while the anode is the species with the lower standard reduction potential. The reduction potentials are not scaled by the stoichiometric coefficients when calculating the standard cell potential.

Note: The question is incomplete. The complete question probably is: Identify the options below that are not true of standard cell potentials Select all that apply: A) A galvanic cell generates electric current spontaneously only if the cell potential is positive. B) The anode is the species with the greater standard reduction potential. C) Standard cell potential is dependent on the stoichiometry of the overall reaction. D) A galvanic cell generates electric current spontaneously only if the cell potential is negative.

Learn more about Standard cell potential:

https://brainly.com/question/19036092

#SPJ4

Answer:

Water.

Explanation:

Water is the most important agent of chemical weathering. Two other important agents of chemical weathering are carbon dioxide and oxygen.

The ratio of neutrons to protons, or the N/Z ratio, plays a crucial role in determining a nucleus' stability. The range of N/Z ratios in which nuclei are stable is generally referred to as the belt of stability.

If the forces between the constituents of the nucleus are equal, an atom is stable. If these forces are out of balance or if the nucleus has an excessive amount of internal energy, an atom is unstable (radioactive).

Z = 104 for Rutherfordium, element 104. The isotopes 261Rf and 262Rf, having masses of 261 and 262, respectively, have the longest half-lives. Accordingly, N/Z ratios are:

261Rf: N/Z = (261-104)/157 = 1.08

262Rf: N/Z = (262-104)/158 = 1.09

These N/Z ratios are a little bit higher than the average belt of stability values, which are about 1.0 for heavy nuclei. These isotopes are thought to be reasonably stable because they are close enough.

Z = 109 for Meitnerium, element 109. The isotopes 278Mt and 282Mt, with masses of 278 and 282, respectively, have the longest half-lives. Accordingly, N/Z ratios are:

278Mt: N/Z

To know more about neutrons visit:-

https://brainly.com/question/29248303

#SPJ1

Answer:

4.69 x 10²⁴ molecules CH₄

Explanation:

To find the amount of molecules, you need to (1) convert grams to moles (via molar mass) and then (2) convert moles to molecules (via Avogadro's Number). It is important to arrange the conversions in a way that allows for the cancellation of units. The final answer should have 3 sig figs to match the sig figs of the given value (125 g).

Molar Mass (CH₄): 16.05 g/mol

Avogadro's Number:

6.022 x 10²³ molecules = 1 mole

125 g CH₄         1 mole            6.022 x 10²³ molecules
----------------  x  ---------------  x  -------------------------------------  =  
                          16.05 g                       1 mole

=  4.69 x 10²⁴ molecules CH₄

Answer:

Shells

The maximum number of electrons that can be accommodated in a shell is based on the principal quantum number (n). It is represented by the formula 2n2, where ‘n’ is the shell number. The shells, values of n, and the total number of electrons that can be accommodated are tabulated below.

Shell and ‘n’ value Max. Electrons in the Electron Configuration

K shell, n=1 2*12 = 2

L shell, n=2 2*22 = 8

M shell, n=3 2*32 = 18

N shell, n=4 2*42 = 32

L shell:  n =2

hence,

2n²

= 2(2)²

i.e. 8 electrons can fit in the l shell

hence max no. of electrons is 8

so configuration in L shell is,

2, 8...

Answer:

  0.2 M

Explanation:

The molarity is the number of moles per liter:

  (0.05 moles)/(0.25 liter) = 0.2 moles/liter = 0.2 M

Life will come out to be 10 days. This is the required value of half life.

what is radioactive isotope?

To learn more about isotope refers to:

https://brainly.com/question/364529

#SPJ1

The two chemical compounds are not the same, because their ratio is not equal. In both samples the composition of lead and oxygen is different.

A chemical compound is a substance made of numerous similar molecules (or molecular entities) joined by chemical bonds and comprising atoms from various chemical elements. Therefore, a molecule made up of only one type of atom is not a compound. Chemical reactions, which may entail interactions with other molecules, can change a compound into a distinct substance. Atomic bonds may be broken or new ones created during this process.

sample 1 = mass of lead / mass of oxygen = 12.92g/2g = 6.46 .

sample 2 = mass of lead/ mass of oxygen = 34.27 - 14.39/14.39 = 1.38 .

so, the ratios are not the same.

Hence, the two chemical compounds are not the same, because their ratio is not equal. In both samples the composition of lead and oxygen is different.

To know more about Chemical compounds, check out:

https://brainly.com/question/26487468

#SPJ1

The mass of hydrogen needed to produce 51.0 grams of ammonia is  ≈ 9.07 grams.

To determine the mass of hydrogen required to produce 51.0 grams of ammonia (NH3) using the Haber process, we need to calculate the stoichiometric ratio between hydrogen and ammonia.

From the balanced chemical equation:

3 H₂(g) + N₂(g) → 2 NH₃(g)

We can see that for every 3 moles of hydrogen (H₂), we obtain 2 moles of ammonia (NH₃).

First, we need to convert the given mass of ammonia (51.0 grams) to moles. The molar mass of NH₃ is 17.03 g/mol.

Number of moles of NH₃ = Mass / Molar mass

                     = 51.0 g / 17.03 g/mol

                     ≈ 2.995 moles

Next, using the stoichiometric ratio, we can calculate the moles of hydrogen required.

Moles of H₂ = (Moles of NH₃ × Coefficient of H₂) / Coefficient of NH₃

           = (2.995 moles × 3) / 2

           ≈ 4.493 moles

Finally, we can convert the moles of hydrogen to mass using the molar mass of hydrogen (2.02 g/mol).

Mass of H₂ = Moles × Molar mass

          = 4.493 moles × 2.02 g/mol

          ≈ 9.07 grams

Therefore, approximately 9.07 grams of hydrogen is needed to produce 51.0 grams of ammonia in the Haber process.

Know more about the mass of hydrogen here:
https://brainly.com/question/14083730

#SPJ8

The vapor pressure of butane in the lighter at 25.0 °C is approximately 0.493 atm.

We are given that the boiling point of butane at 1 atm pressure is -1.0 °C, which is equivalent to 272.15 K. At this temperature, the vapor pressure of butane is 1 atm. We are also given that the enthalpy of vaporization of butane is 22.44 kJ/mol and R = 8.314 x 10⁺³ kJ/mol K.

We want to find the vapor pressure of butane at 25.0 °C, which is equivalent to 298.15 K. Substituting these values into the Clausius-Clapeyron equation, we get:

ln(P2/1 atm) = (-22.44 kJ/mol / (8.314 x 10⁻³ kJ/mol K)) * (1/298.15 K - 1/272.15 K)

Solving for P2, we get:

P2 = 1 atm * e⁻²² kJ/mol / (8.314 x 10⁻³ kJ/mol K)) * (1/298.15 K - 1/272.15 K)]

P2 = 0.493 atm

Learn more about pressure on

https://brainly.com/question/28012687

#SPJ1

Answer:

The equation is balanced

Explanation:

There are 3Mg,2N,12H,6O and on the other side its the same amount on the other side

Answer:

Pressure

Explanation:

Answer:

The solubility of a gas in a liquid would be increased by an increase in its pressure. Thus, Option D is correct.

Explanation:

According to Henry's law: The solubility of a gas in a liquid is directly proportional to the pressure of that gas above the surface of the solution.

Thus, as the pressure increases the solubility will also increase.

Answer:

Explanation:

The equation must be balanced on both sides to show the law of conservation of mass. So, as long as it is equaled, the law is shown.

The altered activity of the Pyruvate dehydrogenase enzyme is most likely contributing to his symptoms.

Pyruvate dehydrogenase is an enzyme that catalyzes the conversion of pyruvate to generate dihydrolipoamide and CO2.

This enzyme (Pyruvate dehydrogenase) is required to metabolize alcohol present in the blood.

In conclusion, the altered activity of the Pyruvate dehydrogenase enzyme is most likely contributing to his symptoms.

Learn more about Pyruvate dehydrogenase here:

https://brainly.com/question/16346028

#SPJ1