The percent composition of oxygen in XeO3 is

Answer:

c

Explanation:

i rememer this from 3rd grade

Answer:

60j because 100-60=40j

Answer:

def CO2

Explanation:

Answer:

A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding.

Explanation:

More than one pair of electrons can be shared between atoms to form double or triple covalent bonds. Unlike ionic bonds, covalent bonds are often formed between atoms where one of the atoms cannot easily attain a noble gas electron shell configuration through the loss or gain of one or two electrons.

Solution :

Given that the violet line from Balmer series having a recorded wavelength of 410 nm. As the recorded wavelength is 410 nm we know, the wavelength range of violet light is 380 nm -450 nm. So the 410 nm is corresponding to violet light wavelength.

We know, among all the series of lines spectrum of [tex]$H_2$[/tex] atom, only the Balmer series are in visible range. For Balmer series, the equation of wavelength associated with the e-transition of n = 2 orbit to n > 2 is

[tex]$\frac{1}{\lambda}=R\left[\frac{1}{2^2}-\frac{1}{n^2}\right]$[/tex]

where, R = Rydberg constant = 109678 per cm

            λ = wavelength

Here the recorded λ = 410 nm = [tex]$410 \times 14^{-7} \ cm$[/tex]

∴ [tex]$\frac{1}{410 \times 10^{-7}}=109678\left[\frac{1}{2^2}-\frac{1}{n^2}\right]$[/tex]

[tex]$\frac{1}{2^2}-\frac{1}{n^2}=\frac{1}{410 \times 10^{-7}\times 109678}$[/tex]

[tex]$\frac{1}{4}-\frac{1}{n^2}=0.222$[/tex]

[tex]$\frac{1}{n^2}=\frac{1}{4}-0.222$[/tex]

[tex]$n^2=\frac{1}{0.0276}$[/tex]

[tex]$n^2=36.2$[/tex]

[tex]$n^2 $[/tex] ≈ 36

n = ±6

Here, n is the principle quantum number. It cannot be negative, so the value of n = 6 for hydrogen atom if the violet line from Balmer series that has a recorded wavelength of 410 nm.

The value of n for the Hydrogen transition in the Balmer series with the wavelength 410 nm has been 6.

The principal quantum number in the Balmer series transition has been given by n. The minimum transition for the Balmer series has been from the 2 energy level.

The expression for the wavelength transition can be given by:

[tex]\rm \dfrac{1}{\lambda}\;=\;R\;[\dfrac{1}{2^2}\;-\;\dfrac{1}{n^2} ][/tex]

[tex]\lambda[/tex] = Wavelength = 410 nm = 410 [tex]\rm \times\;10^-^7[/tex] cm

R = Rydbreg constant = 109678/cm

[tex]\rm \dfrac{1}{410\;\times\;10^-^7}\;=\;109678\;[\dfrac{1}{2^2}\;-\;\dfrac{1}{n^2} ][/tex]

[tex]\rm \dfrac{1}{410\;\times\;10^-^7\;\times\;109678}\;=\;\;[\dfrac{1}{2^2}\;-\;\dfrac{1}{n^2} ][/tex]

[tex]\rm 0.222\;=\;\;[\dfrac{1}{2^2}\;-\;\dfrac{1}{n^2} ][/tex]

[tex]\rm 0.222\;=\;\;[\dfrac{1}{4}\;-\;\dfrac{1}{n^2} ][/tex]

[tex]\rm 0.222\;-\;\dfrac{1}{4}\;=\;\dfrac{1}{n^2}[/tex]

[tex]\rm n^2\;=\;36.2[/tex]

n = 6

The value of n for the Hydrogen transition in the Balmer series with the wavelength 410 nm has been 6.

For information about the Balmer series, refer to the link:

https://brainly.com/question/5295294

Answer:

Ionic solids

Explanation: Ionic solids—Made up of positive and negative ions and held together by electrostatic attractions. They're characterized by very high melting points and brittleness and are poor conductors in the solid state. An example of an ionic solid is table salt, NaCl.

Answer:

Ionic solids

Explanation:

Answer:

Democritus

Explanation:

Answer:

Democritus of Abdera

Explanation:

11.02g

Explanation:

mole ratio between H2SO4 and water is 1:2

mole of H2SO4 is 0.306

then the mole of water is 0.612

finally the mole of water is multiplied by 18, the molar mass to get 11.02 g of water

Answer:

Mass percent of silicon = 46.75% (Approx)

Explanation:

Given:

Mass of silicon = 0.389 g

Mass of silicon dioxide = 0.832 g

Find:

Mass percent of silicon

Computation:

Mass percent of silicon = Mass of silicon / Mass of silicon dioxide

Mass percent of silicon = [0.389 g / 0.832 g]100

Mass percent of silicon = 46.75% (Approx)

Answer:65

Explanation:

22.7 liters

The molar volume of an ideal gas depends on the temperature and pressure. One mole of any ideal gas occupies 22.7 liters at 0 0C and 1 bar (STP).

Hope this helped

Answer:

as the charge of the ions increases, the lattice energy increases. as the size of the ions increases, the lattice energy decreases.

For a given arrangement of ions, the lattice energy increases as ionic radius decreases and as ionic charge increases.

An atom or molecule is said to be an ion if one or more of whose valence electrons have been acquired or lost, providing it a net negative or positive electrical charge.

Faraday knew that metals disintegrated together into solution place at a single electrode and that a second metal was placed first from solution at the opposite electrode, as such matter had to be trying to move underneath the impact of an electrical current even though he was unable to identify the particles trying to move between the electrodes.  For a given arrangement of ions, the lattice energy increases as ionic radius decreases and as ionic charge increases.

Therefore, for a given arrangement of ions, the lattice energy increases as ionic radius decreases and as ionic charge increases.

To learn more about ion, here:

https://brainly.com/question/13692734

#SPJ6

Answer:

Molarity of HCl solution = 0.25 M

Explanation:

Given data:

Volume of NaOH= V₁ = 25.0 mL (25/1000 = 0.025 L)

Molarity of NaOH solution=M₁ = 0.185 M

Volume of HCl solution = V₂ = 0.0200 L

Molarity of HCl solution =  M₂= ?

Solution:

M₁V₁   =  M₂V₂

0.185 M ×0.025 L =  M₂ × 0.0200 L

M₂  = 0.185 M ×0.025 L / 0.0200 L

M₂  = 0.005M.L /0.0200 L

M₂  =  0.25 M

The heat (kJ) released to the surroundings : -70.56 kJ

Reaction

CH₄(g) + 3Cl₂(g) → CHCl₃(l) + 3HCl(g) ΔH°=-336 kJ

For 3 mol HCl formed ⇒ ΔH°=-336 kJ

23.0 g of HCl :

[tex]\tt \dfrac{23}{36.5}=0.63[/tex]

Heat released for 0.63 mol HCl :

[tex]\tt \dfrac{0.63}{3}\times -336=-70.56~kJ[/tex]

The heat (kJ) released to the surroundings at the given equation is 70.7KJ.

We know that

[tex]Moles\ or\ HCl\ formed = mass \div molar\ mass\\\\= 23.0\div 36.46[/tex]

= 0.631 mole

Since energy should be related at the time when 3 moles of HCI should be generated = 336 K

Now energy released is  

[tex]= (336\div 3)\times 0.631[/tex]

= 70.65 kJ

Hence we can conclude that heat released to the surrounding is 70.7 kJ.

Learn more:  brainly.com/question/17127206

Answer:

your answer would be false.

Explanation:

prevailing winds blow east-west rather than north-south.

Answer:

Bonding Order = number of bonding electrons – number of antibonding electrons/2.

So for CO2, there is a total of 16 electrons, 8 of which are antibonding electrons.

So 16 – 8 = 8; divided by 2 = 4. So, 4 is the bonding order of CO2. The molecular structure of CO2 looks like this:

..~-~~..

O=C=O

..~-~~..

Answer:

Option B. Heptane

Explanation:

To obtain the parent name of the above compound, all we need to do is to locate the longest continuous carbon chain.

The longest continuous carbon chain of the above compound is 7.

Next, we shall also consider the chain if there is any double or triple bond.

From the diagram given above, no double or triple bond is present.

Finally, the parent name of the compound is heptane since the longest continuous carbon chain is 7 and no double or triple bond is present in the compound.

Answer:

neutral/no charge

Explanation:

Answer:

6

Explanation:

Answer:

80.2L

Explanation:

Given parameters:

Initial volume of oxygen = 47.2L

Initial pressure of oxygen = 1240torr

Final pressure  = 730torr

Unknown:

Final volume  = ?

Solution:

To solve this problem, we apply the Boyle's law proposed by Robert Boyle. It states that "the volume of a fixed mass of a gas varies inversely as the pressure changes if the temperature is constant".

Mathematically;

             P₁V₁ = P₂V₂

P and V are pressure and volume

1 and 2 are initial and final states

              1240 x 47.2  = 730 x V₂  

                  V₂  = 80.2L

Answer:

25 valence electrons.

Explanation:

Hello!

In this case, based on the attached picture, you can see that the chlorate ion has three oxygen atoms and one chlorine ion, whereas you can see there is a coordination bond (two arrows) from chlorine to oxygen which means that oxygen receives two electrons from chlorine in order to complete its octet and to allow chlorine to not exceed the octet. It means there is another oxygen completes its octet via the Cl=O bond and the the last oxygen is negatively charged because it is missing one bond to attain its octet even thought chlorine actually completes its octet.

Therefore, this ion has seven valence electrons from chlorine and 18 valence electrons from the three oxygen atoms, which means it has 25 valence electrons overall.

Best regards!

Answer:

simple sugar

Explanation:

The northern cardinal is a bird of the Cardinalis genus. It s also called as the red bird. It is mostly found in Canada, United states and parts of Texas and Mexico. The Cardinal birds do not migrate in winter and spends the winter season in New York. These birds are fed with sunflower seeds by the people during the winter season. The starches in the seeds of the sunflower helps these birds to survive in the winter. The glucose or the simple sugar found in the starches are the building blocks of the starches.

Answer:

Types Descriptions

Flows occur when soil or rock acts like a liquid

Slumps a slice of material that moves as one piece along a curved surface

Landslides made up of unconsolidated rock; includes rockslides and avalanches

Creeps material that moves slowly down gently sloping areas

Explanation:

Googled it.

Water can affect mass movements by reducing the friction along a sliding surface and can also allow particles to slide past each other easily.

Mass movement refers to the transfer of rocks and solid downslope as a result of gravity. Mass movement is the relocation of surface material such as solid or rock from a point along a slope to a position that's further down the slope.

It should be noted that water triggers mass movement. This is done as water fills the pores that are in the sediments, this then allows the particles to slide past each other easily.

Read related link on:

https://brainly.com/question/15587509

Answer:

yes

Explanation:

because they have similar chemical properties

Answer:

Yes

Explanation:

yes, this is in every chemical reaction (except nuclear reaction) and Is known as "law of conservation of mass"

don't forget to mark brainliest

Answer:

Hail pallets forms inside of cumulonimbus clouds

Explanation:

Answer: cumulonimbus hope it helps pls stay safe

Answer:2

Explanation:

He