Write the formula of each compound, and determine its molecular (formula) mass:
(c) potassium bicarbonate.

The chemical equation that would generate the following reaction quotient expression qc=[SO₃]²[O₂][SO₂]² is: 2SO₂ + O₂ ⇌ 2SO₃

where the SO₃, O₂, and SO₂ concentrations are squared and multiplied to obtain the reaction quotient expression qc.

Sulphur trioxide (SO₃) is formed from sulphur dioxide (SO₂) and oxygen (O₂) gases in the mechanism shown above. With two moles of SO₂ reacting with one mole of O₂ to generate two moles of SO₃, the equation is balanced. At any point during the chemical reaction, the reaction quotient expression q_c is the ratio of product concentrations to reactant concentrations, each raised to their respective stoichiometric coefficients. In this scenario, q_c indicates the concentration of SO₃ squared multiplied by the concentrations of O₂ and SO₂ squared, which are the equation's products and reactants.

learn more about chemical reaction here:

https://brainly.com/question/29762834

#SPJ4

Answer:

the correct answer is option A. decrease

The element x is chromium which  forms a crystal with a body centered cubic unit cell.

A central atom is surrounded by eight atoms at each of the eight corners in the BCC structure. Along the cube diagonals, the atoms in the center and corners make contact. Each BCC unit cell contains two atoms: one complete atom in the center and one shared by eight unit cells in each corner.

use formula

d= \(\frac{M*Z}{V*N}\)

D = Density

M =  molecular mass

Z = 2

N = Avogadro number

to know more about unit cell , visit ;

brainly.com/question/29537966

#SPJ1

Before the reaction, copper (ll) sulphate appears blue, particularly sky blue, and the aluminium foil is silver in colour.

When we first add aluminum metal to the copper sulphate solution, we observe that the reaction is quite slow, but when chloride ion or simply NaCl is taken as a catalyst, the reaction moves along very quickly (chloride behaves as a positive catalyst).

The copper sulfate's blue colour diminishes during the process, and copper is then deposited on aluminium metal. The solution turns colourless, and copper with a reddish hue is then deposited on aluminium.

After being cured, solid copper acquires a reddish brown colour.

To know more about  catalyst click on below link:

https://brainly.com/question/12507566#

#SPJ4

Answer:

b. a meadow replacing a pond in it's flood plain

Explanation:

I'ts a secondary succession.

Answer:

jupiter

Explanation:

mercury, venus, earth, mars, jupiter, saturn, uranus, neptune,

Answer:

the speed and wavelength of light are reduced , although the frequency remains unaltered.

The speed of light on the vacuum is equal to 3 ×10⁸m/s. The speed of light changes as it enters a different medium due to refraction.

Refraction of light can be described as the redirection of a light ray traveling from one optical medium to another optical medium. The redirection is caused by a change in speed with a change in the medium. Refraction of light can be described as an observed phenomenon, but sound waves and water also experience refraction.

Refraction follows Snell's law, which can be described as the ratio of the sines of the angle of incidence and angle of refraction should be equal to the ratio of the refractive indices of the two different mediums.

When light travels from a less dense to a denser medium, then the refracted ray bends towards the normal. The angle of incidence of the light ray will be greater than the angle of refraction.

If a light ray travels from a denser to a rarer medium, then it will bend away from the normal and the angle of incidence will be less than the angle of refraction.

Learn more about refraction, here:

brainly.com/question/14760207

#SPJ2

The human eye can only see visible light, but light comes in many other "colors"—radio, infrared, ultraviolet, X-ray, and gamma-ray—that are invisible to the eye.

There is infrared light, which, while too red for humans to see, is all around us and even emitted from our bodies. Warm-blooded animals, including humans, radiate infrared light.

There is also X-ray light, which is too blue for humans to see. X-rays are another common light source that many of us have encountered at a doctor's office. They can penetrate skin and muscles, allowing doctors to look at our bones. What you might not know is that the sun also emits X-rays. Lucky for us, the Earth's atmosphere blocks X-ray light.

Answer:

The new volume of the sample is halved.

Explanation:

Data obtained from the question include the following:

Initial volume (V1) = V

Initial temperature (T1) = T

Initial pressure (P1) = P

Final pressure (P2) = quadrupled = 4P

Final temperature (T2) = doubled = 2T

Final volume (V2) =?

Thus, we can obtain the new volume of the same by using the combined gas equation as shown below:

P1V1 /T1 = P2V2 /T2

P × V/T = 4P × V2/2T

Cross multiply

T × 4P × V2 = P × V × 2T

Divide both side by T × 4P

V2 = (P × V × 2T) / (T × 4P)

V2 = V/2

V2 = ½V

Therefore, the new volume of the sample is halved .

Answer:

2

Explanation:

...

Answer:

orbital is the answer

I took the test

Answer:

d - orbital

Explanation:

The d-orbital can modelled by a peanut shape.

A peanut shape closely resembles the shape of a double dumb-bell shape. The double dumb-bell shape is like that of a peanut.

Therefore, since a peanut is like a double dumb-bell, it clearly models the d-orbital.

Answer:

I think its learned behavior

Explanation:

because animals don't learn how to migrate, they just know already.

Answer:

we cant see the picture

Explanation:

The number of coulombs of charge transferred is 32220 C

When you perform an electrochemical reaction in which 0.800 mol of Cu are reduced to solid Cu, the number of coulombs of charge transferred can be calculated using Faraday's constant. The answer is 32220 C (coulombs).Explanation:

Given: The amount of Cu reduced to solid Cu = 0.800 mol

The amount of charge transferred can be calculated using Faraday's constant.

Faraday's constant = 96500 C mol^-1

Amount of charge transferred = n x FWhere,

n = Number of moles of electrons transferred.

F = Faraday's constant.Number of moles of electrons transferred

= 2 [Since the Cu ion gains 2 electrons to form Cu]Amount of charge transferred

= 2 x 96500 C mol^-1

= 193000 C [Or 1 F = 96500 C]Amount of charge transferred when 0.800 mol of Cu is reduced to solid Cu

= 193000 x 0.800 = 154400 C or 1.54 x 10^5 C (Approximately).

To learn more about : charge

https://brainly.com/question/18102056

#SPJ11

The gas's new volume will be 0.542 L. 500 cc of 298.15 °K gas are contained in a test balloon. if I use a laser to raise the balloon's gas temperature to 323.15 °K.

Because the gas's kinetic energy has increased. Any three-dimensional solid's volume is just the amount of space it takes up. A cube, cuboid, cone, cylinder, or sphere can be one of these solids. Volumes vary depending on the shape. We have looked at the different solids and forms in 3D geometry.

(2)*Total Kinetic Energy per Mole/Pressure equals the volume of the gas.

Volume of Gas = (1/2) * 0.361

Gas volume is 0.542 litres.

Learn more about balloon's gas  here

https://brainly.com/question/26770553

#SPJ4

Answer:

1242

Explanation:

Ethanol would be a suitable solvent in which to perform the proton transfer with NH3. This is because ethanol is a polar solvent with a high dielectric constant, which means it can dissolve both polar and nonpolar compounds.

In this case, the NH3 molecule is polar, and it would dissolve readily in ethanol.Additionally, ethanol has a low boiling point, making it easy to remove after the reaction is complete. NH3 is a weak base that can act as a proton acceptor. When placed in a suitable solvent such as ethanol, it can interact with proton donors to form a new compound. Ethanol is a suitable solvent for this reaction because it has the ability to dissolve both the reactants and products.

It also has a high dielectric constant, which means it can stabilize the charged species formed during the reaction. Additionally, ethanol has a low boiling point, which means it can be easily removed from the reaction mixture after the reaction is complete. Therefore, ethanol would be a suitable solvent in which to perform the proton transfer reaction with NH3.

To know more about ethanol refer to

https://brainly.com/question/25002448

#SPJ11

Answer:

Metals react by losing electrons.  So, there is high reactivity due to lower attraction. Non-metals react by gaining electrons. So, there is high reactivity due to higher attraction.

Explanation:

Metals react by losing electrons. So, there is high reactivity due to lower attraction. Non-metals react by gaining electrons. So, there is high reactivity due to higher attraction. Also, electrons lost by metals transfer to the nonmetals. It is easier for the metals to lose their valance electrons and form cations rather than gaining electrons.

Metals do not hold on to or attract electrons while nonmetals hold on to or attract electrons.

In the periodic table, metals are found towards the left hand side of the table while nonmetals are found towards the right hand side of the table.

Electron affinity of elements increase from left to right across the period. Electron affinity refers to the ability of elements to attract or hold electrons. This ability increase steadily across the period.

Usually, the electron affinity values of nonmetals are very high showing that they easily hold on to and attract electrons while the electron affinity values of metals is very low showing that they do not easily hold on to and attract electrons.

Learn more: https://brainly.com/question/3964366

The binding energy per nucleon for silver-109 is 1.285 × 10⁻¹¹ kJ/mol.

In order to calculate the binding energy per nucleon, which is expressed in units of energy per mole of nuclei (kJ/mol), we need to use the following equation:

BE/A = (Δmc²)/A

where BE/A is the binding energy per nucleon, Δm is the mass defect (the difference between the actual mass of the nucleus and the sum of the masses of its constituent nucleons), c is the speed of light, and A is the mass number (the total number of protons and neutrons) of the nucleus.

The atomic mass of silver-109 is 108.90585 g/mol, so its mass number is 109. We also have the required masses of its constituent nucleons, which are 47 for protons and 62 for neutrons.

Using the atomic masses of silver-109 and its constituent nucleons, we can calculate the mass defect as follows:

Δm = (108.90585 g/mol - (47 × 1.007825 g/mol + 62 × 1.008665 g/mol)) = 0.008601 g/mol

where 47 and 62 are the numbers of protons and neutrons in the nucleus, respectively.

Converting the mass defect to energy using Einstein's famous equation E = mc² we get:

ΔE = Δmc² = (0.008601 g/mol) × (299792458 m/s)² = 7.732 × 10⁻⁴ J/mol

Finally, we convert the energy per nucleus to energy per mole of nuclei and then to kilojoules per mole by dividing by the Avogadro constant and multiplying by 10⁻³:

BE/A = ΔE/A × N_A × 10⁻³ = (7.732 × 10⁻⁴ J/mol)/(6.022 × 10²³ mol⁻¹) × 10⁻³ = 1.285 × 10⁻¹¹kJ/mol

Therefore, the binding energy per nucleon for silver-109 is 1.285 × 10⁻¹¹kJ/mol.

To learn more about binding energy here

https://brainly.com/question/32066931

#SPJ4

Answer:

9300 grams = 9.3 kilograms hope it helps

4.33 grams of nitrogen are produced when 7.80 grams of dinitrogen tetrahydride reacts with hydrogen peroxide.

To determine the mass of nitrogen (N2) produced when 7.80 grams of dinitrogen tetrahydride (NaH) reacts with hydrogen peroxide (H2O2), we need to calculate the stoichiometry of the balanced chemical equation and use the molar masses of the compounds involved.

The balanced chemical equation is:

2NaH + 2H2O2 → N2 + 4H2O

From the equation, we can see that 2 moles of NaH react with 2 moles of H2O2 to produce 1 mole of N2. To find the molar mass of N2, we add the atomic masses of two nitrogen atoms:

Molar mass of N2 = 2 × Atomic mass of nitrogen = 2 × 14.01 g/mol = 28.02 g/mol

Now, let's calculate the number of moles of NaH:

Moles of NaH = Mass of NaH / Molar mass of NaH

Moles of NaH = 7.80 g / (22.99 g/mol + 1.01 g/mol) ≈ 0.3088 mol

According to the balanced equation, the molar ratio of NaH to N2 is 2:1. Therefore, the moles of N2 produced will be half the moles of NaH used:

Moles of N2 = 0.3088 mol / 2 ≈ 0.1544 mol

Finally, to find the mass of nitrogen produced, we multiply the moles of N2 by the molar mass of N2:

Mass of N2 = Moles of N2 × Molar mass of N2

Mass of N2 = 0.1544 mol × 28.02 g/mol ≈ 4.33 g

Therefore, approximately 4.33 grams of nitrogen are produced when 7.80 grams of dinitrogen tetrahydride reacts with hydrogen peroxide.

For more question on nitrogen visit;

https://brainly.com/question/1380063

#SPJ8

Answer:  " 145,000 g " .

________________________

Explanation:

________________________

To solve:  Let's use a technique known as "dimensional analysis"

_____________________

\(\frac{287.34 g}{mol}\) * ( 537 mol)  = ? g ;

______________________

Note:  "g" stands for "grams" ;

______________________

The units of "mol" ["mole(s)"] on the "left-hand side of the equation"

                               →  "cancel out" ;  {since: "mol/mol" = 1 "} ;

_________________

And we have:

(287.34 * 537) g ;

________________

Using a calculator, we do the multiplication to get:

________________

  154301.58 g ;  We round this to 3 (three) significant figures;

since:  (287.34 * 537) g ;  the limiting number with the "least number of significant figure" is "537" ; which has 3 (three) significant figures;

_______________

As such:

We have 154301.58 g ;

_______________

We round this to 145,000 g ; since:

"154" are the first 3 (three) significant figures in our value:

 " 154301.58" ;  and the next significant figure, "3" ; is less than "5" ;

If the next significant figure were "0, 1, 2, 3, or 4" ; we  would round down to: 145,000 g; such as in our case.  If the next significant figure were "5, 6, 7, 8, or 9" , we would round up to: 146,000 g .

__________________

The correct answer is:  " 145,000 g ."

The mass of one mole of the new drug is 287.37 g. Then the mass of 537 moles of the drug is its molar mass times the number of moles, that is 154301 g.

Molar mass of a compound is the mass of one mole of the compound. One mole of every compound contains 6.022 × 10²³ molecules. This number is called Avogadro number.

One mole of every elements contains Avogadro number of atoms. Similarly one mole of every compound contains Avogadro number of molecules. The mass of the compound containing these much molecules is called its molar mass.

Given that the molar mass of the drug = 287.34 g/mol

number of moles produced = 537 moles.

mass of 537 moles of drug = 537 mol  × 287.34 g/mol = 154301 g

Therefore, the mass of 537 moles of the drug is 154301 g

Find more on molar mass:

https://brainly.com/question/12127540

#SPJ2

The charge on the ion of cobalt in a compound is indicated by a Roman numeral. The Roman numeral in the name of the compound indicates the charge on the metal ion.

Cobalt is a transition metal that forms ions with various charges. Cobalt ion can be either 2+ or 3+ in the compound. For example, when a cobalt ion has a +2 charge, it will have lost two electrons, and when it has a +3 charge, it will have lost three electrons. The charge on the ion of cobalt in a compound is indicated by a Roman numeral. For example, when cobalt forms a compound with chlorine, it can either form cobalt (II) chloride or cobalt (III) chloride.The use of Roman numerals in the names of compounds involving transition metals is known as the Stock system.

The Roman numeral is placed in parentheses after the name of the metal. For example, the name of the compound formed by cobalt (II) ion and chloride ion is cobalt (II) chloride. The name of the compound formed by cobalt (III) ion and chloride ion is cobalt (III) chloride.

To know more about compound visit:

https://brainly.com/question/14117795

#SPJ11

Answer:

The velocity of the bb when it reaches a height of 203 m can be determined using the laws of projectile motion. Since the bb is moving vertically upwards, its velocity at that height will be zero.

brainlest?

Answer: v = 83.96 m/s

Assuming the acceleration due to gravity is approximately 9.8 m/s^2, we can use the principles of projectile motion and energy conservation.

Using the equation for the vertical displacement of an object in free fall:

Δy = (v₀² - v²) / (2g)

Δy = vertical displacement (203m)

v₀ = initial velocity (105 m/s)

v = final velocity (not known yet)

g = accerlation due to gravity (9.8 m/s^2)

Lets rearrange the equation to solve for the final velocity:

v = v = √(v₀² - 2gΔy)

Substituting the given values:

v = √(105² - 2 * 9.8 * 203)

v ≈ √(11025 - 3979.6)

v ≈ √(7054.4)

v ≈ 83.96 m/s

Therefore, when the BB pellet is at the height of 203m, its velocity will be approximately 83.96 m/s.

Moon reflects the light frim the sun, thats why we are able to see it and it shines in the night. But, we know that Earth revolves around Sun and Moon revolves around Earth. During this revolution, Earth and Moon comes in a position when Earth is in the middle of the Moon and Sun. So, it blocks the light of Sun frim reaching Moon. Hence, we see no reflection and it causes Lunar eclipse.

Answer:

A total lunar eclipse occurs when the moon and the sun are on exact opposite sides of Earth. Although the moon is in Earth's shadow, some sunlight reaches the moon. The sunlight passes through Earth's atmosphere, which causes Earth's atmosphere to filter out most of the blue light.

Explanation:

Answer:

you can tell diorite is an intrusive igneous rock because it has a coarse-grained texture

In the first part of the experiment, you will need to measure and determine the half-cell reduction potential of each metal by pairing it to an inert electrode. We will use platinum as our inert electrode and 0.10 M KNO3 as the inert solution during the experiment. The correct answer is platinum and 0.10 M KNO3.

Half-cell reduction potential is a measurement that represents the ability of a species to undergo reduction. It is defined as the potential difference between the standard hydrogen electrode (SHE) and the reduction half-cell. The potential of a half-cell is measured with reference to the SHE. The reduction half-cell potential is measured using a voltmeter, and the electrodes used are the standard hydrogen electrode (SHE) and the unknown electrode.

The value of the half-cell reduction potential indicates whether a substance is oxidizing or reducing. If the value is negative, the substance is an oxidizing agent, while if the value is positive, the substance is a reducing agent. The magnitude of the value of the half-cell reduction potential represents the strength of the reducing agent.

We will need to measure and determine the half-cell reduction potential of each metal by pairing it to an inert electrode. We will use a platinum (Pt) electrode as our inert electrode and a saturated calomel electrode (SCE) as the reference electrode.

Complete question: This is a reduction potential experiment. In the first part of the experiment, you will need to measure and determine the half-cell reduction potential of each metal by pairing it to an inert electrode. We will use (Select] as our inert electrode and [ Select the inert solution during the experiment. Hint: Read through page 40 in the lab manual.

To know more about half-cell reduction, refer here:

https://brainly.com/question/30763425#

#SPJ11

Both Al3Ti and LiAl fit the general size requirements for substitutional alloys, as they have similar atomic radii. (A,B)

Al3Ti consists of aluminum and titanium atoms, which have atomic radii of 143pm and 147pm respectively, which are fairly close in size.

Similarly, LiAl consists of aluminum and lithium atoms, which have atomic radii of 143pm and 152pm respectively, which are also close in size. Because the atomic radii of both alloys are close, the atoms are able to fit into the lattice structure of the other atoms.

This allows for the atoms to substitute for each other, making for a substitutional alloy.

To know more about atomic radii click on below link:

https://brainly.com/question/14086621#

#SPJ11

Answer:

[A] Plant shoots are positively phototropic and negatively gravitropic. [B] Plant shoots are negatively phototropic and positively gravitropic. [C] Plant shoots are negatively hydrotropic and positively gravitropic. [D] Plant shoots do not display any major tropisms.

Answer:-Gravitropism. It is a type of tropism where plants show some growth in response to gravity. ...

Chemotropism. There are few chemical substances, which are actively responsible for bringing a curvature movement in plant organs. ...

Thigmotropism. ...

Hydrotropism. ...

Thermotropism.                                                                                                                     The below mentioned article will highlight the six types of tropic movements in plants.

The six types are: (1) Thigmotropism (Haptotropism) (2) Phototropism (3) Geotropism (4) Thermotropism (5) Chemotropism and (6) Hydrotropism.                A tropism is a growth movement whose direction is determined by the direction from which the stimulus strikes the plant. There are two forms: Positive = the plant, or a part of it, grows in the direction from which the stimulus originates. and Negative = growth away from the stimulus.                         tropism is a biological phenomenon, indicating growth or turning movement of a biological organism, usually a plant, in response to an environmental stimulus. In tropisms, this response is dependent on the direction of the stimulus (as opposed to nastic movements which are non-directional responses).