what is the electron configuration for C4- ?

The charge balance equation for an aqueous solution of H2CO3 that ionizes to HCO3- and CO32- is 1H+ + 1H+ = 1HCO3- + 1CO32-. This equation ensures that the positive charges equal the negative charges, maintaining charge balance in the solution.

The charge balance equation for an aqueous solution of H2CO3 (carbonic acid) that ionizes to HCO3- (bicarbonate ion) and CO32- (carbonate ion) can be completed as follows:

1. Write the chemical equation for the ionization of H2CO3:
H2CO3 ⇌ HCO3- + H+
HCO3- ⇌ CO32- + H+

2. Identify the charges of each ion:
H2CO3 has no charge.
HCO3- has a charge of -1.
CO32- has a charge of -2.
H+ has a charge of +1.

3. Determine the number of ions produced by each species:
H2CO3 dissociates to produce one HCO3- ion and one H+ ion.
HCO3- dissociates to produce one CO32- ion and one H+ ion.

4. Write the charge balance equation:
The sum of the positive charges (H+ ions) should equal the sum of the negative charges (HCO3- and CO32- ions).

On the left side of the equation:
1 H+ ion from the ionization of H2CO3
1 H+ ion from the ionization of HCO3-

On the right side of the equation:
1 HCO3- ion
1 CO32- ion

Therefore, the charge balance equation is:
1H+ + 1H+ = 1HCO3- + 1CO32-

Learn more about balance equation here:-

https://brainly.com/question/7181548

#SPJ11

Answer:

Chloroform has a boiling point of 61.15 degrees Celsius and a vapor pressure of 9.5 kPa at 20 degrees Celsius. Glycerol, on the other hand, has a boiling point of 290 degrees Celsius and a vapor pressure of 0.0002 kPa at 20 degrees Celsius. Therefore, chloroform has a much lower boiling point and a much higher vapor pressure than glycerol. This means that chloroform is more volatile and evaporates more easily than glycerol.

Explanation:

Chloroform has a boiling point of 61.15 degrees Celsius and a vapor pressure of 9.5 kPa at 20 degrees Celsius. Glycerol, on the other hand, has a boiling point of 290 degrees Celsius and a vapor pressure of 0.0002 kPa at 20 degrees Celsius. Therefore, chloroform has a much lower boiling point and a much higher vapor pressure than glycerol. This means that chloroform is more volatile and evaporates more easily than glycerol.

Answer:

Its B :)

Hope this helps

Image B will shows the butter particles before and after thermal energy will be transferred to the solid butter by heating. So, the correct option is B.

The energy present in a system that determines its temperature is referred to as thermal energy. Thermal energy flows as heat. Thermodynamics is a whole field of physics that studies how heat is transmitted across various systems and how work is performed in the process.

The butter particles in Picture B are shown both before and after the solid butter has been heated to transmit thermal energy to it. This image shows a solid butter particle with tightly packed molecules, however when the butter is heated, it melts into a liquid form with loosely packed molecules.

Thus, the correct option is B.

Learn more about Thermal energy, here:

https://brainly.com/question/11278589

#SPJ3

Answer:

Explanation:

To solve this problem, we can use the ideal gas law:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature.

At STP (standard temperature and pressure), the temperature is 0°C or 273.15 K, and the pressure is 1 atm or 101.325 kPa.

We can use the ideal gas law to find the number of moles of chlorine gas in the sample:

n = PV/RT

where P is the pressure, V is the volume, R is the gas constant, and T is the temperature in Kelvin.

First, we need to convert the given temperature of 25.2°C to Kelvin:

T = 25.2°C + 273.15 = 298.35 K

Now we can calculate the number of moles of chlorine gas in the sample:

n = (100.8 kPa)(353.2 mL)/(8.314 J/K/mol)(298.35 K)

n = 0.0158 mol

Next, we can use the number of moles and the ideal gas law to find the volume at STP:

V = nRT/P

V = (0.0158 mol)(8.314 J/K/mol)(273.15 K)/(101.325 kPa)

V = 0.364 L or 364 mL

Therefore, the volume of the chlorine gas at STP would be 364 mL.

Answer:

0.468 m

Explanation:

From the question given above, the following data were obtained:

Mass of napthalalene (C₁₀H₈) = 30 g

Mass of toulene = 500 g

Molality =?

Next, we shall determine the number of mole in 30 g of C₁₀H₈. This can be obtained as follow:

Mass of C₁₀H₈ = 30 g

Molar mass of C₁₀H₈ = (12×10) + (8×1)

= 120 + 8

= 128 g/mol

Mole of C₁₀H₈ =?

Mole = mass / molar mass

Mole of C₁₀H₈ = 30 / 128

Mole of C₁₀H₈ = 0.234 mole

Next, we shall convert 500.0 g of toulene to Kg. This can be obtained as follow:

1000 g = 1 Kg

Therefore,

500 g = 500 g × 1 Kg / 1000 g

500 g = 0.5 Kg

Finally, we shall determine the molality of the solution. This can be obtained as follow:

Mole of solute (C₁₀H₈) = 0.234 mole

Mass of solvent (toulene) = 0.5 Kg

Molality =?

Molality = mole of solute / Kg of solvent

Molality = 0.234 / 0.5

Molality = 0.468 m

Answer: helium(He)

Explanation: Helium has only 2 electrons in the outermost energy level, but all of the other elements in its column have eight.

Answer:

pH = 10.15

Explanation:

NaOH is a strong base so it dissolves completely.

Calculate your [OH-] first by dividing the moles of OH- by the volume.

0.0015 mol OH- / 11 L = 0.00014

Then, calculate the pOH:

pOH = -log[OH-] = -log(0.00014) = 3.85

pOH + pH = 14, so pH = 14 - pOH = 14 - 3.85 = 10.15

Answer:

In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not. However in a chemical change, the kind of matter changes and at least one new substance with new properties is formed.

Explanation:

Lactose is a disaccharide carbohydrate molecule, composed of two monosaccharide units, glucose and galactose, linked by a β(1→4) glycosidic bond. It is commonly found in dairy products and serves as an energy source for organisms capable of digesting it. In order to be broken down and utilized, lactose must be hydrolyzed by the enzyme lactase into its individual monosaccharides. Lactose intolerance occurs when individuals lack sufficient lactase activity, leading to difficulty digesting lactose and subsequent gastrointestinal symptoms.

Lactose is complete molecule classified as a disaccharide, consisting of two simple sugar units, glucose and galactose, joined together by a beta-glycosidic bond. It is commonly found in milk and dairy products and is responsible for the sweet taste of milk. Lactose is an important source of energy and nutrition for infants and young animals. However, some people are unable to digest lactose due to a deficiency of the enzyme lactase, which breaks down lactose into its component sugars. This can lead to lactose intolerance, which can cause digestive symptoms such as bloating, gas, and diarrhea.

To know more about glycosidic bond visit:

https://brainly.com/question/2161013

#SPJ11

For the sample of n sludge specimens is selected and the conclusion and the pH of each one is determined.

A) The null hypothesis is rejected. Sufficient evidence is present for the fact that the true average pH is less than 7.0.

B) The null hypothesis is rejected. Sufficient evidence is present for the fact that the true average pH is less than 7.0.

C) The null hypothesis is rejected. Sufficient evidence is present for the fact that the true average pH is less than 7.0.

D) The null hypothesis is rejected. Sufficient evidence is present for the fact that the true average pH is less than 7.0.

E) The null hypothesis is rejected. Sufficient evidence is present for the fact that the true average pH is less than 7.0.

The null hypothesis in inferential statistics is that two possibilities are always equal. It shows that the underlying assumption is that the observed difference is just the result of chance. It is possible to estimate the probability of the null hypothesis is correct using statistical tests.

Learn more about pH from the link given below.

https://brainly.com/question/23136085

#SPJ4

The reason I have to think about the polarity of the different ingredients in my salad dressing in order for it to turn out well is simply because so that the soluble ingredients can dissolve completely and have a nice taste.

Polarity can simply be defined as a state of an atom or a molecule inherent in a body that exhibits opposite properties or powers in opposite parts or directions.

So therefore, the reason I have to think about the polarity of the different ingredients in my salad dressing in order for it to turn out well is simply because so that the soluble ingredients can dissolve completely and have a nice taste.

Learn more about polarity:

https://brainly.com/question/2615067

#SPJ1

Answer:

Explanation:

Decomposition reaction, also known as analysis or dissociation, is a type of chemical reaction in which a compound breaks down into simpler substances or elements. In this reaction, a single reactant undergoes a chemical change and produces two or more products.

The decomposition reaction can be represented by the general equation:

AB → A + B

Where AB is the reactant, and A and B are the products. The reactant AB is usually a compound, and it breaks down into its constituent elements or simpler compounds.

There are different types of decomposition reactions, including:

Thermal decomposition: It occurs when a compound is heated, resulting in its decomposition into simpler substances. For example, the thermal decomposition of calcium carbonate (CaCO3) produces calcium oxide (CaO) and carbon dioxide (CO2):

CaCO3 → CaO + CO2

Electrolytic decomposition: It takes place when an electric current is passed through an electrolyte, causing it to break down into its component ions. For instance, the electrolysis of water (H2O) leads to the decomposition into hydrogen gas (H2) and oxygen gas (O2):

2H2O → 2H2 + O2

Photochemical decomposition: It occurs when a compound undergoes decomposition due to exposure to light energy. Chlorine gas (Cl2) can decompose into chlorine atoms (Cl) under the influence of light:

Cl2 → 2Cl

These are just a few examples of decomposition reactions. They are important in various chemical processes and are used in industries, laboratory experiments, and natural phenomena. By understanding and controlling decomposition reactions, scientists can gain insights into the behavior of different compounds and develop practical applications in fields such as chemistry, materials science, and environmental science.

Answer:

Explanation:

reaction in which a compound breaks down into simpler substances or elements

Substance C is a solid solute because the solubility of a solid increases with increasing temperature. Therefore, option B is correct.

Solubility refers to the ability of a solute to dissolve in a solvent and form a homogeneous mixture called a solution. It is a measure of how much of a solute can dissolve in a given amount of solvent under specific conditions, such as temperature and pressure.

Solubility is typically expressed as the maximum amount of solute that can dissolve in a specified amount of solvent. The solubility of a substance is influenced by various factors, including the nature of the solute and solvent, temperature, pressure, and the presence of other substances.

Learn more about solubility, here:

https://brainly.com/question/31493083

#SPJ1

Answer: it's substance A hope it helps.!

Answer: Matter

Biosphere

Explanation:

The substance that occupies space and mass is called matter, and the biosphere is the part of the earth that includes life. Thus, the correct options are 1. c and 2. b.

A matter has been defined as a substance that is made of atoms and has a mass that results in it occupying some space. The matter can be in the form of liquid, solids, or gas. The matter is present everywhere and can be interconnected. Thus, 1. c is correct.

The biosphere is defined as the sphere that combinedly comprises the hydrosphere, lithosphere, and atmosphere and is the part where life exists on the earth. It includes the elements air, water, land, etc., and all the ecosystems that range from oceans to mountains. Thus, 2. b is correct.

Therefore, options 1. c. matter and 2. b. the biosphere is correct.

Learn more about the matter, here:

https://brainly.com/question/9402776

#SPJ2

Your question is incomplete, but most probably your full question was,

1. Anything that has mass and takes up space

2. The part of the earth in which life exists including land water and air

The steps involved in the manufacture of sulphuric acid by contact process:

(1) Sulphur (or iron pyrites) are burnt in air to form sulphur dioxide.

  S+O2→SO24FeS2+11O2→2Fe2O3+8SO2

(2) Catalytic oxidation of sulphur dioxide to sulphur trioxide.

  2SO2+O2V2O52SO3ΔrHo=−196.6kJ

The reaction is reversible and exothermic.

(3) Sulphur trioxide is dissolved in 98% sulphuric acid to form oleum (fuming sulphuric acid). 

  SO3+H2SO4→H2S2O7

(4) Oleum is diluted with water to form sulphuric acid of desired concentration.

    H2S2O7+H2O→2H2SO4

            and

Manufacture of H2SO4 by contact process involves three steps:

1. Burning of sulphur in air to generate SO2.

2. Conversion of SO2 to SO3 by oxidation with air in the presence of 

Answer:

Cell expansion and an increase in turgor pressure is due to inward diffusion of water into the cell, and turgor pressure increases due to the increasing volume of vacuolar sap. A growing root cell's turgor pressure can be up to 0.6 MPa, which is over three times that of a car tire.

Explanation...read that and you will have a sucess

The maximum number of electrons that can occupy the third principal energy level is 18. This can be determined by using the formula 2n^2, where n represents the principal energy level. For the third energy level (n = 3), the maximum number of electrons is 2(3)^2 = 18.

The principal quantum number (n) is a fundamental concept in quantum mechanics that describes the energy level and overall size of an electron orbital in an atom. It determines the distance of an electron from the nucleus and provides information about the shell in which the electron resides.

The principal quantum number defines the energy level of an electron in an atom. Higher values of n correspond to higher energy levels, with the first energy level assigned to n = 1, the second to n = 2, and so on.

To know more about electrons visit:

brainly.com/question/31967154

#SPJ11

Answer:

parents

Explanation:

You got all your genes from your parents. For each pair of their chromosomes, you get one chromosome from your mother and one from your father

The gas that could be identified as gas B is helium(He).

We know that the rate of diffusion of a gas is inversely proportional to the square root of the molar mass of the gas. If we then have two masses of gas then we can write;

R1/R2 = √M2/M1

Given that;

R1 = rate of diffusion of gas 1

R2 = rate of diffusion of gas 2

M2 = molar mass of gas 2

M1 = molar mass of gas 1

We are told that Gas 2 diffuses 3.16 times faster than gas 1. We now know that;

1/3.16 = √M2/40

(1/3.16)^2 = M2/40

1/9.99= M2/40

40 = 9.99 M2

M2 = 40/9.99

M2 = 4

Learn more about diffusion:https://brainly.com/question/24746577

#SPJ1

Answer:

Muscovite is the mineral

Answer:

Để trung hoà 50 ml hỗn hợp X gồm HCl và H2SO4 cần dùng 20 ml dung dịch NaOH 0,3M. Cô cạn dung dịch sau khi trung hoà thu được 0,381 gam muối khan. a) Xác định nồng độ mol của các axit trong X. b) Tính pH của dung dịch X.

The molecular solids can not expand to conduct electricity because there are small distances between the atoms and also their bonds are very strong, both characteristics make the movement of particles very small (they only vibrate in place), and that also causes the electrons to be attracted to the atoms with greater force and therefore they do not move easily.

Answer:

The chemical name is C16H11N2NaO4S

Explanation:

According to molar concentration, 0.7455 g of  KCl are needed to make 0.1 M KCl solution.

Molar concentration is defined as a measure by which concentration of chemical substances present in a solution are determined. It is defined in particular reference to solute concentration in a solution . Most commonly used unit for molar concentration is moles/liter.

Molar concentration is calculated by the formula, molar concentration=mass/ molar mass ×1/volume of solution in liters.

In terms of moles, it's formula is given as molar concentration= number of moles /volume of solution in liters.

Substituting values in 1st formula mentioned,mass=molarity×molar mass×volume in liters=0.1×74.55×0.1=0.7455 g.

Thus,0.7455 g of  KCl are needed to make 0.1 M KCl solution.

Learn more about molar concentration,here:

https://brainly.com/question/21841645

#SPJ1

From the options provided, carbon tetrachloride (Kb = 5.03 degree C/m) has the highest Kb value. Therefore, carbon tetrachloride would show the greatest boiling point elevation when used to make a 0.10 m nonelectrolyte solution.

To determine the solvent that would show the greatest boiling point elevation, we need to compare the values of the boiling point elevation constant (Kb) for each solvent.

The boiling point elevation is directly proportional to the molality of the solute and the boiling point elevation constant of the solvent.

Among the given options, the solvent with the highest Kb value will result in the greatest boiling point elevation.

Comparing the Kb values:

a. benzene, Kb = 2.53 degree C/m

b. diethyl ether, Kb = 2.02 degree C/m

c. carbon tetrachloride, Kb = 5.03 degree C/m

d. acetic acid, Kb = 3.07 degree C/m

e. water, Kb = 0.512 degree C/m

Know more about , carbon tetrachloride here:

https://brainly.com/question/30459999

#SPJ11

The number of mole present in the aluminum foil, given that the foil has a thickness of 1.0 mm is 0.7 mole

We'll begin by obtaining the mass of the aluminum foil. Details below:

Density = mass / volume

Cross multiply

Mass = Density × Volume

Mass of aluminum = 2.702 × 7

Mass of aluminum = 18.914 g

Finally, we shall determine the number of mole present. Details below:

Mole = mass / molar mass

Number of mole of aluminum = 18.914 / 27

Number of mole of aluminum = 0.7 mole

Thus, the number of mole is 0.7 mole

Learn more about mole:

https://brainly.com/question/13314627

#SPJ1

Answer:

When ions are made of a single atom, such as Li+1, they are called monatomic ions

Explanation:

Any atom or molecule with a net charge, either positive or negative, is known as an ion. An ion consisting of a single atom is a monoatomic ion; an ion consisting of two or more atoms is referred to as a polyatomic ion.

Answer:

\(\sf Correct \: answer \: is \: option \: C \rightarrow\: 5\: grams\)

Explanation:

Given:

Half life of cesium : 2 years

Amount of substance initial (N0)= 10 grams

To find:

Amount of substance remaining after 2 years(Nt) = ?

Solution:

Half life: The time interval in which the amount of substance at initial reduces to exact half of it, this reduction is seen in radioactive element.

Given by the formula,

\(N_t = N_0 {( \frac{1}{2} )}^{ \frac{t}{ {t_{ \frac{1}{2}} } } } \)

Where Nt is the amount of substance remaining after time t,

N0 is the amount of substance at time t = 0,

t is the time at which we have to find out how much substance disintegrated from t = 0 to t = t

& t_1/2 is the half life corresponding radioactive sample.

Now the question directly asks for the amount of substance remaining at half life and the initial amount is given, so we can directly half the initial amount, and the final answer would be

\( \sf \frac{10}{2} = {\cancel\frac{10}{2}} \: ^{5} = 5 \: grams\)

let's verify the above answer by calculating it with formula method, substituting the corresponding given data in above formula.

\(N_t = 10 {( \frac{1}{2} )}^ \frac{2 \: years}{2 \: years} \\ \small \sf \:2 \: years \: and \: 2 \: years \: in \: power \: \\\sf \small \: has \: been \: cancelled \: out \\ \: N_t = 10 {( \frac{1}{2} )}^1 \\ N_t = \frac{10}{2} \\ \: \displaystyle \boxed{N_t = 5 \: grams}\)

\( \sf \small \: Answer \rightarrow 5 \: grams \: of \: sample \: would \: remain.\)

Thanks for joining brainly community!

First of all, Z is unknown. I hope it is a mistake.

        Now, it is given that the element X has nineteen electrons. This proves that X is actually Potassium.

        As per the periodic table, both Potassium and Lithium belongs to group 1 as their valency is 1 because of the presence of only one electron in the outermost shell of electrons i.e., they lose an electron during a chemical reaction to form a stable compound. Furthermore, both are metallic.

        Magnesium belongs to group 2 and hence its valency is two, which is different from potassium though it is metallic. Similiarly, bromine belongs to group 17 and gains one electron during a reaction in contrast to potassium.

( No internal links available for reference. For clarification, check the periodic table).