You have three elements, A, B, and C, with the following electronegativity values:
Scoi
A = 0.9
B = 3.0
C = 3.5
You react the elements to form the substances AB, AC, and BC. Answer the following questions:
What type of substance is AB? What types of bonds are present? Explain your answer.
What type of substance is AC? What types of bonds are present? Explain your answer.
What type of substance is BC? What types of bonds are present? Explain your answer.
If any of the substances are ionic compounds, which element is the cation and which is the anion?
Explain your answer.

4.56g excess reactant is left over when 17.0 g of potassium hydroxide (KOH) reacts with 20.0 g of iron (III) nitrate (Fe(NO₃)₃)

Reactants are raw materials that react with one another and form products.

Here given balanced reaction is

2KOH + Fe(NO₃)₂ → Fe(OH)₂ + 2KNO₃

Then we have to calculated the masses of KOH and Fe(NO₃)₂ from the balanced reaction

Molar mass of KOH = 39+16+1 = 56g/mol

Mass of KOH = 2×56 = 112g

And the molar mass of Fe(NO₃)₂ = 56+2[14+(16×3)]

= 56+2[14 + 48)]

= 56+2[62]

= 56+124

= 180g/mol

Then from the balanced equation

112g of KOH and 180g/mol of  Fe(NO₃)₂

Then the 17 g of KOH = 17×180/112g

= 27.32 g of Fe(NO₃)₂

Then for 20.0 g of iron (III) nitrate

Therefore Xg of KOH = 112×20/180

Xg of KOH = 12.44g

Thus 12.44g of KOH reacted

Therefore we have determine the leftover mass of the excess reactant

Mass of KOH leftover = ?

Mass of KOH leftover = (Mass of KOH given) – (Mass of KOH that reacted)

Mass of KOH leftover = 17 - 12.44g

Mass of KOH leftover = 4.56g

Know more about potassium hydroxide

https://brainly.com/question/20592733

#SPJ1

The statement which is true for ideal gases at stp conditions is: one mole of an ideal gas has a volume of 22.4L which is also known as standard molar volume.

What are ideal gases?

The term ideal gas refers to a virtual gas composed of molecules that obey some rules.

Ideal gas molecules do not attract or repel each other. The only interactions between ideal gas molecules are elastic collisions when they collide with each other or with the walls of the container.

Ideal gas molecules take up no volume by themselves. Gases occupy volume as their molecules expand into large regions of space, but ideal gas molecules are approximated as point particles that have no volume of their own.

What is the molar form of the ideal gas law?

Ideal gas pressure, P, volume V, and temperature T are related by a simple equation called the ideal gas law. The simplicity of this relationship is an important reason why we usually treat gas as ideal unless there is another reason.

PV=nRT

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

The statement which is true for ideal gases at stp conditions is: one mole of an ideal gas has a volume of 22.4L which is also known as standard molar volume.

To know more about ideal gas, check out:

https://brainly.com/question/25290815

#SPJ4

The percentage decrease in the amount of dissolved oxygen is 10%

Percent yield is the percent ratio of actual yield to the theoretical yield. It is calculated to be the experimental yield divided by theoretical yield multiplied by 100%. If the actual and theoretical yield ​are the same, the percent yield is 100%

In chemistry, yield is a measure of the quantity of moles of a product formed in relation to the reactant consumed, obtained in a chemical reaction, usually expressed as a percentage.

From the graph,

The amount of dissolved oxygen at  15°C is 10 mg/L

The amount of dissolved oxygen at  20°C is 9 mg/L

The decrease in the amount of dissolved oxygen is 1mg/L

The percentage decrease = (1/10) × 100 = 10%

Learn more about Percentage yield, here:

https://brainly.com/question/30794636

#SPJ1

Answer:

T₂ = 317.87 K

Explanation:

Given data:

Initial pressure = 15 atm

Final pressure = 16 atm

Initial temperature = 298 K

Final temperature = ?

Solution:

According to Gay-Lussac Law,

The pressure of given amount of a gas is directly proportional to its temperature at constant volume and number of moles.

Mathematical relationship:

P₁/T₁ = P₂/T₂

Now we will put the values in formula:

15 atm / 298K = 16 atm/T₂

T₂ = 16atm × 298 K / 15 atm

T₂ = 4768 atm. K / 15 atm

T₂ = 317.87 K

Answer:The bigger the atom the lesser the ability of the atom to hold on to its valence electrons.

Explanation:

The larger the atom, the lesser the tendency for the atom to withhold its valence electrons.

The size of an atom is usually estimated in terms of its atomic radius. Across the period in the periodic table, the atomic radius decreases progressively from left to right. This is due to the progressive increase in the nuclear charge (i.e., the number of protons in the nucleus) without an attendant increase in the number of electron shells.

Similarly, down the group, the atomic radius increases progressively from top to bottom due to the successive number of electrons' shells.

Thus, the larger the atom's radius, the smaller the Ionization energy because of the increasing shielding effect of inner shell electrons on the electron to be removed from the nuclear attraction.

Finally, we can conclude that as the atom becomes larger, the tendency to withhold the electrons on the outer shell decreases due to distance and the shielding/ screening effect.

The number of valence electron in the outermost shell of a nitrogen atom is a pair of electrons. Hence, the number of non - bonding electrons on a nitrogen atom is 2.

Therefore, there are two non - bonding atoms.

Learn more :https://brainly.com/question/2948214

In ammonia (NH3) the number of non-bonded electrons are 2.

In nitrogen atom there are five electrons in its outermost shell. In ammonia (NH3) three electrons of nitrogen atom covalently bonded with three hydrogen atoms whereas the remaining two are non-bonded electrons.

Due to this non-bonded electron pair, ammonia reacts violently with oxidizing gases such as chlorine, bromine, and other halogens etc so we can conclude that 2 electrons are present in the compound of ammonia.

Learn more: https://brainly.com/question/19841665

the formula below for the application of KVL around i1 is KVL around loop i1: -10V + 5Ω * (I1 - I2) + 10Ω * I1 = 0.

According to Kirchhoff's Voltage Law (KVL), the sum of the voltages around a closed loop in a circuit is equal to zero. In this case, we are applying KVL around loop i1. The equation represents the sum of voltage drops in the loop, where -10V is a voltage source, 5Ω * (I1 - I2) represents the voltage drop across the 5Ω resistor due to the difference in mesh currents I1 and I2, and 10Ω * I1 represents the voltage drop across the 10Ω resistor due to the current I1. The equation is set equal to zero to satisfy KVL.

ii. KVL around loop i2: 10Ω * I2 - 5Ω * (I1 - I2) + 2V = 0

Similar to i, this equation represents the application of KVL around loop i2. The 10Ω * I2 term represents the voltage drop across the 10Ω resistor due to the current I2, the -5Ω * (I1 - I2) term represents the voltage drop across the 5Ω resistor due to the difference in mesh currents I1 and I2, and the 2V term represents a voltage source. The equation is set equal to zero to satisfy KVL.

iii. Determine the current i1: Substitute the obtained values into the equation for i1 and solve for I1 in mA.

iv. Determine the current i2: Substitute the obtained values into the equation for i2 and solve for I2 in mA.

v. Determine Vo: Substitute the obtained values for i1 and i2 into the appropriate equation representing the voltage at Vo, and calculate the value in V.

learn more about Kirchhoff's Voltage, here

https://brainly.com/question/30400751

#SPJ4

Answer: The rock and soil had gravitational potential energy at the edge of the road, overlooking the river. The rain added mass and caused the rock and soil to loosen. The rock and soil gained kinetic energy as it slid down into the river.

Explanation:

Answer:

The rock and soil had gravitational potential energy at the edge of the road, overlooking the river. The rain added mass and caused the rock and soil to loosen. The rock and soil gained kinetic energy as it slid down into the river

Explanation:

The Avogadro number in chemistry is 6.022 x 10²³ in scientific notation and 6.022E23 in engineering notation.

The Avogadro number, denoted as Nₐ, is a fundamental constant in chemistry that represents the number of atoms or molecules in one mole of a substance. It is approximately equal to 6.022 x 10²³.

In scientific notation, the Avogadro number is written as 6.022 x 10²³. This notation consists of a coefficient (6.022) multiplied by 10 raised to a certain power (23 in this case), indicating the number of zeros to be added after the coefficient.

In engineering notation, the Avogadro number is represented as 6.022E23. Here, the "E" denotes "times ten raised to the power of," and the number following it (23) indicates the exponent.

learn more about Avogadro number here:

https://brainly.com/question/11907018

#SPJ4

When filling two or more orbitals of the same energy with electrons, the electrons will pair up in the same orbital. This statement is false.

An orbital is a space or region within an atom where there is a high probability of finding an electron. A maximum of two electrons is present in each orbital. This is according to the Pauli exclusion principle. When filling two or more orbitals of the same energy with electrons, the electrons will pair up in the same orbital.The four quantum numbers (n, l, m, s) determine the shape and location of the orbitals.

The first three quantum numbers (n, l, m) describe the shape and size of the orbital. The spin quantum number (s) determines the spin of the electron. An orbital can be filled with electrons in a specific order. This is called the Aufbau Principle. An electron configuration describes how electrons are distributed among the various orbitals in an atom. Electrons fill the orbitals in an atom in order of increasing energy.

They fill orbitals that are closest to the nucleus first. The electrons also pair up in the same orbital after all orbitals have at least one electron. They fill each orbital with one electron before pairing up. Thus, the electrons will pair up in the same orbital after all the orbitals have at least one electron. Electrons pair up in the same orbital rather than different orbitals when filling two or more orbitals of the same energy.

The correct option is B) False.

Learn more about orbital -

brainly.com/question/28888362

#SPJ11

To make a 50.0 mL solution of 1.7 M sodium carbonate (Na₂CO3), we need to determine the mass of Na₂CO3 required.

To calculate the mass of Na₂CO3 needed, we can use the formula:

Mass = Concentration x Volume x Molar Mass

First, we convert the given volume from milliliters to liters:

Volume = 50.0 mL = 50.0/1000 L = 0.05 L

Next, we substitute the given concentration and volume values into the formula:

Mass = 1.7 M x 0.05 L x Molar Mass of Na₂CO3

The molar mass of Na₂CO3 can be calculated by adding the atomic masses of sodium (Na), carbon (C), and three oxygen (O) atoms:

Molar Mass of Na₂CO3 = (2 x Atomic Mass of Na) + Atomic Mass of C + (3 x Atomic Mass of O)

After obtaining the molar mass value, we can substitute it into the formula and perform the calculation to determine the mass of Na₂CO3 required to make the 50.0 mL solution of 1.7 M sodium carbonate.

To know more about sodium carbonate click here:

https://brainly.com/question/24475802

#SPJ11

The property that affects a substance's saturation temperature is Pressure.

Saturation temperature is the temperature at which a liquid and a gas have the same vapor pressure. The vapor pressure of a liquid is affected by temperature, and at the saturation temperature, the vapor pressure of the liquid equals the pressure of the surrounding atmosphere.

A substance's saturation temperature is influenced by several variables. Pressure is one of the variables that influences the saturation temperature of a substance. When the pressure surrounding a substance rises, its saturation temperature rises.

Read more about mass:

https://brainly.com/question/19385703

#SPJ11

Democritus said matter can not be divided indefinitely, Aristotle said that matter was made of four elements while John Dalton proposed a modern atomic model based on experimentation. Rutherford said atoms are mostly empty space, Thompson brought about negative electrons in a positive framework.  Bohr said that electrons orbit the nucleus in “shells.

There are many atomic models that was proposed which includes:

Rutherford in his experiment shot alpha (α) particles at gold foil whereby most particles passed through.

Hence he concluded the following:

Some positive α-particles deflected or bounced back.

Learn more about atomic models at: https://brainly.com/question/28825274

#SPJ1

The pH of the liquid in Barry’s mouth before he started eating is 7 and the liquid is neutral.

The pH of the liquid in Barry’s mouth after he started eating decreased and became acidic.

The pH scale is a measure of the acidity or basicity of a solution.

It ranges from 0 to 14, with 7 being considered neutral.

A pH below 7 is considered acidic, while a pH above 7 is considered basic or alkaline.

The pH scale is logarithmic, meaning that a change of one unit in pH represents a ten-fold change in acidity or alkalinity. For example, a solution with a pH of 5 is one hundred times more acidic than a solution with a pH of 7 which is neutral.

The pH of a solution can be measured using a pH meter.

Learn more about the pH scale at: https://brainly.com/question/15075648

#SPJ1

Answer:

[Au] = 0.171 M

Explanation:

For this question, we assume the rock is 100 % gold.

First of all, we determine the moles of gold

67.3 g . 1mol/ 196.97g = 0.342 moles

Molar concentration is defined as the moles of solute, contained in 1L of solution.

Our solution volume is 2L.

M = 0.342 mol / 2L = 0.171

Molar concentration, also called molarity of solution is the most typical unit of concentration.

Answer:

i think its B but im not so sure

Answer:

Biochemistry is the discipline that studies the chemistry of life, and its objective is to explain form and function based on chemical principles. Organic chemistry is the discipline devoted to the study of carbon-based chemistry, which is the foundation for the study of biomolecules and the discipline of biochemistry. Both biochemistry and organic chemistry are based on the concepts of general chemistry, some of which are presented in Fundamentals of Physics and Chemistry Important to Microbiology.

Explanation:

Answer:

To find out the number of atoms: MULTIPLY all the SUBSCRIPTS in the molecule by the COEFFICIENT. (This will give you the number of atoms of each element.)

Explanation:

Explanation:

Molecules that are made of two or more different elements bonded together are called ... compound....

Answer:

COMPOUNDS

Explanation:

A compound consists of two or more types of elements held together by covalent or ionic bonds.

if this is right,please mark me as brainliest :)

Answer:

ALPHA

Explanation:

Because the nucleus can't hold the 18 electrons in the Cl- ion as tightly as the 17 electrons in the neutral atom, the negative ion is significantly larger than the atom from which it forms. For the same reason, positive ions should be smaller than the atoms from which they are formed.

The concentration of the new solution 0.71 M

It is given that:

initial volume of solution = 25 ml

concentration of solution = 2.3 m

volume of solution after dilution = 80 ml

We have to find:

concentration of solution after dilution

Molarity is define as moles of solute present in 1000 ml of solution. It's unit is given by mol/L or M. Here molarity is given by the formula

Here, M1V1 refers to mass and volume of 1 component and M2V2 refers to mass and volume of other component

M1V1 = M2V2

M2 = (V1/V2)*M1

M2 = 25/80*2.3 = 0.71 M

So, molarity of solution after dilution is 0.71 M

Learn more about Molarity here:

https://brainly.com/question/26873446

#SPJ4

The correct explanation is option A. The fact that there are more particles (including particles in the gas state) in the reactants than in the product indicates that the entropy change, ΔS, of the reaction is negative.

This leads to a negative value of the Gibbs free energy change, ΔG = ΔH - TΔS, where ΔH is the enthalpy change and T is the temperature in Kelvin.

However, because ΔH is large and negative, the reaction will still be thermodynamically favorable at low temperatures where TΔS is smaller than ΔH.

It is important to note that the thermodynamic favorability of a reaction depends on both the enthalpy and entropy changes, and cannot be determined solely based on the stoichiometry of the reaction. In this case, even though there are fewer particles in the product than in the reactants, the large negative enthalpy change drives the reaction towards product formation.

For more such questions on entropy

https://brainly.com/question/30481619

#SPJ11

Answer:

In biology and medical research, the term "titre" refers to the concentration of a substance in a solution, usually expressed as the highest dilution or concentration at which a specific reaction occurs.

The term "consistent titres" generally refers to the reproducibility of titration results. It means that when a substance is repeatedly tested using the same method, the resulting titres are very similar or identical.

Consistent titres are important in many areas of biology and medicine, particularly in the diagnosis and monitoring of diseases. For example, when testing for antibodies against a particular virus or bacterium in a patient's blood sample, consistent titres over time can help indicate the progress of the disease or the effectiveness of treatment.

Overall, consistent titres are an important aspect of accurate and reliable experimental results, and they can provide valuable information in various fields of research.

The pressure of the hydrogen gas is approximately 178.852 kPa.

To determine the pressure of the hydrogen gas, consider the difference in the mercury levels between the open end and the end connected to the hydrogen.

Given:

Mercury level difference: 62 mm

Atmospheric pressure: 97.7 kPa

In an open manometer, the pressure difference between the two ends is equal to the difference in mercury levels. The pressure at the end connected to the hydrogen can be calculated as:

Pressure of hydrogen = Atmospheric pressure + Pressure difference

The pressure difference can be determined by converting the mercury level difference to pressure units using the density of mercury. The density of mercury is typically around 13,600 kg/m³.

Pressure difference = Density of mercury × g × Height difference

First, convert the height difference from millimeters to meters:

Height difference = 62 mm × (1 m / 1000 mm) = 0.062 m

Substituting the values:

Pressure difference = 13600 kg/m³ × 9.8 m/s² × 0.062 m = 81.152 kPa

Now, calculate the pressure of the hydrogen:

Pressure of hydrogen = 97.7 kPa + 81.152 kPa = 178.852 kPa

Therefore, the pressure of the hydrogen gas is approximately 178.852 kPa.

Find out more on pressure here: https://brainly.com/question/25736513

#SPJ4

A unit cell can be visualized as a building block that, when replicated in all directions, creates the entire crystal lattice. Unit cells can have different shapes, the most common types of unit cells include simple cubic, body-centered cubic, and face-centered cubic etc.

(a) Definition of a unit cell: A unit cell is the basic repeating unit of a crystal lattice. It represents the smallest portion of a crystal that, when stacked together, can generate the entire crystal structure.

(b) Sketch of a body-centered cubic (BCC) unit cell is represented in the image below. In the BCC unit cell, atoms are located at the eight corners of the cube and one atom is positioned at the center of the cube.

(c) Coordination number in a BCC unit cell: The coordination number is the number of nearest neighboring atoms surrounding a central atom. In a BCC unit cell, each atom is in contact with eight nearest neighboring atoms: one in the center of the unit cell and one at each of the eight corners.

(d) Calculation for the atomic packing factor (APF) of a BCC unit cell:

The APF is calculated as the volume occupied by the atoms in the unit cell divided by the total volume of the unit cell.

For a BCC unit cell, the APF can be calculated as follows:

APF = (Number of atoms in the unit cell * Volume of each atom) / Volume of the unit cell

In a BCC unit cell, there are two atoms (one at the center and one at the corner), and the volume of each atom can be approximated as (\(4/3\)) * π * \((radius)^3\). The volume of the unit cell can be calculated as the cube of the edge length.

Learn more about crystal lattice here:

https://brainly.com/question/13008800

#SPJ11

Answer:

chemical chlorine will have more reaction

Explanation:

salt, sugar and coffee :)

Answer:

(CH3COO)2 + redP + Cl2 → ClCH2COOH + HCl

Explanation:

This is an example of halogenation of carboxylic acids at alpha carbon atom. In this reaction, red phosphorus and chlorine are treated with carboxylic acids having alpha hydrogen atom followed by hydrolysis to form alpha chloro carboxylic acid.