6. 2074 Old Q.No. 20 2072 Q.No. 20 What is normality? How can you prepare sodium carbonate in 250 ml? 10 solution of sodium carbonate in 250 ml?​

Answer: The balanced equation is \(V_{2}O_{5} + 5Ca \rightarrow 2V + 5CaO\).

Explanation:

A chemical equation which contains same number of atoms on both reactant and product side is called a balanced chemical equation.

For example, \(V_{2}O_{5} + Ca \rightarrow V + CaO\)

Here, number of atoms on reactant side are as follows.

The number of atoms on product side are as follows.

In order to balance this equation, multiply Ca by 5 on reactant side. Multiply V by 2 and CaO by 5 on product side. Therefore, the equation can be rewritten as follows.

\(V_{2}O_{5} + 5Ca \rightarrow 2V + 5CaO\)

Now here, number of atoms on reactant side are as follows.

The number of atoms on product side are as follows.

Since, there are same number of atoms on both reactant and product side. So, the equation is now balanced.

Thus, we can conclude that the balanced equation is \(V_{2}O_{5} + 5Ca \rightarrow 2V + 5CaO\).

i believe its B

Explanation:

A) Incorrect. It is not guaranteed that adding gas particles to the container will decrease the kinetic energy, as we don't know what energy those particles have to begin with.

B) Incorrect. We are not given any information that reveals that the container will break.

C) Incorrect. Because there are more particles, more collisions will occur in the container, increasing the likelihood that bonds may form between particles. This deviates from ideal gas behaviour.

D) Correct. Adding particles will increase the number of collisions that occurs as well as the overall pressure.

Option D

56) The Aufbau principle has been violated. Option C

57) Hund's rule was violated. Option A

58) This is a valid orbital diagram. Option D

We know that as we fill the electrons in to the atoms of the elements there bare some rules that we have to observe in the process and all of these rules are the things that make up what we call the Aufbau principle.

In effect one of the rules that we ought to know is the Pauli  exclusion principle that states that electrons  do not have the same values for all the four quantum numbers.

Learn more about quantum numbers:https://brainly.com/question/16977590

#SPJ1

The average atomic mass of the element is 12.0107 amu.

To calculate the average atomic mass of the element in question, we can use the following formula:

average atomic mass = (mass of isotope 1 x abundance of isotope 1) + (mass of isotope 2 x abundance of isotope 2)

where "mass of isotope 1" is the mass of the first stable isotope (13 amu in this case), "abundance of isotope 1" is the percentage of that isotope in the element (1.07% in this case), "mass of isotope 2" is the mass of the second stable isotope (12 amu in this case), and "abundance of isotope 2" is the percentage of that isotope in the element (98.93% in this case).

Substituting the given values in the formula, we get:

average atomic mass = (13 amu x 1.07%) + (12 amu x 98.93%)

average atomic mass = (0.1391 amu) + (11.8716 amu)

average atomic mass = 12.0107 amu

Therefore, the average atomic mass of the element is 12.0107 amu.

This means that on average, one atom of this element weighs 12.0107 atomic mass units (amu), which is slightly heavier than the most abundant isotope (12 amu) due to the presence of the less abundant isotope (13 amu). This concept is important in chemistry because the mass of atoms plays a crucial role in determining their chemical and physical properties. The knowledge of the average atomic mass of an element is important in a wide range of applications, including analytical chemistry, geochemistry, and nuclear physics.

Know  more about atomic mass here:

https://brainly.com/question/3187640

#SPJ11

Reverse the sign of the second equation, change the sign of the enthalpy and add. Option B

The enthalpy could be obtained by the use of the Hess law of constant heat summation. As such, we have a number steps and it is possible for use to obtain the enthalpy of the final reaction as shown by a series of manipulations.

By inspection, we can see that, if we desire to obtain the enthalpy of the final reaction as shown, then we have to reverse the sign of the second equation, change the sign of the enthalpy and add. Option B

Learn more about enthalpy:https://brainly.com/question/13996238

#SPJ1

The chemical element in group one that is also a member of period 2 is lithium.

The chemical element in group one that is also a member of period 2 is lithium therefore, the element referred to here is lithium. Group 1 has only one valence electron. If we add one to 23, we will have 24 and the element is chromium.

For question three, the focus is on period 5, five groups to the previous answer will give us the element molybdenum. The atomic number of Mo is 42 and its mass number 96 hence it has 54 neutrons. The element that has atomic number 54 is Xe.

The element that has atomic mass 43 which is reversal of the atomic number of the former answer is scandium.

Learn more: https://brainly.com/question/967776

Robert Millikan made the discovery of an electron's charge.

When Robert Millikan discovered the charge of an electron, he was awarded the 1923 Nobel Prize in Physics. R. Millikan, an American scientist, used negatively charged oil droplets to gauge the charge of an electron in 1909. An electron's measured charge (e⁻) is 1.60×10⁻¹⁹

The most brilliant work of his life was completed after his return from America: an original study of cathode rays that led to the discovery of the electron, which was revealed during his evening lecture to the Royal Institution on Friday, April 30, 1897.

In the experiment, Milliken let charged, microscopic oil droplets enter an electric field through a hole. The charge over an oil droplet was estimated by altering the electric field's strength, and it always resulted in an integral value of "e."

Thus, Robert Millikan discovered the charge of an electron.

To learn more about electron refer- https://brainly.com/question/860094

#SPJ4

The statements that correctly describe the mechanism of the reduction of acid chlorides and esters with a metal-hydride reducing agent.

Reduction is a reaction in which the oxidation number decreases and electrons gain. It can be said that reduction is a reaction in which a substance loses oxygen.

Oxidation is a reaction that has an increase in oxidation number and a decrease in electrons. It can be said that oxidation is a reaction in which a substance binds oxygen.

Learn more about reduction at https://brainly.com/question/14283278.

#SPJ4

Answer:

39.99g/mol

Explanation:

Na = 22

O= 16

H = 1

= 40g or 39.99g/mol

Answer: 39.99g/mol

Explanation:

right

Answer:

If it is 20 N and 50 N then, the net force would be 70 N if they are on the same side

Explanation:

Are they on the same side?

Taking into account the reaction stoichiometry, 1 mole of H₂ can be produced by reacting 2 moles of HCI.

In first place, the balanced reaction is:

Mg + 2 HCl  → MgCl₂ + H₂

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

By reaction stoichiometry 2 moles of HCl form 1 mole of H₂.

Learn more about the reaction stoichiometry:

brainly.com/question/24741074

brainly.com/question/24653699

#SPJ1

The compound belongs to the alcohol class. This is indicated by the hydroxyl group (-OH) bonded to one of the carbons.

The name for this compound is Ethanol.

16,066.56Joules

The amount of heat energy required is expressed according to the formula;

where:

• m is the mass of water = 48grams

• c is the specific heat capacity of water = 4.184 J/g°C

• △,t ,is the change in temperature, = 120 - 4,0 = 80°C

Substitute the given parameters into the formula

Hence the amount of energy required to heat 48 grams of water from 40 °C to 120 °C is 16,066.56Joules

The final concentration of the chloride ions is  0.32 M.

We know that we have to obtain the number of moles of the iron II chloride that was reacted in the solution and then we would have;

Number of moles of iron II chloride = 4.08g /127 g/mol = 0.032 moles

Given the fact that there are two chloride ions hence the amount of the chloride ions is 0.016 moles

The concentration of the silver nitrate = 50/1000  *  0.60 M

= 0.03 moles

Thus we would have a final concentration of 0.016 moles/ 0.05

= 0.32 M

Learn more about concentration:https://brainly.com/question/10725862

#SPJ1

The new Vapor pressure of the dietheylether is  6.52 atm.

We have to note that the vapor pressure would have to do with the ease with which the substance can be converted from liquid to vapor. In this case we can see that we have about two different temperatures and we are trying to obtain the vapor pressure at each of the temperatures that have been given.

Using the formula;

ln(P2/P1) = -ΔHvap/R(1/T2 - 1/T1)

P2 = final pressure

P1 = initial pressure

ΔHvap = Enthalpy of vaporization

R = constant

T = Temperature

ln(P2/0.703) = -29.1 * 10^3/8.314(1/354 - 1/298)

ln(P2/0.703) =  -3651.3(0.0028 - 0.0034)

ln(P2/0.703) = 2.19

(P2/0.703)  = e^2.19

P2 = e^2.19 * 0.73

P2 = 6.52 atm

It has a vapor pressure of about  6.52 atm.

Learn more about vapor pressure:https://brainly.com/question/25715932

#SPJ1

The table that can depict the compound is given below

Sodium +1 Na+ Chloride -1 Cl-

Potassium +1 K+ Oxide -2 O2-

Calcium +2 Ca2+ Nitride -3 N3-

Magnesium +2 Mg2+ Sulfide -2 S2-

Ionic compounds are the compounds made up of ions that form charged particles when an atom gains or loses electrons. A cation is an ion charged positively; an anion is an ion charged negatively.

In this table, the first column lists the names of the ions, the second column shows their corresponding charges, and the third column displays their ion formulas.

Learn more about compound on

https://brainly.com/question/2687188

#SPJ1

Answer:

climate change

Explanation:

climate change is driving force of evolution because when the climate is changed the animal and human need to adapt to it's natural change.

Answer:

not enough information: picture

Explanation:

I'm sorry:(

Answer:

Trend Line Graph.

The graph highlights two other points on the trend line. Use them to find another equation for the trend line shown for this scatterplot.

✔ y = 82x + 998

Explanation:

Answer:

C.

Explanation:

They will need to know the influence of gravitational force on objects because gravity can affect an objects weight.

Hydrogen bonding, which is unquestionably what we have, will occur from the intermolecular force between the molecules of H2O and CH3OH. Atoms trade or exchange valence electrons to create bonds.

Trust and self-esteem are developed in children and adolescents through strong emotional ties. After that, they can leave the family and establish wholesome friendships and other types of social ties. Healthy relationships consequently lower a child's chances of emotional discomfort or antisocial behaviour.

The government of a country issues government bonds, a sort of fixed-interest bond. These bonds are thought of as low-risk investments. Examples of different kinds of government bonds include T - bills, Municipality Bond, Zero-Coupon Bonds, and others.

To know more about intermolecular visit:

https://brainly.com/question/9007693

#SPJ1

Following best describes the purpose and outcome of demonstration: This is demonstration of Boyle's law. As volume increases, the pressure decreases and marshmallow will grow larger.

Gas laws are set of fundamental principles that describe the behavior of gases under different conditions of temperature, pressure, and volume.

These laws include Boyle's law, Charles's law, Gay-Lussac's law, and the combined gas law. These laws help to predict the behavior of gases in different situations and can be used to determine properties such as temperature, pressure, volume, and the number of moles of gas present.

Boyle's Law explains that volume of gas increases as the pressure decreases.

To know more about gas laws, refer

https://brainly.com/question/25290815

#SPJ1

Explanation:

hybridization refers to the process of mixing atomic orbitals in a way that creates new hybrid orbitals. This is commonly observed in organic chemistry, where hybridization is used to explain the shapes and bonding properties of molecules.

The hybridization of atomic orbitals occurs when atoms bond to form molecules. In the hybridization process, the valence electrons of an atom are rearranged and redistributed in order to form new orbitals with different shapes and energies. This can result in stronger and more stable bonding between atoms.

The most common types of hybridization are sp, sp2, and sp3, which involve the mixing of s and p orbitals. For example, in the sp3 hybridization of carbon, the 2s orbital and three 2p orbitals are combined to form four sp3 hybrid orbitals, which are arranged in a tetrahedral shape.

The effects of hybridization in chemistry include changes in the bond angles, bond lengths, and overall shape of molecules. This can affect the reactivity and chemical properties of the molecule, such as its acidity or basicity.

Answer:

kinetic energy

Explanation:

Solid particles have the least amount of energy, and gas particles have the greatest amount of energy. The temperature of a substance is a measure of the average kinetic energy of the particles. A change in phase may occur when the energy of the particles is changed. There are spaces between particles of matter.

Temperature is a measure of the average kinetic energy of the particles of a substance. The higher the temperature of an object, the higher is its kinetic energy.

Temperature measures the average kinetic energy of particles of the substances. Therefore, the temperature of a substance is a measure of the kinetic energy.

Temperature is used to measure degree or intensity of heat of a particular substance. Temperature is measured by an instrument called thermometer.

Temperature can be measured in degree Celsius °c, Kelvin k or in Fahrenheit. Temperature is a physical quantity. Heat always flow from higher temperature source to lower temperature source.

We can convert these units of temperature into one another. The relationship between degree Celsius and Fahrenheit can be expressed as:

°C={5(°F-32)}÷9

The temperature of a substance is a measure of the kinetic energy.

Therefore, the temperature of a substance is a measure of the kinetic energy.

To know more about temperature, here:

https://brainly.com/question/13694966

#SPJ2

The partial charges on each fluorine atom are negative. Option B) The central O atom is the correct answer. Option B

The partial charges in a molecule are determined by the electronegativity values of the atoms involved. Electronegativity is the ability of an atom to attract electrons towards itself in a chemical bond. In the case of \(F_2O\), fluorine (F) is more electronegative than oxygen.

Fluorine is the most electronegative element on the periodic table, meaning it has a high ability to attract electrons. Oxygen is also relatively electronegative but less so than fluorine. When fluorine atoms bond with oxygen, the shared electrons will be pulled more towards the fluorine atoms, creating a polar covalent bond.

In \(F_2O\), each fluorine atom will pull the shared electrons towards itself, resulting in a higher electron density around the fluorine atoms. This creates a region of partial negative charge around the fluorine atoms.

Conversely, the oxygen atom will have a region of lower electron density and, therefore, a partial positive charge. This is because the shared electrons spend more time around the fluorine atoms due to their higher electronegativity.

Option B

For more such question on partial charges visit:

https://brainly.com/question/29974793

#SPJ8

Explanation:

decrease T = eq shifts left, because youre taking energy from the system and this is an endothermic reaction, it needs energy to make products = co2 concentration decreases

add CO = eq shifts right, because you're adding reactants in the equilibrium = i2o5 concentration decreases

increase i2o5 = same = can't affect T

decrease co2 = eq shifts right, because by

decreasing co2 you'll have less of this product than you normally have in the equilibrium, then eq will shift toward making more product = both reactants, CO and I2O5 decrease their concentration because they're being used to shift equilibrium right

Answer:

a. The Zn and HCl both retained their identity.