Question 10
Which chemical species is an intermediate in the formation of the goal reaction?

Answer:

D. 2.5 dm3

Explanation:

Alright, first off, you gotta find how many moles Sodium Hydroxide (NaOH) has.

20.0g NaOH x (1 mol / 40.0g NaOh (got amount from Periodic Table))

Basically, it's 20.0g / 40.0g, which gives 0.5 mol since the grams cancel each other. Then we know the pyramid (mol / M x L) so...

0.5 mol x 0.20 M = 2.5 dm3

Phosphorous at 18.9%. According to analysis, sodium, phosphorus, and oxygen make up 42.1%, 18.9%, and 39% of sodium phosphate, respectively.

The ratio of the amounts of each element to the sum of the individual element amounts present in the compound, multiplied by 100, is the definition of the percentage of a given compound. In this instance, the quantity is expressed in grams of the constituent ingredients.

The proportional mass of each component of a compound is known as the percent composition. The mass percent of a compound is the weight of an element expressed as a share of the complex's overall mass. For instance, a molecule of water has a structure of one oxygen atom and two hydrogen atoms.

To know more about percentage composition visit:

https://brainly.com/question/11856940

#SPJ1

Calcium atoms will lose two electrons in order to achieve the noble gas configuration of argon. A neutral calcium atom has 20 electrons, while a calcium atom that has lost two electrons will have 18 electrons, and a neutral argon atom also has 18 electrons.

Calcium has two valence electrons in its last energy level.

It is easier to lose two electrons to adquire stability in order to achieve the noble gas configuration.

Thus, calcium will lose two electrons to get a full outer shell.

Based on the rate constant of the reaction, the reaction rate, r 4.8 * 10⁻⁷ mol/L.s

The rate of a reaction is the number of moles of reactant molecules converted or the number of moles of product molecules formed per unit time.

It is the rate at which product molecules are formed or reactant molecules disappear.

The rate equation of a chemical reaction is an expression that describes the relationship between the rate of the chemical reaction and the concentration of the reactants in the chemical reaction.

The rate equation includes a rate constant which is a constant that is unique for a given reaction. The rate constant numerically describes the rate and direction of a chemical reaction.

Considering the given rate equation:

reaction rate = k [NH4 + (aq) ] [NO2(aq) ]

the data provided is as follows;

k =  3.20 x 10⁴ L/(mol⋅s)

[NH4+ ] = 0.100 mol/L and,

[NO2] = 0.0150 mol/L

The reaction rate, r will be:

r = 3.20 x 10⁻⁴ L/(mol⋅s) * 0.100 mol/L *  0.0150 mol/L

r = 4.8 * 10⁻⁷ mol/L.s

Learn more about rate equation at: https://brainly.com/question/24749252

#SPJ1

The formed cyclopropane has cis stereochemistry.

Chiral cyclopropane rings are important pharmacophores in pharmaceutical drugs and bioactive natural products, so libraries of these building blocks are an important resource for drug research and development campaigns.

A synthesis is a set of two or even more reactions that are designed to produce a specific end product. A synthetic step is a single reaction that has to be carried out independently of the other reactions in a synthesis.

The number of steps inside a synthetic sequence equals the number of reactions that need to be performed separately, i.e. the number of reactions that comprise the sequence.

By stereospecific addi-tion of singlet carbenes, cis cyclopropane could be synthesized from cis alkene. Using a Lindlar catalyst, cis alkene could be synthesized from alkynes.

To know more about the cyclopropane, here

https://brainly.com/question/29385628

#SPJ4

The equilibrium constant of the reverse reaction is 0.394.

It is given that the equilibrium constant for the forward reaction is 2.54. Then the equilibrium constant of the reverse reaction is calculated by taking the reciprocal of the equilibrium constant of the forward reaction. This is given by,

K reverse = 1/K forward

On Substituting we get,

K reverse = 1/2.54

K reverse = 0.394

Therefore, the equilibrium constant of the reverse reaction is 0.394.

Generally, the equilibrium of a chemical reaction is given by the equal concentrations of reactant and the product during the reaction. This can be  expressed as,

The concentration of reactants = concentration of products

Therefore the equilibrium constant of the reactant side will be reciprocal of the product side.

The reaction side is the forward reaction and the product side is the reverse reaction.

To know more about the equilibrium constant, click below:

https://brainly.com/question/517289

#SPJ4

The h is orange juice is 0.00020 m. The pH of orange juice is 3.7. The orange juice is acidic.

pH is potential hydrogen. It is the measurement of the acidity and basicity of any solution.

pH = -log [H+]

the h is 0.00020

Thus, the pH of orange juice is 3.7. The orange juice is acidic.

Learn more about pH

https://brainly.com/question/15289741

#SPJ4

Answer:

B.

Copper and zinc mix to make brass.

Explanation:

This is the only answer in which a new substance is created, the rest of the choices are just mixtures

Answer:

I think it is A I am  not so sure about it

Explanation:

Answer:

Explanation:

The net ionic equation is essentially the most simplified version of a reaction with only the reactants that form the precipitate (the solid). Due to this it is extremely important to properly write your ionic equation first. In your total ionic equation, you forgot to balance the compounds with 2- charges.  The coefficients in your equation is due to the 2- charge of sulfate and 2+  charge of Strontium. Additionally, precipitates are solid which means they do not dissociate. SrSO4 will stay together while KBR which are both spectator ions will dissociate leaving you with the ionic equation below.

Total Ionic Equation: Sr^2 (aq)+  + 2Br ^1- (aq) +2K ^ 1(aq) +  SO4 ^2- (aq) --> SrSO4 (s) + 2K^1+ (aq) + 2Br^1- (aq)

The coefficient of 2 on both K and Br in the products is to ensure that the equation is balanced and that for your net ionic equation, all spectator ions cancel. When you cancel all of the ions that dissociate you are left with the essence of the reaction:

Net Ionic Equation:  Sr^2 (aq) + SO4 ^2- (aq) --> SrSO4 (s)

We can define a quantity called the equilibrium constant \(K_{c}\) based on the concentrations of all the different reaction species at equilibrium, which is also sometimes written as \(K_{eq}\) or K.

Because the equilibrium constant describes the molar concentrations, at equilibrium for a specific temperature, the c in the subscript stands for concentration \(\frac{mol}{L}\).

At equilibrium, the equilibrium constant can tell us whether the reaction has a higher concentration of products or reactants. We can also use \(K_{c}\) to see if the reaction has already reached equilibrium.

If any of the reactants or products are gases, the equilibrium constant can also be expressed in terms of the partial pressure of the gases. We typically use that value as \(K_{p}\) to distinguish it from the equilibrium constant when using molar concentrations \(K_{c}\).

To learn more about equilibrium constant, please refer:

https://brainly.com/question/12593147

#SPJ4

Transmit a ground-state electron to an excited state. One or more electrons can be removed from neutral atoms to transform them into positively charged ions.

To learn more about atom become an ion refer to:

https://brainly.com/question/13688385

#SPJ4

Answer:

a and d

Explanation:

Answer:

A double displacement reaction is a type of reaction in which two reactants exchange ions to form two new compounds. Double displacement reactions typically result in the formation of a product that is a precipitate

Explanation:

Mark me as brainlist. Hope this helps you.

The chemical structures of the given compounds:

Phosphorous pentafluoride - Trigonal bipyramidal

Chloramine - Trigonal pyramidal

Water- bent

Xenon tetrafluoride - Square plannar

A chemical structure includes specifying the molecular geometry and, when necessary, the electronic structure of the target molecule or other solid.

Molecular geometry can be described as the spatial arrangement of atoms in a molecule and the chemical bonds that hold the atoms together. It can be represented using structural formulae and molecular models. The complete electronic structure includes specifying the occupation of a molecule's molecular orbitals.

In the geometry of molcules, we do consider the lone pairs but in the shape of the molecule, we exclude the lone pairs.

Learn more about Chemical structure, here:

https://brainly.com/question/14481803

#SPJ1

Answer:

\({ \boxed{ \mathfrak{ \: answer : \: { \bf{v = f \lambda}} }}}\)

First blank: 1

Second blank: 27

Third blank: 3

Fourth blank: 16

Fifth blank: 3

Sixth blank: 1

Seventh blank: 78

Answer:

1. 7

2. 7

3. 16.60

Explanation:

1. 7

3x-3=18

+3 +3

3x=21

/3 /3

x=7

2. 7

4x-5=23

+5. +5

4x=28

/4. /4

x=7

3. 16.60

it reaches above the halfway point after 16, and it's one above it. So, it's 16.60

To make a 60 ml of 2% Minoxidil solution, 120 tablets of 10 mg Minoxidil are required.

To make a 2% solution of Minoxidil, we need 2 grams of Minoxidil in 100 ml of solution.

First, we need to convert 60 ml to grams. Since 1 ml of water weighs 1 gram, we can assume that 60 ml of solution weighs 60 grams.

To make a 2% solution, we need 2 grams of Minoxidil in 100 ml of solution. This means that for 60 ml of solution, we need:

(2 grams / 100 ml) x 60 ml = 1.2 grams

Each Minoxidil tablet has a weight of 10 mg, which is equivalent to 0.01 grams. Therefore, the number of tablets needed is:

1.2 grams ÷ 0.01 grams per tablet = 120 tablets

So the answer is A) 120 tablets.

Visit to know more about Solution:-

brainly.com/question/25326161

#SPJ11

Answer:

La configuración de estado fundamental del oro es [Xe]5d106s1 La diferencia de nivel de energía entre el 6s y el 5d es pequeña. Esto hace posible que uno de los dos electrones 6s esté en los orbitales 5d.

Explanation:

1)  The concentration of the first solution = 0.007625 M.

    The concentration of the second solution = 0.0003813 M.

    The concentration of the third solution = 0.00001906 M.

The amount of solute that has been dissolved in a specific volume of solvent or solution is measured by the solution's concentration. A solution that contains a significant amount of dissolved solute is said to be concentrated. A solution is said to be dilute if it only contains a little amount of dissolved solute.

1. For the first solution:

Initial concentration = n₁ = 0.1525 M

Volume taken = v₁ = 5 ml

Final concentration = n₂ = ?

Final volume = v₂ = 100 ml

We know,

n₁ v₁ = n₂ v₂

n₂ = n₁v₁/ v₂ = ( 0.1525 M × 5ml) / 100 ml

n₂ = 0.007625 M

The first solution's concentration is 0.007625 M.

For the second solution:

Initial concentration = n₁ = 0.007625 M

Volume taken = v₂ = 5 ml

Final concentration = n₂ = ?

Final volume = v₂ = 100 ml

We know,

n₁ v₁ = n₂ v₂

n₂ = n₁v₁/ v₂ = ( 0. 007625 M × 5ml) / 100 ml

n₂ = 0.0003813 M

The second solution's concentration is 0.0003813 M.

For the third solution:

Initial concentration = n₁ = 0.0003813 M

Volume taken = v₁ = 5 ml

Final concentration = n₂ = ?

Final volume = v₂ = 100 ml

We know,

n₁ v₁ = n₂ v₂

n₂ = n₁v₁/ v₂ = ( 0.0003813 M × 5ml) / 100 ml

n₂ = 0.00001906 M

The third solution's concentration is 0.00001906 M.

To know more about the Concentration of a solution, refer to this link:

https://brainly.com/question/28480075

#SPJ4

Answer:

12000cm³ is the answer

hope it helps you mate please mark me as brainliast

Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore,  volume of carbon dioxide gas made is 11.2L.

The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.

The balanced equation for the given reaction can be given as

Na\(_2\)CO\(_3\)(aq) + 2HCl(aq) → 2NaCl(aq) + CO\(_2\)(g) + H2O(l)

moles of  hydrochloric acid = 10.0dm³ × 0.10mol/ dm³

                                              =1 mole

The mole ratio between carbon dioxide and HCl is 1:2.

mole of  CO\(_2\)=0.5 moles

volume of  CO\(_2\)=moles× 22.4

                         =0.5 ×22.4

                         =11.2L

Therefore,  volume of carbon dioxide gas made is 11.2L.

To know more about mole, here:

https://brainly.com/question/15209553

#SPJ3

option of d is the write answer

Answer:

I would say A

hope this is right

Answer:

it is closer to the south pole

Explanation:

The planet's albedo has ability to reflect light.

The planetary albedo would be the percentage of incoming solar radiation that Earth scatters back into space. The processes that control the quantity, distribution, and fluctuation of this reflected energy are crucial to the Earth's energy balance and have a significant impact on both climate including climate change.

Temperatures rise as a result of carbon dioxide, prolonging the growing season as well as raising the humidity. Each of these elements has stimulated some further plant growth. But hotter weather also stresses plants. Plants require more water to live in an extended, warmer growing season.

Therefore,  the planet's albedo has ability to reflect light.

To know more about planet's albedo

https://brainly.com/question/7138899

#SPJ4

Answer:

Nylon Clothes. When the clothes made up of nylon are rubbed against some other fabric or against the wearer's skin, static electricity is formed.

Explanation:

Hope this helps

Answer:

when you rub a balloon on your hair and it stands up

Explanation:

Answer:

1.water  2. air 3.aluminum  4.steel 5.iron  6.silver 7.gold

Explanation:

The density of iron is = 7.86 g/mL

The density of gold is  = 19.3 g/mL

The density of steel  is = 7.8 g/mL

The density of water is  = 1.00 g/mL

The density of air  is = 1.29 g/mL

The density of silver is = 10.5 g/mL

The density of aluminium is  = 2.70 g/mL

so..

water < air < aluminum < steel < iron < silver < gold

A. Br and Br: The bond between two identical atoms is always pure covalent since both atoms have the same electronegativity. So, the bond between Br and Br is pure covalent.

B. O and F: Oxygen and fluorine have different electronegativities, and thus the bond between them is polar covalent. The shared electrons are closer to the more electronegative fluorine atom, creating a partial negative charge on the fluorine and a partial positive charge on the oxygen.

C. N and Cl: Nitrogen and chlorine have different electronegativities, and thus the bond between them is polar covalent. The shared electrons are closer to the more electronegative chlorine atom, creating a partial negative charge on the chlorine and a partial positive charge on the nitrogen.

D. Sr and O: Strontium is a metal, and oxygen is a nonmetal. Thus, the bond between them is ionic. The strontium atom loses two electrons, forming a cation with a 2+ charge, and the oxygen atom gains two electrons, forming an anion with a 2- charge. The electrostatic attraction between the oppositely charged ions forms the ionic bond.

To learn more about atoms refer to:

brainly.com/question/30898688

#SPJ4