Show and explain the stereoisomerism exist in the compound.


(Please answer this i need to submit my assignment before the dateline)​

[tex]\\ \rm\Rrightarrow E=h\nu[/tex]

[tex]\\ \rm\Rrightarrow E=6.626\times 10^{-34}\times 9.68\times 10^{19}[/tex]

[tex]\\ \rm\Rrightarrow E=64.1\times 10^{-15}J[/tex]

[tex]\\ \rm\Rrightarrow E=641\times 10^{-16}J[/tex]

[tex]\\ \rm\Rrightarrow E=641eV[/tex]

Answer : D. pOH = 12

solutions turns litmus papers to red : acidic (pH<7)

pH + pOH = 14

A. pOH = 3, pH = 11, alkaline

B. [OH⁻] = 1 x 10⁻⁷ ⇒ pOH = - log [OH⁻]= 7, pOH = pH = neutral

C. [OH⁻] = 1 x 10⁻⁵ ⇒ pOH = - log [OH⁻]= 5, pH = 9, alkaline

D. pOH = 12, pH = 2, acidic

Answer:

d

Explanation:

ph is acid

acid litmus paper converts to red in acidic media

Answer:

B is the answer

We are in a spiral galaxy but as of late scientists believe we are in a barred-spiral galaxy.

Explanation:

Hope this helped.

A brainliest is always appreciated.

Milky way is a type of  barred-spiral galaxy.

A galaxy is defined as a system of stars, stellar remainings, interstellar gas, dust, dark matter, which are bound together by means of gravity.The word is derived from the Greek word which literally means 'milky',as a reference to the Milky Way galaxy which contains the Solar System.

Most of the mass which is present in a galaxy is present in the form of dark matter, out of which only a few percent of the mass

is visible. Supermassive black holes are a common characteristic which are present at the centres of galaxies.

Galaxies are categorized as per their morphology in the shape of elliptical, spiral, or irregular. Many are believed to have supermassive black holes which are present at their centers. The Milky Way's central black hole which is present , also known as Sagittarius A*, has a mass which is four million times greater than the Sun.

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Answer:

43 protons

36 electrons

56 neutron

Explanation:

neutron is mass number minus proton number.

in a non neutral atom the electron is determined after minusing the charges or electron lost.

the number of proton obviously is 43

Based on the data provided, at equilibrium, the concentration of Ni2+ that remains is 4.268 ×10^-6 M

The molar concentration of a solution is the amount in moles of solute dissolved in a given volume of solution in litres.

Total volume of solution after mixing = 110 + 200 = 310 mL

Concentration of Ni2+ = 0.0133M/( 310ml/110ml) = 0.00472M

Concentration of NH3 = 0.250M/(310ml/200ml) = 0.1613 M

Assuming complete formation of Ni(NH3)6, the equation of formation is given as:

From equation of the reaction, 1 mole of Ni2+ reacts with 6 moles of NH3 to produce 1 mole of Ni[(NH3)6]2+

Then,

0.00472 M of Ni2+ react with 0.02832 M of NH3 to give 0.00472 M of Ni2+

Concentration of remaining NH3 = 0.1613 M - 0.02832M = 0.13298 M

The equation of dissociation at equilibrium of Ni(NH3)62+ is given as:

Kd = [Ni2+][NH3]6/[Ni(NH3)6]

Kd = 1/Kf = 1/ 2.0 × 10^8

Kd = 5.0 ×10^-9

Using an ICE chart;

Initial concentration:

[Ni(NH3)62+] = 0.00472

[Ni2+] = 0

[NH3] = 0.

Change in concentration:

[Ni(NH3)62+] = - x

[Ni2+] = + x

[NH3] = + 6x

Equilibrium concentration:

[ Ni(NH3)62+] = 0.00472 - x

[Ni2+] = x

[NH3] = 0.13298 + 6x

From the dissociation constant equation;

x(0.1330 + 6x)^6 / 0.00472 - x) = 5.0 ×10^-9

Assuming x is very small;

x( 0.13298)^6/ 0.00472 = 5.0 ×10^-9

x × 0.00117= 5.0 ×10^-9

x = 4.268 ×10^-6 M

Therefore, at equilibrium, the concentration of Ni2+ that remains is 4.268 ×10^-6 M

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Answer:

dinitrogen trioxide = N2O3

nitrogen monoxide =  NO

hydrochloric acid = HCl

chloric acid = HClO3

sulfuric acid = H2SO4

sulfurous acid = H2SO3

Answer:

Cold air surrounds food and slows the spoiling process

When 32.0 g of F₂ react with enough N₂, 39.86g of NF₃ are formed.

Stoichiometry is the study of the quantitative relationships or ratios between two or more substances undergoing a physical change or chemical change.

Let's consider the following balanced equation.

N₂ + 3 F₂ ⇒ 2 NF₃

To calculate the mass of NF₃ formed from 32.0 g of F₂, we need to consider the following relationships.

[tex]32.00gF_2 \frac{1molF_2}{38.00gF_2} \frac{2molNF_3}{3molF_2} \frac{71.00gNF_3}{1molNF_3} = 39.86gNF_3[/tex]

When 32.0 g of F₂ react with enough N₂, 39.86g of NF₃ are formed.

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Answer:

Reaction 1: -450 kJ/mol

Reaction 2: -81 kJ/mol

Explanation:

These were the correct answers on Edge, 2022. Hope it helps!

Answer:

-450 and -81 are correct

Explanation:

edge 2022

Answer:

liquid vibrate, move about, and slide past each other. solid vibrate (jiggle) but generally do not move from place to place.

Explanation:

Explanation:

this equation is balanced

if you look at it carefully

k=1

f=1

o=2

we do not have any opposing element

Answer:

this equation is balanced

if you look at it carefully

k=1

f=1

o=2

we do not have any opposing element

Answer:

A. dew forms from water vapor in the air

Explanation: As dew formation is spontaneous process, therefore, entropy of the universe will increase.

there are 4 properties of salt

1. The salt of a strong acid and a strong base is neutral

2. The salt of a strong acid and a weak base is acidic

3. The salt of a weak acid and a strong base is basic

4. Salt of a weak acid and a weak base depends on the value of the ionization constant of the acid and base

So the salt from strong acid + weak base is acidic

and salts of strong acids and weak bases (pH<7) or of strong bases and weak acids (pH>7) will be partially hydrolyzed

Answer:

6400 molecules / cm^3

Explanation:

10.6*10^-16 mol/L * 6.022*10^23 molecules/mol * 1 L / 1000 cm^3 * 1 / 100 L = 6400 molecules / cm^3

The "natural" equilibrium concentration of Nitric oxide in air in units of molecules/cm .0.062molecules/cm3

chemical equilibrium or equilibrium concentration is a state when the rate of forward reaction in a chemical reaction becomes equal to the rate of backward reaction. At the same time, there is no change in the products and reactants, and it seems that the reaction has stopped.

The equation for Beer's law is a straight line with the general form of y = mx +b. where the slope, m, is equal to εl. In this case, use the absorbance found for your unknown, along with the slope of your best fit line, to determine c, the concentration of the unknown solution.

Reversible reactions occur until equilibrium is established, meaning that they achieve a sort of balance between amounts of reactant and product. If the reactants and products are equal in energy, at equilibrium, they will have the same concentration.

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Answer:

when wood burns

(PLS MARK BRAINLIEST)   (hope it helps!)

Explanation: when wood burns, the mass of the soot, ashes, and gases equals the original mass of the charcoal and the oxygen when it first reacted. So the mass of the product equals the mass of the reactant

Initially, we will consider only solutions of a solid in ... (d) Calculate the volume (in mL) of 0.1065 M Sr(OH)2 required to titrate 25.00 mL of 0.2465 M.

:

Explanation:

The formula equation for the reaction between zinc sulfide and magnesium arsenate is

3ZnS + Mg₃(AsO₄)₂ → Zn₃(AsO₄)₂ + 3MgS

Chemical equations are representations of chemical reactions using symbols and formula of the reactants and products.

The reactants are located on the left side while the products are located on the right side.

Reactants —> Products

The balancing of chemical equations follows the law of conservation of matter which states that matter can neither be created nor destroyed during a chemical reaction but can be transferred from one form to another.

Zinc sulfide => ZnS

Magnesium arsenate => Mg₃(AsO₄)₂

Zinc arsenate => Zn₃(AsO₄)₂

Magnesium sulfide => MgS

Zinc sulfide + Magnesium arsenate → Zinc arsenate + Magnesium sulfide

3ZnS + Mg₃(AsO₄)₂ → Zn₃(AsO₄)₂ + 3MgS

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Answer: It is indeed A.Standard Solution.

Hope this helps you!

A water bath can be used to keep the temperature of the conical flask and its contents at a temperature .

This is a laboratory equipment which contains a heated source and  is used to incubate samples in water at a constant temperature over a period of time.

This is why water bath will be best used to keep the temperature of the conical flask and its contents at a temperature of 45 °C throughout the reaction.

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The relative atomic mass of the metal, M is calculated as 204.4amu.

The relative atomic mass of a isotopic element can be calculated by summing the abundance of each isotope in the element. That is;

(mass no of isotope 1 × % abundance) + (mass no of isotope 2 × % abundance)

According to this question, metal M has two isotopes with the following mass numbers and % abundance:

(30/100 × 203) + (70/100 × 205)

60.9 + 143.5 = 204.4

Therefore, the relative atomic mass of the metal, M is calculated as 204.4amu.

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Answer:

C)

Explanation:

Answer:

Is d PHIVOLCS

Explanation:

PHIVOLCS stands for Philippine Institute of Volcanology and Seimology.

This agency monitors the movements of the earth's crust and warns if there is any possibility of disaster such as volcanic, tsunami and earthquake.

To identify why a metal measurement was different in the experiments look for the variable that was different in the experiment and analyze how this change affected the results.

An experiment is a procedure that aims at probing or discovering something. For example, you can test if a plant grows faster/slower by using an experiment.

The most common cause for this situation is that one of the factors or variables is slightly different. For example, if I add 50mL of water to a plant rather than 20mL of water every day this might cause different results.

Based on this, if the metal content was different you should analyze if any of the factors changed in this experiment and find out how this change affected the general results.

Note: This question is incomplete because there is limited information about the experiment; due to this, I answered it based on general knowledge.

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The osmotic pressure at 65 °C of an aqueous solution containing 2.50 g of sucrose is 0.988 atm

Mole = mass /molar mass

Mole of sucrose = 2.5 / 342

Mole of sucrose = 0.0073 mole

Molarity =?

Molarity = mole / Volume

Molarity of sucrose = 0.0073 / 0.205

Molarity of sucrose = 0.0356 M

π = iMRT

π = 1 × 0.0356 × 0.0821 × 338

π = 0.988 atm

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