a chemical system that results from a chemical reaction has two important components among others in a blend. the joint distribution describing the proportions x and y of these two components is give by f(x,y)

Answer:

C, A, A, B, B

Explanation:

Question 5: C. continental drift

Question 6: A. new rock forms

Question 7: A. happens at deep-ocean trenches

Question 8: B. convection currents in the mantle

Question 9: B. convergent boundary

The K value of 5.62 x 10-102A may be used to determine the hydroxide concentration of an equilibrium ammonia solution at a concentration of 0.10 molar. The equilibrium constant for the reaction of ammonia with water to produce ammonium and hydroxide ions is known as the K value.

The reaction's equation is as follows: NH3 + H2O -> NH4+ + OH- This equation is used to determine the K value: K = [NH3][NH4+][OH-] The K value may be modified to get the hydroxide concentration .

Since the ammonia concentration is 0.10 molar: [OH-] = K x [NH3] = 5.62 x 10-102A x 0.10 = 3.17 x 10-12 molar As a result, the hydroxide concentration of an equilibrium ammonia solution at 0.10 molar is 3.17 x 10-12 molar.

Learn more about equilibrium   at:

https://brainly.com/question/30694482

#SPJ1

1. The creature is the Porcupine

2. He lived in Sri Lanka

3. The temple in Manish Gandir

4. It is in the excited state

5. Carbon can share four electrons

6. Alcohol is soluble in water.

Nascent hydrogen is the term used to describe hydrogen atoms or molecules that are created during specific chemical reactions and are in a highly reactive condition. The word "nascent" refers to something that is new or just created, implying that the hydrogen is in a highly reactive state right away.

Nascent hydrogen is often produced by processes like the electrolysis of water or the interaction of a metal with an acid.

Learn more about nascent hydrogen:https://brainly.com/question/28227118

#SPJ1

Ionic bonds are formed by potassium iodide (KI). Iodine and potassium have highly dissimilar electronegativities. Since ionic bonds are formed between atoms with a significant difference, the two would join together.

A substance with the formula Na2S N a 2 S is sodium sulfide. This is an ionic compound since it consists of a metal and a non-metal.

covalent fusion. The creation of ions by the passage of electrons results in the formation of ionic compounds like sodium chloride (NaCl). Ionic bonds are created when ions interact electrostatically.

To know more about Potassium Iodide visit:

https://brainly.com/question/28099104

#SPJ4

The mass of iron formed when 725 kJ of heat is released in the thermite reaction is approximately 95 g. The thermite reaction is a highly exothermic chemical reaction that involves the reaction of a metal oxide with a metal.


To determine the mass of iron formed when 725 kJ of heat is released in the thermite reaction, we can use the given enthalpy change (ΔH) and apply the concept of stoichiometry.

The balanced equation for the thermite reaction is:

2Al(s) + Fe2O3(s) → 2Fe(s) + Al2O3(s)

The enthalpy change (ΔH) for the reaction is -850 kJ, indicating that it is highly exothermic.

Using the stoichiometry of the reaction, we can set up a proportion to find the mass of iron formed:

(725 kJ / -850 kJ) = (x g Fe / 2 mol Fe)

Solving for x, the mass of iron formed, we find:

x = (725 kJ / -850 kJ) * 2 mol Fe * molar mass of Fe

Calculating the molar mass of Fe (iron) as 55.845 g/mol, we can substitute the values and solve for x:

x ≈ 95 g

Therefore, the mass of iron formed when 725 kJ of heat is released in the thermite reaction is approximately 95 g.

To know more about thermite reaction, click here, https://brainly.com/question/15582115

#SPJ11

The ratio of 32 to 16 is:

Hence, 2:1 will be the ratio.

Hoped this helped.

\(BrainiacUser1357\)

According to the electronic configuration, there are 1,2,3,5 sublevels in first,second,third,fifth energy level respectively,3 f sublevel does not exist as it has only 3 energy levels.

Electrons present in an atom revolve in different orbits which are stationary states and are also called as energy levels. The energy levels are numbered as integers which are also called as principal quantum numbers.

Energy of the stationary state is given as E= -R

1/n² where R

is the Rydberg's constant. When an electron is excited, and it moves from lower to higher energy levels there is absorption of energy, while when it moves from higher energy level to lower energy level it radiates or gives out energy in the form of radiation.

They can also be defined as the distances between electron and nucleus of an atom . Electrons present in K energy level have least energy .Energy level diagrams are studied to understand nature of bonding , placement of electrons in orbits and and elemental behavior under certain conditions.

Learn more about energy level,here:

https://brainly.com/question/29736874

#SPJ9

Answer

Explanation

Given that:

The mass of pure silver needed = 800 g

Mass of zinc = 300 g

Mass of silver nitrate = 600 g

What to find:

Will the mass of zinc and silver nitrate be able to make 800 g of pure silver.

Step-by-step solution:

Step 1: Write the balanced equation for the reaction.

Zn + 2AgNO₃ → 2Ag + Zn(NO₃)₂

Step 2: Determine the moles of the reactants.

Using the mole formula, the moles of the reactants will be:

Step 3: Determine the moles of pure silver produced.

Using the mole ratio of Zn to AgNO₃ in the equation and the moles in step 2, we

Answer:

The pOH of the bleach sample is 1.7.

Explanation:

The pH and pOH are related by the equation:

pH + pOH = 14

To find the pOH of the bleach sample, we can use the given pH value and solve for pOH:

pH + pOH = 14

pOH = 14 - pH

pOH = 14 - 12.3

pOH = 1.7

Therefore, the pOH of the bleach sample is 1.7.

Answer:

Atomic # is 9

protons 9

neutrons: 10

electrons: 9

mass :18.n u

energy shells: 18

The process of passing electricity through a substance to separate molecules is called electrolysis. Option C is correct.

Electrolysis is a process in which an electric current is passed through a conducting medium (such as a liquid or a molten electrolyte) in order to bring about a chemical change. It involves the use of electrical energy to drive a non-spontaneous redox reaction, causing the decomposition or transformation of substances at the electrodes.

Electrolysis has a wide range of applications in various industries. For example, it is used in the extraction of metals from their ores, such as the production of aluminum from bauxite, or the extraction of copper from copper ores.

Electrolysis plays a crucial role in many technological advancements and industrial processes, making it an important area of study in the field of electrochemistry. It has widespread applications in fields such as metallurgy, chemical industry, energy production, and environmental remediation.

Hence, C. is the correct option.

To know more about Electrolysis here

https://brainly.com/question/12994141

#SPJ1

The remaining acetanilide when the solution was cooled to 25°C is 13.513 mg.

What happens in the crystallization process?

The solid compound is dissolved in the solvent at elevated temperatures during the crystallization process, and the crystallized product is obtained by slowly cooling the solution.

Given that,

The solubility of acetanilide at 100°C is 1 g per 10 mL of water. Thus, to dissolve 250 mg of acetanilide at a high temperature, that is 100 °C, we need 2.5 mL of water. At 25°C after the re-crystallization there will be some dissolved acetanilide, which can be calculated as- 185mL of water is needed to dissolve 1g or 1000mg of acetanilide at 25°C. Thus, in 2.5 mL of water, there will be

               (2.5×1000)/185 = 13.5135 mg of acetanilide.

To know more about the crystallization process, visit the given link:

https://brainly.com/question/15020507

#SPJ4

The values of ∆S for the water, the surroundings, and the universe for the evaporation of water from an open pan at 25°C are  positive, negative, positive.

The described system can be expressed as:

H₂O(l) ---------> H₂O(g)

Gases have a higher entropy than liquids, which in turn has a higher entropy than solids. The entropy of water increases when it transforms from a liquid to a gas (∆Swater is positive).

Endothermic phase changes need the supply of thermal energy from the environment, which means that the environment's entropy must drop (∆Ssurr must be negative).

The Second Law of Thermodynamics states that if a process is spontaneous—which water evaporation is—then ∆Suniverse > 0 must exist. (This implies that the liquid water's entropy growth must be greater than the environment's entropy drop.)

To know more about thermodynamics, click below:

https://brainly.com/question/13059309

#SPJ4

Answer:

a) Balanced  equation:

An  equation is called balanced if there are same number and same type of atom on both sides of the equation.

b)Reason:

2KClO3--------2KCl + 3O2

Consider this equation in the reactants there are 2KClO3  and in the product there are 2KCl+3O2 . So reactants =products which is a case of balanced chemical equation .

Explanation:

Answer:

224.33

Explanation:

Answer:

224.33

Explanation:

The claim that vinyl gloves have a higher leak rate than latex gloves is supported by the study at a significance level of 0.005.

To determine if vinyl gloves have a higher leak rate than latex gloves, we can conduct a hypothesis test.

The z-value is calculated as:

z = (p₁ - p₂) / √((p₁(1 - p₁) / n₁) + (p₂(1 - p₂) / n₂))

where p₁ and p₂ are the sample proportions, and n₁ and n₂ are the sample sizes.

Certainly! Let's calculate the z-value to determine if vinyl gloves have a higher leak rate than latex gloves.

For vinyl gloves:

Sample size (n₁) = 240

Leaking gloves (x₁) = 0.63 * 240 = 151.2 (approximated to 151)

For latex gloves:

Sample size (n₂) = 240

Leaking gloves (x₂) = 0.07 * 240 = 16.8 (approximated to 17)

We will calculate the z-value using the formula:

z = (p₁ - p₂) / √((p₁(1 - p₁) / n₁) + (p₂(1 - p₂) / n₂))

where p₁ and p₂ are the sample proportions.

p₁ = x₁ / n₁ = 151 / 240 ≈ 0.629

p₂ = x₂ / n₂ = 17 / 240 ≈ 0.071

Calculating the z-value:

z = (0.629 - 0.071) / √((0.629 * (1 - 0.629) / 240) + (0.071 * (1 - 0.071) / 240))

z ≈ 13.239

The calculated z-value is approximately 13.239. To determine if the claim is supported, we compare this value to the critical z-value for a one-tailed test at a significance level of 0.005.

learn more about significance level Here:

https://brainly.com/question/30766149

#SPJ4

The entropy of a system can be defined as the measure of its disorder or randomness. In chemistry, entropy is affected by various factors such as the number of particles, temperature, pressure, and molecular complexity.

Ethylene (C2H4) and ethane (C2H6) are two organic compounds that have similar molecular structures but differ in the arrangement of their atoms. To determine which of these two compounds would have a greater entropy, we need to consider their molecular complexity. Ethylene has a double bond between its two carbon atoms, which makes it more reactive and less stable than ethane, which only has single bonds between its carbon atoms. The double bond in ethylene allows for greater freedom of movement among its atoms, leading to a more disordered or random state, thus resulting in a greater entropy value.

Additionally, the presence of double bonds increases the number of vibrational degrees of freedom, which contributes to an increase in entropy. Therefore, ethylene, with its double bond and greater vibrational degrees of freedom, would have a higher entropy value than ethane.

In conclusion, ethylene would have a greater entropy value than ethane due to its greater molecular complexity, including the presence of a double bond and more vibrational degrees of freedom.

To know more about entropy

https://brainly.com/question/419265

#SPJ11

Essential for ALL multimedia projects:

Essential for SOME multimedia projects:

The table presents a list of multimedia devices and applications and identifies whether they are essential for all multimedia projects or just for some.

Video editing software: This is an essential device for all multimedia projects because it allows users to edit and manipulate video footage, audio tracks, and other multimedia elements.

Powerful graphics card: This is an essential device for all multimedia projects because it enables users to process high-quality images, videos, and animations with speed and efficiency.

Lastly, High-resolution monitor: This is an essential device for all multimedia projects because it provides a clear and detailed display of multimedia content, allowing users to view and edit their work more effectively.

Learn more about software from

https://brainly.com/question/28224061

#SPJ1

The molarity of the KCl solution is 4.04 moles/ litre

Molarity (M), which is determined by dividing the solute's mass in moles by the volume of the solution in liters, is the most widely used unit to express solution concentration: liters of solution/moles of solute equals M. One liter of a solution with a 1.00 molar concentration (1.00 M) contains 1.00 moles of solute.

The amount of a substance in a specific volume of solution is known as its molarity (M). The number of moles of a solute per liter of a solution is known as molarity. The molar concentration of a solution is another name for molarity.

Molarity = no. of moles/ volume of solution

Volume of KCl solution given is 0.25 L

molarity = 1.01 / 0.25

molarity = 4.04 moles/ litre

TO know more about molarity you may visit the link:

https://brainly.com/question/8732513

#SPJ4

Ethanol use was effect the shortage of corn available on those time because of corn is an ingredient to produce the ethanol. Hence, ethanol use was aligned with the rarity of corn availability on those time. the more ethanol was used, the more rare corn availability for consumer.  

The drought is a condition where the area cant provide enough water supply for a long. Agriculture sector is the most affected sector when the drought occur. The drought cause crop failure, and this condition create domino effect on another sector such as food price get more expensive, and because of food get more expensive, buying power getting low cause small business out of business.

Learn more about drought here

https://brainly.com/question/12686086

#SPJ4

The formula of a compound having largely polar covalent bonds is SrCl2, also known as strontium chloride.

Polar covalent bonds occur when two atoms have a difference in their electronegativity, causing the electrons in the bond to be shared unequally. Strontium chloride is a simple binary ionic compound composed of strontium and chlorine.

Strontium is an alkaline earth metal with an electronegativity of 0.9, and chlorine has an electronegativity of 3.0. This large difference in electronegativity between the two elements causes the electrons to be shared unequally, forming a polar covalent bond.

This polar covalent bond gives the SrCl2 compound largely polar covalent bonds. Polar covalent bonds are weaker than ionic bonds, but they are still strong enough to form a stable compound.

Covalent bonds can be classified further as either polar or non-polar, depending on the difference in electronegativity between the two atoms. Polar covalent bonds occur when the atoms have a large difference in their electronegativity, while non-polar covalent bonds occur when there is a small difference in electronegativity.

Strontium chloride is an example of a compound with largely polar covalent bonds due to the large difference in electronegativity between the two elements.

Know more about strontium chloride here

https://brainly.com/question/2507300#

#SPJ11

Answer:

answer is 2 I think I'm correct sorry if I'm not

Na₃PO₄ will dissociate into the largest number of ions in solution.

A dissociation reaction is defined as a reaction where larger molecules dissociates to form new molecules by the use of some energy. The required energy is found in the form of heat or electricity after the reaction. Dissociation reaction is reversible in nature, where a single reactant will break down to form two or more products and vice versa.

The formula for a dissociation reaction is follows as: AB → A + B.

When Na₃PO₄ is dissolved in water, it is broken down into its constituent ions. Constituent ions of Na₃PO₄ are sodium ions and phosphate ions.

Conclusively, The chemical equation for showing the change is given as:

Na₃PO₄(s) → 3Na+(aq) + PO₃⁻⁴(aq)

Learn more about dissociation reaction from the link given below.

https://brainly.com/question/14748642

#SPJ4

Answer:

i) increase

ii) decrease

iii) remain the same

iv) No, because it dissociates completely.

Explanation:

On a 10-fold dilution of a weak acid, the pH will increase because the concentration of hydrogen ions will decrease thereby increasing the pH to close to that of water.

On a 10-fold dilution of a weak base, the pH will decrease due to the removal of hydroxide ions from the solution. This results in the solution having a H closer to that of water.

If one adds a very small amount of strong base to a buffered solution, the pH will remain constant because a buffer solution acts to withstand any change to its pH on the addition of small quantities of either an acid or a base.

A buffer solution cannot be made with a strong acid because thy undergo complete dissociation. Therefore, any small addition of base or acid will result in very large changes in the pH of the solution. A buffer solution is made with a weak acid and its conjugate base or a weak base and its conjugate acid.

Answer:

The amount of current is the same at every point in a series circuit.

All of the parts of a series circuit—power source, wires, and devices—are connected along the same pathway

Explanation:

Takealot excels at providing convenience, extensive product selection, competitive pricing, and a seamless online shopping experience as its value proposition for consumers.

Convenience is a key aspect of Takealot's value proposition. As an online retailer, Takealot offers the convenience of 24/7 shopping from the comfort of one's own home.

Customers can browse a wide range of products, place orders, and have them delivered directly to their doorstep.

Takealot also offers an extensive product selection, spanning various categories such as electronics, fashion, home goods, and more.

This breadth of choices allows consumers to find and compare different products all in one place, saving them time and effort compared to traditional retailers with limited inventory.

Competitive pricing is another area where Takealot excels. By operating online, the company has lower overhead costs compared to brick-and-mortar retailers, enabling them to offer competitive prices and discounts to their customers.

The seamless online shopping experience provided by Takealot includes user-friendly interfaces, secure payment options, and efficient delivery services. This enhances customer satisfaction and convenience.

In contrast, traditional non-online retailers typically have limited operating hours, smaller product selections, and may not offer the same level of convenience and competitive pricing.

They often require customers to physically visit their stores, which can be time-consuming and may not provide the same level of ease and accessibility as online platforms like Takealot.

To know more about "Customer satisfaction " refer here:

https://brainly.com/question/32142022#

#SPJ11

Answer:

detail is given below.

Explanation:

The charged particles of nucleus are protons while neutrons are neutral having no charge.

We know that an atom consist of electrons, protons and neutrons. Neutrons and protons are present inside the nucleus while electrons are present out side the nucleus.

Electron has a negative charge and is written as e⁻. The mass of electron is 9.10938356×10⁻³¹ Kg . While mass of proton and neutron is 1.672623×10⁻²⁷Kg and 1.674929×10⁻²⁷ Kg respectively.

Symbol of proton= P⁺  

Symbol of neutron= n⁰  

The number of electron or number of protons are called atomic number while mass number of an atom is sum of protons and neutrons.

one proton contribute 1 amu to the total weight. There are 20 protons and 20 neutrons in Ca thus its atomic mass is 40 amu.

While the atomic number is 20.