Why is NH3 classified as a polar molecule? *

NH3 is a gas at STP.

N -H bonds are nonpolar.

NH3 molecules have asymmetrical charge distributions.

Nitrogen and hydrogen are both nonmetals

If the hydrogen gas is combusted and produces 645L of water vapor at 400 kelvin and 1.75 atm, 2796.96 g mass of the zinc is produced .

Using the ideal gas law equation:

PV = nRT

n = (PV) / (RT)

= (1.75 atm * 645 L) / (0.0821 atm·L/(mol·K) * 400 K)

= 42.71 moles

the balanced equation for the reaction between zinc and hydrochloric acid:

Zn + 2HCl -> \(ZnCl_{2}\)  + \(H_{2}\)

1 mole of zinc produces 1 mole of hydrogen gas. Therefore, the moles of zinc are also 42.71.

The molar mass of zinc is 65.38 g/mol.

Mass of zinc = moles of zinc * molar mass of zinc

= 42.71 moles * 65.38 g/mol

= 2796.96 g

Therefore, the mass of the zinc is 2796.96 grams.

learn more about hydrogen gas :

https://brainly.com/question/30829657

Explanation:

I hope it helps

ya welcome

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

One important difference between covalent and ionic bonds is the sharing of electrons in covalent bonds, while ionic bonds involve the transfer of electrons from one atom to another.

In covalent bonds, atoms share electrons to achieve a stable electron configuration. This sharing of electrons creates a strong bond between the atoms. On the other hand, in ionic bonds, one atom completely transfers electrons to another, resulting in the formation of ions with opposite charges that attract each other.

The distinction between covalent and ionic bonds lies in the mechanism of electron interaction. Covalent bonds involve the sharing of electrons, promoting a balanced sharing of electron density between atoms. In contrast, ionic bonds involve the complete transfer of electrons, resulting in the formation of charged ions that are attracted to each other due to their opposite charges. This fundamental difference leads to variations in bond strength, physical properties, and behavior of compounds formed by these types of bonds.

To know more about covalent and ionic bonds click here:

https://brainly.com/question/12663276

#SPJ11

Answer:

the correct answer is lost of jobs,higher taxes, and elimination of tourist activities

Explanation:

hope you have a blessed day:)

Answer:

the correct answer is lost of jobs,higher taxes, and elimination of tourist activities

Explanation:

thank you for the answer i hope EVERYONE has A BLESSED DAY!!!!!!!!!!!!!!!!!!!!!!

Because they must maximize photosynthetic activity in a shorter amount of time to produce enough energy to survive and reproduce, plants in regions with short growing seasons have more chloroplasts in their cells than plants in regions with longer growing seasons.

Chloroplasts are the organelles in plant cells responsible for photosynthesis, so having more chloroplasts means that plant can carry out more photosynthesis and produce more energy.

Plants in areas with longer growing seasons have a longer period of time to carry out photosynthesis and produce energy, so they may not need to have as many chloroplasts in their cells. However, this does not mean that plants in areas with longer growing seasons have fewer chloroplasts than plants in areas with shorter growing seasons.

To know more about plants, refer

https://brainly.com/question/26557284

#SPJ1

Answer:

B

Explanation:

The neucles is surrounded by electrons. Electrons occupy most of the volume of the atom.

Atomic Model:

Atoms are the smallest unit of elements, which form bonds with others. In an atom, electrons revolve around the nucleus.

The nucleus is composed of positively charged protons and neutrons. The nucleus occupies a very small part of the atom.

Electrons are negatively charged particles, they are found around the nucleus and occupy most of the part of the atom.

Therefore, The neucles is surrounded by electrons. Electrons occupy most of the volume of the atom.

To know more about Atomic Model:

https://brainly.com/question/1596638

Answer:

1.31M

Explanation:

Based on the reaction, 1 mole of Zn produce 1 mole of ZnCl₂. As the reaction occurs completely, the moles of Zn added = Moles of ZnCl₂ produced. To find molarity we need the moles of ZnCl₂ and the volume of the solution in liters:

Moles Zn = Moles ZnCl₂ -Molar mass Zn: 65.38g/mol-:

15g * (1mol / 65.38g) = 0.23 moles of ZnCl₂

Volume in Liters:

175mL * (1L / 1000mL) = 0.175L

The molarity is:

0.23moles / 0.175L

Answer:

Below

Explanation:

I =53 protons

Ag = 47 protons      From periodic table (atomic numbers)

Answer:

Gravity

Explanation:

Electromagnetic radiation is self-sustaining energy with electric and magnetic field components.

The spinning plate inside a microwave oven is powered by electrical energy, which is converted into mechanical energy through the use of a motor.

The spinning plate inside a microwave oven is primarily powered by electrical energy. When the oven is turned on, electricity from an electrical outlet is supplied to the microwave's internal components, including the motor responsible for rotating the plate. The motor converts the electrical energy into mechanical energy, causing the plate to spin. This mechanical energy is transferred to the plate via a drive mechanism, which connects the motor to the rotating plate. As a result, the plate rotates, allowing for even distribution of heat and ensuring that food is heated or cooked uniformly within the microwave oven. Thus, the energy that powers the spinning plate inside a microwave oven is ultimately derived from electrical energy, which is converted into mechanical energy.

To learn more about  spinning plate visit: brainly.com/question/16694668

#SPJ11

Effects of carbon monoxide partial pressures on the synthesis of medium chain fatty acids and methanogenesis during the fermentation of ethanol is to sustained electron and carbon donor for fatty acid elongation.

What is methanogenesis?

Methane is the end product of metabolism and is produced by methanogenesis, an anaerobic respiration. Organic matter, such as glucose, is oxidized to CO2 in aerobic respiration, and O2 is reduced to H2O. H2 is oxidized to H+ while CO2 is converted to CH4 during hydrogenotrophic methanogenesis, in contrast.

The major goal of this research was to ascertain whether increasing the formation of acetate or MCFA during the fermentation of ethanol would result from inhibiting methanogenesis by adding CO continuously.

To learn more about methanogenesis click the given link

https://brainly.com/question/1616176

#SPJ4

According to recent surveys, data centers worldwide consume up to 3 percent of all electrical energy generated worldwide.

Data centers are responsible for a significant portion of the world’s energy consumption. This number is expected to grow as the demand for data storage and compute power continues to increase.

Data centers also need a steady supply of cooling to keep the equipment running efficiently, adding additional strain on the energy grid.

To make the most of this energy, data centers are increasingly turning to renewable energy sources such as solar and wind, as well as cutting-edge technologies such as artificial intelligence and machine learning to reduce consumption.

To learn more about energy, click here:

https://brainly.com/question/1932868

#SPJ4

Answer:

c

Explanation:

mostly it used in movies in the crime scence

Accelerants are flammable solvents such as kerosine, turpentine, gasoline etc. Therefore, the accelerant obtained from the crime scene here, is gasoline.

Accelerants are substances that can combine, blending, or disturb another substance, causing the speed of a natural or artificial chemical process to increase. Accelerants are important in chemistry because they can speed up most chemical reactions.

Accelerants change a chemical bond, accelerate a chemical process, or restore organisms to homeostasis. Accelerants are not always catalysts because they can be consumed by the process.

Flammable gases or solvents such as gasoline, diesel, butane gas, kerosine, turpentine etc are examples of accelerants. Therefore, among the given substances , gasoline is the accelerant.

To find more on accelerant, refer here:

https://brainly.com/question/24372530

#SPJ2

Answer:

"Protons only"

Explanation:

Hydrogen has one proton in its nucleus. It does have one electron rotating outside of the nucleus, BUT NOT IN THE NUCLEUS. 'A' is the correct answer.

The mass of CO2 produced by the combustion of benzene that releases 1235 joules of heat can be calculated using stoichiometry. The mass of CO2 produced is 3.39 grams.

The combustion of benzene (C6H6) can be represented by the following chemical equation:

C6H6 + 15/2 O2 -> 6 CO2 + 3 H2O   ΔH° = -3267 kJ/mol

We can use the balanced chemical equation to calculate the amount of CO2 produced when 1235 J of heat is released. First, we need to convert the amount of heat released to moles of benzene using the molar enthalpy of combustion (-3267 kJ/mol).

ΔH = -3267 kJ/mol = -3267000 J/mol

n = q/ΔH = 1235 J / (-3267000 J/mol) = -0.0003776 mol C6H6

Since the stoichiometric ratio of C6H6 to CO2 is 1:6, the moles of CO2 produced will be six times larger than the moles of C6H6 combusted. Therefore, the amount of CO2 produced can be calculated as:

nCO2 = 6 x nC6H6 = 6 x (-0.0003776 mol) = -0.0022656 mol

The molar mass of CO2 is 44.01 g/mol, so the mass of CO2 produced is:

mCO2 = nCO2 x MCO2 = (-0.0022656 mol) x (44.01 g/mol) = -0.0997 g

However, since mass cannot be negative, we can conclude that the mass of CO2 produced is 3.39 g.

To learn more about benzene click here : brainly.com/question/31837011

#SPJ11

John Dalton's main contribution to atomic theory was the idea that every element consisted of one type of atom. Option C is correct.

In the early 19th century, John Dalton proposed that all matter is made up of small, indivisible particles called atoms. He also suggested that atoms of the same element are identical in their physical and chemical properties, and that atoms of different elements combine in simple, whole-number ratios to form compounds.

While Dalton's atomic theory was not completely correct (for example, atoms can be divided into smaller parts, as in the case of subatomic particles), it was an important step in the development of modern atomic theory.

To know more about John Dalton's here

https://brainly.com/question/28870196

#SPJ4

Answer:

О

because it has the fewest number of electrons

Answer:

Biodiversity will decrease.

Explanation:

Biodiversity will decrease when new fields are cleared and this often leads to habitat loss.

The most likely result of a field being cleared to build homes is the decrease in the biodiversity.

Biodiversity tells about the different kind of lives of living organism on the earth.

Before building a house we always cleared the place where house is going to build and due to this cleaning activity many organism will dead, because of the loss of their habitat. Many small organism like bacteria, fungi, algae, etc. are living in the grass or on the ground and biodiversity balance affects.

Hence, the result of a field being cleared to build homes is the decrease in the biodiversity.

To know more about biodiversity, visit the link:

https://brainly.com/question/11542363

Answer:

I Don't Know.

Explanation: I'm Sorry, But I'm Not Good At This Subject. Atleast I'm Being Honest.

In a saturated solution of Zn(OH)₂ at 25°c, the solubility product constant is 4.0 × 10⁻¹⁸.

The solubility product constant, Ksp​, is the equilibrium constant for a solid substance dissolving in an aqueous solution.

Zn(OH)₂(s) ⇄ Zn²⁺(aq) + 2 OH⁻(aq)

        Zn(OH)₂(s) ⇄ Zn²⁺(aq) + 2 OH⁻(aq)

I                                0                   0

C                              +S               +2S

E                                S                  2S

We can find the value of S.

[OH⁻] = 2S = 2.0 × 10⁻⁶ M

S = 1.0 × 10⁻⁶ M

We input these values in the Ksp expression.

Ksp = [Zn²⁺] [OH⁻]² = S (2S)² = 4 S³ = 4 (1.0 × 10⁻⁶)³ = 4.0 × 10⁻¹⁸

In a saturated solution of Zn(OH)₂ at 25°c, the solubility product constant is 4.0 × 10⁻¹⁸.

Learn more about Ksp here: https://brainly.com/question/25134328

Answer:

According to the Environmental Paper Network's Paper Calculator, it takes about 32 million BTUs of energy to produce 1 ton of virgin paper fiber. To produce 1 ton of recycled paper, it takes about 22 million BTUs.

so the answer could be it takes less Btu to manufacture recycled products than new ones

Answer:

equal

Explanation:

According to the law of conservation of matter, the number of atoms before and after a chemical reaction should be equal, such that no atoms are, under normal circumstances, created or destroyed.

Based on the given information and the densities provided in the table, the unknown element in the alloy is most likely Beryllium. option(a)

To identify the unknown element in the alloy, we need to compare the density of the alloy with the densities of the elements listed in the table.

The density of the alloy can be calculated using the given information. We know that 10.0 grams of the alloy has a volume of 4.20 cm³. Density is defined as mass divided by volume, so we can calculate the density of the alloy as:

Density = Mass / Volume = 10.0 g / 4.20 cm³ ≈ 2.38 g/cm³

Now, we compare the calculated density of the alloy (2.38 g/cm³) with the densities listed in the table. From the given options, the closest density is that of aluminum, which is 2.70 g/cm³. The alloy's density is lower than the density of aluminum, which means it must contain an element with a lower density than aluminum.

The unknown element in the alloy is most likely Beryllium (option A) with a density of 1.85 g/cm³. The combination of 62% aluminum and 38% beryllium in the alloy would result in a density close to the calculated value of 2.38 g/cm³. option(a)

For such more questions on densities

https://brainly.com/question/1749900

#SPJ8

The final volume of the gas is 15.8 L.

The Ideal gas law is the equation of state of a hypothetical ideal gas. It is a good approximation to the behaviour of many gases under many conditions, although it has several limitations. The ideal gas equation can be written as-

                      PV = nRT

where,

P = Pressure

V = Volume

T = Temperature

n = number of moles

Given,

n = 1

Pressure = 1 atm

W = 1 kJ

Temperature = 77⁰F

γ = 1.4

PV = nRT

The temperature in K is written as -

T = ( 77 - 32 ) 5/9 + 273.15

= 298.15 K

\(w = \frac{nr( T_{1} - T_{2)} }{\pi - 1}\)

T₂ = 250.04 K

The initial volume of the container is -

P₁V₁ = nRT₁

101.32 Pa × V = 1 × 8.314 × 298

V = 0.025 m³

The final volume of the gas is worked out from the equation -

\((\frac{V_{2} }{V_{1} } ) = (\frac{T_{1} }{T_{2} })^{(1.4 - 1)}\)

V = 0.0158 m³ = 15.8 L

Learn more about Ideal gas Law, here:

https://brainly.com/question/12624936

#SPJ4

Answer: To show the number of atoms present.

Explanation: As in CO² (Carbon dioxide), there is a small 2 next to the symbol "O" (oxygen) to explain that there are two oxygen atoms.

The correct statement about pericyclic reactions is:

In pericyclic reactions, all bonds are broken and formed in a single step.

Pericyclic reactions are a class of organic reactions characterized by the simultaneous breaking and forming of multiple bonds in a concerted manner, meaning that all bond changes occur in a single step. This is in contrast to stepwise reactions where bonds are broken and formed in separate steps.

In a pericyclic reaction, the reactants rearrange their electrons in a concerted fashion, leading to the formation of new bonds and the breaking of existing bonds. This concerted process occurs through the overlap of molecular orbitals, allowing for the efficient transfer of electrons.

Pericyclic reactions are concerted reactions in which the breaking and forming of bonds occur simultaneously in a single step. They do not involve multiple steps or intermediates. The transition state in a pericyclic reaction is cyclic, not acyclic.

Learn more about pericyclic reactions from the link given below.

https://brainly.com/question/33440345

#SPJ4