Which statement best describes how electrons fill orbitals in the periodic table?
O Electrons fill orbitals in order of their increasing energy from left to right.
O Electrons fill orbitals in order of their increasing energy from right to left.
O Elements fill orbitals in order of increasing energy from top to bottom in each group.
O Elements fill orbitals in order of increasing energy from bottom to top in each group.

Answer: EADCBCEDBA

Explanation:

1.  E - Moderately to very polar covalent

        Electronegativity (χ) = .84

2. A - Nonpolar covalent

        χ = 0 - There is no electronegativity difference

3. D - Ionic

        χ = 3 - The electronegativity is greater than 2

4. C - Very polar covalent

          χ = 1.55

5. B - Moderately polar covalent

         χ = .76

6. C - Very polar covalent

         χ = 1.4

7. E - Moderately to very polar covalent

        χ=.89

8. D - Ionic

       χ= 2.46

9. B - Moderately polar covalent

       χ = .82

10. A- Nonpolar covalent

      χ = 0 - There is no electronegativity difference

hope this helps :3

The balanced chemical equation for the combustion of methane is:

CH4 + 2O2 → CO2 + 2H2O

From the equation, we can see that 1 mole of methane reacts with 2 moles of oxygen to produce 1 mole of carbon dioxide and 2 moles of water.

The molar mass of methane (CH4) is:

(1 x 12.01 g/mol) + (4 x 1.01 g/mol) = 16.05 g/mol

To calculate the amount of oxygen required for the combustion of 128g of methane, we need to first convert the mass of methane to moles:

128 g CH4 ÷ 16.05 g/mol = 7.98 mol CH4

According to the stoichiometry of the balanced equation, 2 moles of oxygen are required for every 1 mole of methane that reacts. Therefore, we need:

7.98 mol CH4 x (2 mol O2 / 1 mol CH4) = 15.96 mol O2

Finally, we can convert the moles of oxygen to grams:

15.96 mol O2 x 32.00 g/mol = 511.2 g O2

Therefore, 511.2 g of oxygen are required for the complete combustion of 128g of methane.

Answer:

increase the amount

Explanation:

jus took the test

The pressure is dependent on the area over which the force is acting, the pressure can be increased or decreased without any change in the force. Here on increasing the pressure, the amount of gas on the solution increases. The correct option is A.

The force which is applied perpendicular to the surface of an object per unit area over which the force is distributed is known as the pressure. In the field of chemistry, the pressure arises due to the movement of molecules and their collision with one another and the walls of the vessel.

All gases exert pressure, it is one of the fundamental measurable quantities of this phase of matter. Even our atmosphere exerts pressure. The pressure of the atmosphere is 101,325 Pa. The SI unit of pressure is Pascal.

Here when Naomi has increased the pressure on a solution of liquid and gas in a closed container, the amount of gas also increases.

Thus the correct option is A.

To know more about pressure, visit;

https://brainly.com/question/29341536

#SPJ7

Energy levels are the fixed distances of electrons from the nucleus, sublevel is a level that is lower than another level whereas an orbital is the most likely location of an electron present around an atom.

The sublevels contain carry orbitals. Orbitals are spaces that have a high prospect of containing an electron. An orbital is an area or location where the electrons are present. There can be two electrons in one orbital extreme. Each energy level or shell is divided into many sublevels. Both sublevel and subshell are used interchangeably. The sublevels are constituted by the letters s, p, d, and f. Each energy level has certain sub-levels. Therefore, these circular orbits are called as energy levels or energy shells. The orbits of an atom act for the energy levels of the electrons in it.

So we can conclude that Orbitals and sublevels are both concepts used in chemistry to describe the energy states of electrons.

Learn more about sublevels here: https://brainly.com/question/28581679

#SPJ1

Answer:

eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

Explanation:

Explanation:

The density of sea otters is directly proportional to the kelp abundance. The higher number of sea otters will decrease the population of sea urchins, and the smaller number of sea urchins means an increased number of kelps. That's why in the graph, increasing otter density also led to increased kelp abundance.

Answer:

Explanation: when electric current is passed through water, water dissociates into hydrogen and oxygen. Hydrogen is deposited over negative pole and oxygen is deposited over positive pole. Deposition of hydrogen and oxygen at different poles is visible in the form of bubbles.

The solubility of oxygen in water can be increased by increasing the partial pressure of oxygen (p0) above the water surface.

This means that option (a) is correct - increasing p0 while keeping pext constant will result in more oxygen molecules being present at the water's surface, leading to more oxygen dissolving in the water. However, it's worth noting that increasing p0 too much can also lead to saturation and diminishing returns on solubility. It's also important to maintain a constant pext in order to keep the conditions consistent.

Options (b) and (d) are incorrect because decreasing p0 or pext would decrease the amount of oxygen present at the surface, leading to less oxygen dissolving in the water. Option (c) is also incorrect because increasing pext would not directly affect the solubility of oxygen in the water.

To know more about Oxygen  visit :

https://brainly.com/question/13905823

#SPJ11

Answer:

Physical property: Any characteristic that can be determined without changing the substance's chemical identity. Chemical property: Any characteristic that can be determined only by changing a substance's molecular structure.

Explanation:

Physical properties are something that is reverseable or has no change visible. Chemical properties are something that is NOT reverseable.

Chemical: Gas forming or Color Changing. (ETC.)

Answer:

physical property means any characteristic that can be determined without changing the substance's chemical identity. chemical property is any characteristic that can be determined only by changing a substance's molecular structure.

out of my textbook hope it helps

The order of strongest to weakest bond type:

Ionic bond > Polar covalent bond > non polar covalent bond

Explanation:

Strong electrostatic force> temporary attractive force> no force of attraction

Ionic bond > Polar covalent bond > non polar covalent bond

So, from this, we can conclude that the order of ionic bond is the strongest followed by a polar covalent bond and then a nonpolar covalent bond.

Learn more about types of chemical bonds here:

brainly.com/question/1802971?referrer=searchResults

brainly.com/question/820400?referrer=searchResults

Answer:

The reaction rate in mol/sec is 0.005.

Explanation:

To determine the reaction rate in mol/sec, you need to first determine the number of moles of H₂ gas produced in the reaction. The volume of a gas at STP (standard temperature and pressure) is directly proportional to the number of moles of the gas, so you can use the volume of H₂ gas produced to calculate the number of moles.

At STP, 1 mole of a gas occupies a volume of 22.4 L. Therefore, the number of moles of H₂ gas produced in the reaction can be calculated as follows:

moles H₂ = 4.48 L / 22.4 L/mol = 0.2 mol

To determine the reaction rate in mol/sec, you need to divide the number of moles of H₂ gas produced by the time it took for the reaction to occur:

reaction rate (mol/sec) = 0.2 mol / 40 sec = 0.005 mol/sec

So, the reaction rate in mol/sec is 0.005.

Copper has the highest conductivity of any metal used in electronics. The statement is false.

Silver is the element that conducts electricity the best, followed by copper and gold.

The earth's most conductive metal is by far silver. Silver only has one valence electron, which explains this. This one electron can also go about freely and encounter little opposition. As a result, some of the metals with this particular property are silver and copper.

Silver is the metal with the highest thermal and electrical conductivity because of its distinctive crystal structure and lone valence electron.

Since copper is the non-precious metal with the highest conductivity, it has a higher electrical current carrying capacity than other non-precious metals. The strength of the metal rises when tin, magnesium, chromium, iron, or zirconium are added to copper to create alloys, but its conductivity decreases.

To know about electrical conductivity

https://brainly.com/question/13322537

#SPJ4

Answer:

Gap 1, S-Phase, Gap 2, Prophase, Metaphase, Anaphase, Telophase, Cytokinesis

Hope this helps.

Drip irrigation is the ideal irrigation system for use with vegetable gardens, flowers, trees, and other watering needs. A drip irrigation system for gardens helps you save time, money, and water.

In those pots lacking drainage holes, a layer of stones is used as a form of drainage layer. By using this method, surplus water might go from the soil and, consequently, the roots of your plant, into the area with the pebbles.

A drip system that has been set up correctly will operate automatically at a certain time of day for a specific duration.

Therefore, a) use the water to wash the car. b) Often used for transpiration to create a suction force, creating a transpiration pull. c) Ayan values water, conserving it and giving the most efficient and optimum function.

Learn more about plant here:

https://brainly.com/question/71813

#SPJ2

Answer: Competitive athletes at all levels – and even those who are in it for personal health – are driven by the Olympic motto Citius, Altius, Fortius – faster, higher stronger. The big question is how do they get there?

Explanation: The class is looking at these issues through a variety of eras in sports history from the first modern Olympic Games in 1896 to the Winter Olympic Games taking place this month in Pyeongchang, South Korea. “There are times when (illegal performance enhancement) has crept into the Olympics,” Roerdink said, citing the current ban handed down in December to Russian athletes accused of doping. Athletes with no previous drug violations were allowed to compete under the neutral “Olympic Athlete from Russia” flag. The class also will study Major League Baseball’s steroid era and examine the East German sports machine of the 1970s, among other timely topics. “I really wanted to share my passion for unique sporting events where we see the spotlight on the people who represent us, their passion, even the political bent to it, and figure out how chemistry comes into it,” Roerdink said. “The ultimate goal of the course is a better appreciation of doing sports for the sport of it.”

Note: I know that this is a long answer, so sorry, and this is the help from me. (Hope this helps you)

Learn More:

www.heidelberg.edu/news/2018/whats-behind-athletic-competition-chemistry

Answer:The pOH of the solution is 9.914

Explanation:

pH is given as the negative logarithm (base 10) of the hydronium ion concentration [H₃O⁺] that is

pH= - log [H₃O⁺]

Since we are given  [H₃O⁺]=8.2 x 10⁻⁵,

pH=- log (8.2 x 10⁻⁵)

pH= 4.086

The pOH gives s the measurement of the concentration of OH− ions, Hence,

pH + pOH= 14

from the above calculation, we got  pH=4.086

So

4.086 + pOH=14

pOH= 14 - 4.086

pOH= 9.914

The pOH of the solution is 9.914

Answer:

The preceding temperature is equivalent to approximately 9.6 K => -263.5 °C

Explanation:

Given the provided problem, the formula may be substituted by the corresponding values:

Pressure (P)= 932 mmHg ==> 1.2 atm

Volume (V) = 2,300 mL ==> 2.31 L

Moles (n) = 3.51 moles ==> 3.51 mol

Proportional constant of ideal gas constant: (R) = 0.08206

Therefore, we can equate the following:

T= (PV)

     nR

T= (1.2 atm · 2.31 L)

   (3.51 mol · 0.08206)

T= 9.6 K ==> -263.5 °C

Thus, the cumulative temperature given the substituents/substance is equivalent to -263.5 °C.      

Answer:

1. 2Ca + N\(_{2}\) → 2CaN

2. 4Li + O\(_{2}\) → 2Li\(_{2}\)O

3. 2KCl + BaF\(_2\) → 2KF + BaCl\(_2\)

4. CH\(_4\) + 2O\(_2\) → CO\(_2\) + 2H\(_2\)O

Be sure to balance the number of atoms on both sides of each equation only by adding coefficients to the compounds!!!! Those without a coefficient are meant to have a coefficient of 1.

The ideal gas law, which relates the pressure, volume, temperature, and number of moles of an ideal gas, can be applied to real-world situations. By considering a specific scenario and applying the ideal gas law, we can analyze the behavior of gases and make predictions about their properties.

Let's consider a situation where a scuba diver is exploring underwater at a depth of 30 meters. We can apply the ideal gas law, specifically the form known as Boyle's law, which states that the pressure and volume of a gas are inversely proportional at constant temperature.

Question: How does the pressure of the gas in the scuba tank change as the diver descends to a depth of 30 meters, assuming the temperature remains constant?

To answer this question, we can use the ideal gas law equation PV = nRT, where P is the pressure, V is the volume, n is the number of moles of gas, R is the ideal gas constant, and T is the temperature. By keeping the temperature constant, we can observe the relationship between pressure and volume as the diver descends and calculate the change in pressure based on the change in volume.

To learn more about Boyle's law click here:

brainly.com/question/30367133

#SPJ11

Answer:

B.) SnO and SnO₂

Explanation:

Tin can either exist as Sn²⁺ or Sn⁴⁺ when ionized. Oxygen always exists as O²⁻ when ionized.

When ions combine, sometimes there needs to be different amounts of each ion in order to create an overall charge of 0. In one combination of the ions (Sn²⁺ and O²⁻), there only needs to be one atom of each ion. In another combination (Sn⁴⁺ and O²⁻), you need to have more anions to balance the high positive charge of the cation.

SnO
-----> Sn²⁺ and O²⁻

-----> +2 + (-2) = 0

SnO₂

-----> Sn⁴⁺ and O²⁻

-----> +4 + (-2) + (-2) = 0

The emf generated by the cell when [Ni2+] = 0.100 M and [Zn2+] = 2.25 M is approximately +0.40 V.

To calculate the emf generated by the cell, we can use the Nernst equation, which relates the cell potential to the concentrations of the species involved. The Nernst equation is given by:

Ecell = E°cell - (RT / nF) * ln(Q)

Where:

Ecell is the cell potential

E°cell is the standard cell potential

R is the gas constant (8.314 J/(mol·K))

T is the temperature in Kelvin

n is the number of moles of electrons transferred in the balanced equation

F is the Faraday constant (96,485 C/mol)

Q is the reaction quotient, which is the ratio of product concentrations to reactant concentrations raised to their stoichiometric coefficients.

In this case, the balanced equation for the cell reaction is:

Zn (s) + Ni2+ (aq) → Zn2+ (aq) + Ni (s)

The number of moles of electrons transferred (n) in this equation is 2, as indicated by the stoichiometric coefficients.

Given:

E°cell = +0.48 V

[Ni2+] = 0.100 M

[Zn2+] = 2.25 M

Plugging in the values into the Nernst equation, we can calculate the emf generated by the cell:

Ecell = +0.48 V - (0.0257 V) * ln((2.25) / (0.100)^2)

Ecell = +0.48 V - (0.0257 V) * ln(22.5)

Ecell ≈ +0.48 V - (0.0257 V) * 3.113

Ecell ≈ +0.48 V - 0.080 V

Ecell ≈ +0.40 V

Know more about emf here:

https://brainly.com/question/14263861

#SPJ11

The specific heat capacity of a substance is the amount of heat needed to elevate it by 1 degree kelvin per gram. The easier it is for something to heat up, then, the smaller the heat capacity. We would suppose that a cook in a hurry would want a pan that heats up more quickly and would choose one with a lesser heat capacity.

0.385 for copper and 0.900 for aluminum.

Despite using non-SI units, we can still compare using it. It is obvious to him that copper has a lower specific heat, so he will pick that.

In case you're curious, you can also approach this issue from the perspective of heat conduction. To do this, look up the thermal conductivities of each material, and then apply Fourier's rule of heat conduction to determine that Copper would be best.

To know more about specific heat visit:-

https://brainly.com/question/11297584

#SPJ1

Hello! :)

\(\large\boxed{1s^{2}2s^{2}2p^{6}3s^{2}3p^{5}}\)

Chlorine is a halogen located in group 7A and period 3 of the periodic table.

We can write the electron configuration of this element. Since it is in period 3, the highest configuration level will be at 3.

Chlorine is also located in the p block (nonmetal) section of the table, so the final part of the written configuration will involve "3p".

Recall that:

S block: up to 2 electrons

P block: up to 6 electrons

Chlorine has 17 electrons

Fill in the order of s block to p block. The first level only goes up to an s block. The configuration should sum up to 17 total electrons in total.

We can write the configuration as:

\(1s^{2}2s^{2}2p^{6}3s^{2}3p^{5}\)

Answer:

Atoms of two different elements must have different atomic numbers.

Explanation:

A catalyst is a chemical that can be included in a reaction to speed up the process without being consumed. Typically, catalysts shorten the activation energy of a process or alter its mechanism.

By offering a different pathway with lower activation energy, a catalyst accelerates the reaction both forward and backward. More reactants can easily pass the energy barrier if the activation energy is decreased. As a result, the rate of reaction rises. A catalyst is a material that speeds up the rate of reaction by increasing the free energy change in the process. However, because it is not consumed by the reaction, a catalyst can be chemically retrieved unaltered after having been used to accelerate or catalyze a reaction.

Learn more about activation energy here-

https://brainly.com/question/28384644

#SPJ4

If 89.5 grams of silver is produced, 105.45 grams of Cu reacted.

The Chemical equation is

Cu + 2AgNO₃ → Cu(NO₃)₂ + 2Ag

The equation is balanced,

89.5 grams of Silver is produced in the reaction.

It is asked that how much Cu will be produced.

The amount of Copper can be calculated by using mole concept,

From the reaction,

When 1 moles of Copper Reacts, 2 moles of Ag are formed.

So, we can say,

Mole of Cu (n) = 2 x Moles of Ag

Mole of a compound can be found by using the formula,

Moles = Given mass of compound/Molar mass of the compound

So,

n = 2 x 89.5/107.87  moles

n = 2 x 0.82 moles

n = 1.64 moles.

Moles of Copper are 1.64.

So, the mass of Cu reacted will be

1 mole Cu = 63.55 grams

1.64 moles Cu = 1.64 x 63.55 grams

1.64 moles of Cu = 105.45 grams.

To produce 89.5 grams of silver, 105.45 grams of Copper would have reacted.

To know more about Mole Concept, visit,

https://brainly.com/question/16488605

#SPJ9

Answer:

I think this would be iron

Explanation:

Answer: D. False, it should read, "A theory and a law are already both supported by evidence and are equal, but they have different functions."

Explanation:

A  "Theory" and  a'' Law" in scientific method are already both supported by evidence but they have different function,

The function of  " Theory" in scientific method is to give an explanation to the observations and findings gathered during the process. It can be modified, improved or even rejected as more information is being gathered.

While a '' Law '' tends to describe an observed event in nature that is true whenever it is put to test. It does not explain why the occurence or event is true.