WILL GIVE BRAINLIEST!
__ gain electrons in the formation of ionic bonds because they have such high ionization energies indicating a strong attraction between the electrons and the nucleus.

A- metals
B- nonmetals

no it cannot I hope I helped

Answer:

Can not

Explanation:

Because both are salts of sodium and hydroxide

Answer:

electrolysis is the process by which electric current is passed through a substance to effect a chemical change.

Answer:

The production of a chemical reaction by passing an electric current through an electrolyte is called electrolysis. We know that an electrolyte contains ions, which are charged. The positively charged ions are called cations, because they are attracted to the cathode, and the negatively charged ones are called anions because they are attracted to the anode. We know that unlike charges attract and like charges repel. Cations, being positively charged, get attracted to the negatively charged cathode and move toward it. Anions, being negatively charged, get attracted to the positively charged anode and move toward it. This explains how ions move in an electrolytic cell, and thus ‘conduct’ an electric current. A chemical reaction takes place at the anode and the cathode. This can be observed as the formation of bubbles (due to the production of gases) or deposition of metal on the electrodes or a change in the color of the electrolyte. The reaction varies depending on the metals used for the electrodes and the electrolyte chosen. Electrolysis of a solution of sodium chloride (NaCl) produces hydrogen gas (H2), chlorine gas (Cl2), and sodium hydroxide (NaOFI).

The pictures of electrolysis examples are shown below:

Explanation:

ionic compounds eg sodium chloride

covalent compounds e.gmethane

a) The smoke obscuration meter provides a measurement of smoke obscuration, which is defined as the reduction of transmitted light caused by smoke particles in the air.

The corresponding optical density can be calculated using the formula: optical density = -log(T), where T is the transmittance. In this case, the transmittance is 1 - 0.4 = 0.6. Therefore, the optical density is -log(0.6) = 0.221.

The extinction coefficient is a measure of how strongly the smoke particles scatter or absorb light, and can be calculated using the formula: extinction coefficient = optical density / distance. In this case, the distance between the light source and the detector is 4.0 m. Therefore, the extinction coefficient is 0.221 / 4.0 = 0.055.

b) The visibility of a light emitting sign subjected to such an environment can be calculated using the formula: visibility = e^(-kL), where k is the extinction coefficient and L is the path length of the light through the smoke.

In this case, we do not know the path length of the light through the smoke, so we cannot calculate the visibility.

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                                                         Answer

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According to Toppr, \(2\cdot2=4g\) of hydrogen reacts with  \(1\cdot32=32g\) of oxygen to form \(2\cdot18=36g\) of water. Hence, \(44=1g\) of hydrogen reacts with \(432=8g\) of oxygen to form \(436 = 9g\) of water. \(9\) grams of water can be produced when \(8\)g of hydrogen reacts with

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Hope this helps! <3

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A redox reaction is a chemical reaction in which one or more of the reacting species undergoes oxidation and one or more undergoes reduction. An oxidizing agent is an element or compound that oxidizes another substance, while a reducing agent is an element or compound that reduces another substance.

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(e) 5, 4,- 5, 1/2 is the acceptable set of quantum numbers for an electron in an atom.

In chemistry, electrons in atoms are described by four sets of quantum numbers, and they are as follows:

The principal quantum number, or n, typically has integer values ranging from 1 to infinity. From 0 through n - 1, the orbital quantum number can have several values. In contrast to the spin quantum number, the magnetic quantum number can take on values ranging from -l to +l.

Putting this to the back of our thoughts, we can clearly see that only the set of quantum numbers 5, 4,- 5, 1/2 meets the requirements outlined above.

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The energy of a rogue wave with an amplitude of 15 meters is 2,207,250 joules.

To do this, we need to use the following terms: potential energy, kinetic energy, and wave energy. Here's the step-by-step explanation:

1. Determine the amplitude (A) of the rogue wave: In this case, the amplitude is given as 15 meters.

2. Calculate the potential energy (PE):

The potential energy of a wave is given by the formula PE = (1/2)ρgA², where ρ is the density of water (approximately 1000 kg/m³), g is the acceleration due to gravity (9.81 m/s²), and A is the amplitude. Plugging in the values, we get PE = (1/2) * 1000 * 9.81 * (15)² = 1,103,625 J (joules).

3. Calculate the kinetic energy (KE): The kinetic energy of a wave is equal to its potential energy, so KE = 1,103,625 J.

4. Calculate the total wave energy (E): The total energy of a rogue wave is the sum of its potential and kinetic energy, E = PE + KE = 1,103,625 + 1,103,625 = 2,207,250 J.

So, the energy of a rogue wave with an amplitude of 15 meters is 2,207,250 joules.

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To determine the amount of water and methane needed, we can set up a system of equations based on the desired composition of the mixture. you should use 36 gallons of water and 54 gallons of methane to obtain a mixture of 90 gallons with a methane concentration of 60%.

Let's assume x represents the number of gallons of water and y represents the number of gallons of methane. We have the following information: The total volume of the mixture is 90 gallons: x + y = 90. The mixture should be 60% methane: (y / (x + y)) * 100 = 60. Simplifying the second equation: y / (x + y) = 0.6. Now we can solve the system of equations: From equation 1, we can express x in terms of y: x = 90 - y. Substituting this into equation 2: y / ((90 - y) + y) = 0.6. Simplifying further: y / 90 = 0.6. Solving for y: y = 0.6 * 90. y = 54. Now we can find x using equation 1: x = 90 - y. x = 90 - 54. x = 36. Therefore, you should use 36 gallons of water and 54 gallons of methane to obtain a mixture of 90 gallons with a methane concentration of 60%.

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The composition of each compound as the mass percent of its elements is as follows:

Concentration is expressed as mass percent. Additionally, the ingredients in a particular mixture are described. Solution composition can be understood in terms of mass percent. It indicates the mass of solute present in a solution of a given mass. The amount of solute is expressed in mass or moles.

Mass Percent = (Component Mass ÷ Total Mass) x 100% or

(mass of solute ÷ mass of solution) x 100%

a. Sucrose (C₁₂H₂₂O₁₁) with molecular mass of 342.296 u composed of:

Carbon: (12 x 12.01) / 342.296 = 42.18%

Hydrogen: (22 x 1.01) / 342.296 = 6.44%

Oxygen: (11 x 16) / 342.296 = 51.38%

b. Aluminum sulfate (Al₂(SO₄)₃) with molecular mass of 342.14 u is composed of:

Aluminum: (2 x 26.98) / 342.14 = 3.99%

Sulfur: (3 x 32.06) / 342.14 = 4.57%

Oxygen: (18 x 16) / 342.14 = 87.44%

c. Magnetite (Fe₃O₄) with molecular mass of 231.534 u is composed of:

Iron: (3 x 55.85) / 231.534 = 71.83%

Oxygen: (4 x 16) / 231.534 = 28.17%

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Answer:

.

Explanation:

Some of the glucose required for cellular respiration in humans is obtained by external food source which are rich in carbohydrates.

Cellular respiration is the process in which cells combines the oxygen with the foodstuff molecules, and converting the chemical energy into life sustaining activities as energy.

In the human body, we get the glucose for the cellular respiration from the external food source which are riched in carbohydrates, starch, etc. After converting the chemical energy to glucose then oxygen is absorbed in the lungs and circulate the blood through out the body by red blood cells.

Hence, we get glucose from food source.

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The nonrenewable energy source among the options provided is fossil fuel energy, option C is correct.

Fossil fuels, such as coal, oil, and natural gas, are derived from ancient organic matter that has been buried and transformed over millions of years. These resources are finite and cannot be replenished within a human lifespan. Additionally, their combustion releases carbon dioxide and other greenhouse gases, contributing to climate change and air pollution.

Solar energy, wind energy, tidal energy, and geothermal energy are renewable sources of energy. They rely on naturally replenishing resources like sunlight, wind, tides, and heat from the Earth's core, making them sustainable and environmentally friendly alternatives to fossil fuels, option C is correct.

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The complete question is:

Which of the following energy sources is considered nonrenewable?

A. solar energy

B. wind energy

C. fossil fuel energy

D. tidal energy

E. geothermal energy

Answer:

180 pm

Explanation:

Atomic radius can be defined as a measure of the size (distance) of the atom of a chemical element such as hydrogen, oxygen, carbon, nitrogen etc, typically from the nucleus to the valence electrons. The atomic radius of a chemical element decreases across the periodic table, typically from alkali metals (group one elements such as hydrogen, lithium and sodium) to noble gases (group eight elements such as argon, helium and neon) i.e from the left to the right. Also, the atomic radius of a chemical element increases down each group of the periodic table, typically from top to bottom (column).

Hence, the atomic radius of magnesium, strontium and calcium is 150 pm, 200 pm and 180 pm respectively.

Additionally, the unit of measurement of the atomic radius of chemical elements is picometers (1 pm = 10 - 12 m).

Answer:

An atom containing 11 electrons

Explanation:

Metal atoms form ions by a loss of electrons whereas non-metal atoms form ions by the gain of electrons.

The group 1 elements or alkali metals form lose their one valence shell electrons when forming ions; Group 2 metals lose two while Group 3 lose three. On the other hand, non-metal atoms found in Group 5, 6, and 7 forms ions by gaining one, two and three electrons respectively.

Using the electronic configuration of atoms, their groups in the Periodic Table can be determined.

An atom containing 6 electrons has the configuration 2,4 and thus belongs to Group 4.

An atom with 2 electrons belongs to Group 2

An atom with 11 electrons has the configuration 2,8,1 and thus belongs to Group 1

An atom with 10 electrons has the configuration 2,8 and thus belongs to Group 8

An atom with 8 electrons has the configuration 2,6 and thus belongs to Group 6.

From the above, it can be seen that an atom containing 11 electrons belongs to Group 1 and will lose an electron to form an ion.

The refrigerator would use 180 kilowatt-hours (kWh) of electric energy over the course of 30 days, assuming it runs for 12 hours each day.

To calculate the kilowatt-hours (kWh) of electric energy used by the refrigerator in 30 days, we need to multiply the power rating by the total running time.

Given:

Power rating of the refrigerator = 500 W

Running time per day = 12 hours

Number of days = 30

First, we need to convert the power rating from watts to kilowatts:

Power rating = 500 W / 1000 = 0.5 kW

Next, we calculate the total energy used in kilowatt-hours (kWh) over the 30-day period:

Energy used = Power rating × Running time × Number of days

Energy used = 0.5 kW × 12 hours/day × 30 days

Energy used = 180 kWh

Therefore, the refrigerator would use 180 kilowatt-hours (kWh) of electric energy over the course of 30 days, assuming it runs for 12 hours each day.

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Answer:

Option C - 1 mole

a) no of moles of solute = 4.1×0.05

moles = O.205

so the mass of of sodium chloride present is 0.205×58.44

Mass of NaCl = 11.98 g

b) no of moles of solute = 1.8×0.01= 0.018

so the mass of of sodium chloride present is 0.018×58.44

Mass of NaCl = 1.05g

C) number of moles of solute is 1 mole

mass of solute is =58.44g

d) mass =9.35g

So the conclusion is that 1 mole is the correct answer!!!!

Answer:

B. changes in energy during the reaction

Explanation:

y-axis measures "energy" and x-axis measures "reaction progress". Those units fit well with (B) and not so well with concentration and time (A), phases and temperature (C), or reaction rate and time (D).

Answer:

b. changes in energy during reaction

Explanation:

graph

Answer:

The term niche, when used in the science of ecological biology, is used to define an organism's role in an ecosystem. Not only does its niche include the environment that a given organism lives in, but it also includes the organism's "job" in that environment.

Answer:

a niche is an area within an ecosystem in which a particular group of organisms live in.

The condensed electron configurations for:

\(CO_2+, N_3-, and Ca_2+:\\CO_2+: [Ar] 3s^2 3p^2\\N_3-: [Ar] 3s^2 3p^5\\Ca_2+: [Ar] 4s^2 3d^1 4f_{14} 5s^2\)

The condensed electron configuration is a simplified representation of the electron configuration of an atom, which lists the atomic number, shell number, and the number of electrons in each shell. In this case, the atomic number are 6, 14, and 20, respectively, and the electron configuration is listed in order of increasing energy level.  

The condensed electron configuration, on the other hand, provides a more concise representation of the electron configuration, and is often used to identify the number of electrons in each shell of an atom. This can be useful in understanding the electronic structure of atoms and how it relates to their chemical properties.  

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Answer:

5.01 liter

Explanation:

so thats the answer of volume of a balloon

In the subgranular zone

Which is the best reason to carry out scientific research on climate change?

A. To help people prepare for the future

C. To elect better-informed politicians

D. To win political debates

Answer:

to create jobs for scientists

The term used to denote the concentration of electrolytes in a given volume is "molarity".

Molarity-

Molarity is the number of moles of solute dissolved in one liter of the solution. Molarity is the most widely used concentration metric in chemistry, and it is frequently denoted by "M." It denotes the amount of solute in moles per liter of solution.

A solution's molarity can be calculated using the following formula:

Molarity = moles of solute / liters of solution

Molarity is often used to express the concentration of a solution's electrolytes because electrolytes break into ions when dissolved in a solvent, allowing for electrical conductivity.

Molarity can be used in other applications, such as stoichiometry, which involves determining how much of one compound is required to react completely with another.

Molarity is a useful tool for solving problems that involve chemical reactions since the number of moles of a substance is frequently used to establish reaction ratios, limit reactants, and determine the theoretical yield.

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Answer:

negitive 5 or -5

Explanation

usally 12-7 = 5 but 7 is first so it you turn 5 to negitive 5

or -5

c i think

Explanation:

if it's not look it up

We need thermodynamic information, in particular the standard Gibbs free energy change (G°) at each temperature, to determine the equilibrium constant, Kp, for a given process at two different temperatures (298 K and 1300 K).

However, you can use the following equation if you have specific Gibbs free energy change (G°) values ​​for the two temperatures:

ΔG° = -RT ln(Kp)

where

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

T is the temperature in Kelvin.

By rearranging the equation, you can solve for Kp:

Kp = e^(-ΔG° / RT)

You can determine Kp for the reaction at 298 K and 1300 K, substituting the values ​​of G° and the associated temperatures into the equation. Be sure to complete computations using compatible units (such as J and K).

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In the first  two  chemical equations, double displacement reactions occur as the ions are exchanged between the 2 reactants while in last one no reaction takes place as both ammonium and potassium salts are soluble.

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

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