Which of the following is the most electronegative element? a. He
b. I
c. N
d. O
e. C

Answers

Answer 1

Answer: none of these; the most electronegative element is fluorine because an atom of fluorine needs an additional electron to join it's outer membrane, so the atom can achieve stability.

a flourine atom on its own is always a negative ion.

Related Questions

Water is moving across a membrane from solution a into solutionb. What can be inferred? Solution a must be pure water. Solution a must have a lower solute concentration than solutionb. Solution a must have a higher solute concentration than solutionb. Solution a and solution b must have the same concentration of solutes. Solution b must be pure water.
What are superconductors?a. Materials that need high heat to transfer energy c. Materials that only transfer thermal energy b. Materials that transfer energy with no resistance d. Materials that convert thermal energy into potential energy User: ______ is/are usually the best conductor/s. a. Metals c. Air b. Water d. Minerals
How does the rule of zero charge help you predict the formula of an ionic compound?
Substances with a higher temperaturea. have less thermal energy. b. have more molecular disorder. c. become more orderly if heated more. d. will move thermal energy to a hotter substance.
What is the volume of 1x10^4 moles of fluorine gas at stp?

student has calibrated his/her calorimeter and finds the heat capacity to be 14.2 J/°C. S/he then determines the molar heat capacity of aluminum. The data are: 25.5 g Al at 100.0°C are put into the calorimeter, which contains 99.0 g H2O at 18.6°C. The final temperature comes to 22.7°C. Calculate the heat capacity of Al in J/mol·°C.

Answers

Answer:

24.03 J/mol.ºC

Explanation:

For a calorimeter, the heat lost must be equal to the heat gained from water plus the heat gained from calorimeter, which has the same initial temperature as the water.

-Qal = Qw + Qc (minus signal represents that the heat is lost)

-mal*Cal*ΔTal = mw*Cw*ΔTw + Cc*ΔTc

Where m is the mass, C is the specific heat, ΔT is the temperature variation, al is from aluminum. w from water and c from the calorimeter. Cw = 4.186 J/gºC

-25.5*Cal*(22.7 - 100) = 99.0*4.186*(22.7 - 18.6) + 14.2*(22.7 - 18.6)

1971.15Cal = 1699.10 + 58.22

1971.15Cal = 1757.32

Cal = 0.89 J/g.ºC

The molar mass of Al is 27 g/mol

Cal = 0.89 J/g.ºC * 27 g/mol

Cal = 24.03 J/mol.ºC

A substance that is present in a reaction but not used up in the reaction is called a _____.

Answers

They are called spectator ions.

What is the product when magnesium reacts with nitrogen? Mg(s) + N2(g) →

Answers

magnesium nitride would be the result of this reaction

A typical neon light contains neon gas mixed with argon gas. If the total pressure of the mixture is 1.63 atm and the partial pressure of the neon is 0.71
atm. What is the partial pressure (atm) of argon?

Answers

the partial pressure of argon is:

1.63-0.71= 0.92 atm

1.63 atm - 0.71 atm = 0.92 atm

Endorphins are generated in the body during exercise, which leads to better emotional health. Please select the best answer from the choices provided.a. True
b. False

Answers

Answer: Yes the statement is true.

Explanation: Endorphins are chemicals produced by the human bodies to relieve stress and pain.

They are produced mainly by brain and help to transmit electrical signals within nervous system, thus are called as neurotransmitters.

They are also called as "feel good chemicals" as they can act as pain relievers and happiness booster and thus lead to better emotional health.

Endorphins are generated in the body during exercise, which leads to better emotional health. This statement is TRUE.

Further explanation

Endorphins are chemicals produced by the body to relieve stress and pain. This chemical works similarly to a class of drugs called opioid. But because endorphins release naturally by the body it is a safer way to relieve stress and pain.

Exercise boosted mood and powerful depression fighter for several reasons. Through exercise, you are not only gain your physical fitness but it also gives you an enormous sense of well being. You feel more energetic, positive, sleep well and have better memory. Exercise can also serve as a distraction from negative thoughts and activities that feed depression.

Regular exercise is important to maintain a healthy body and mind. The recommended amount and intensity of physical activity varies according to ages and health condition. For an adult, the recommended time is 150 minutes per week for a moderate-intensity activity or 75 minutes per week for vigorous-intensity activity, or a combination of these two activities. You can break this into 25 minutes a day for 3 days a week.

Learn more

Aerobic exercise and endorphins brainly.com/question/4349107

Endorphins brainly.com/question/890846

Regular exercise brainly.com/question/3122325

Keywords: endorphins, regular exercises, stress, and anxiety reliever

Halothane is an alkyl halide used as an inhalational general anesthetic. Which of the following could be used to reduce an alkyl halide to an alkane? Please select the correct option: LiAlH4 Zn, H+ Mg in anhydrous ether, then water All of the above